4. What angle measures larger than 90 degrees, but less than 180 degrees? A reflx B straight C obtuse D right
Answers
Answer:
C obtuse
Step-by-step explanation:
An Obtuse angle measures more than 90° but less than 180°. A Straight angle or a half turn is always 180 °. Reflex is the next largest measuring more than 180° but less than 360°.
Related Questions
classes, c, she will take this year. For each class that she takes, she expects
to spend 24 hours
Kaylee wants to do well in her classes, so she is budgeting her time carefully to decide the number of
each week working on homework. She expects to spend an additional 64 each week completing the
assigned reading for all of her classes together. If Kaylee has 19 hours available each week to
complete homework and reading for her classes, which equation best models this situation.
A) 21 2c - 6/2 = 19
B) 25c+63 = 19
C) 6£c - 24 = 19
D) 61c+ 24 = 19
Answers
The equation that shows the number of classes she can take is given by (2.5 + 6.5)c = 19
Equation
An equation is an expression that shows the relationship between two or more numbers and variables.
Let c represent the number of classes that Kaylee will take this year.
For each class that she takes, she expects to spend 2 1/2 (2.5) hours each week working on homework. She expects to spend an additional 6 1/2 (6.5) hours each week completing the assigned reading for all her classes together
Hence:
(2.5 + 6.5)c = 19
The equation that shows the number of classes she can take is given by (2.5 + 6.5)c = 19
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Zack is on his school's color guard and is practicing throwing and catching his flag. He throws the flag into the air from a height of 5 feet at a velocity of 30 feet per second. After the flag starts to come back down, he catches it 7 feet above the ground.
To the nearest tenth of a second, how long is the flag in the air before Zack catches it?
Hint: Use the formula h=16t2+vt+s.
Answers
The Nearest tenth of a second, the flag is in the air for approximately 0.1 seconds before Zack catches it.
To determine the time the flag is in the air before Zack catches it, we can use the kinematic equation for vertical motion:
h = 16t^2 + vt + s
Where:
h is the height of the flag,
t is the time in seconds,
v is the initial vertical velocity of the flag,
s is the initial height of the flag.
In this case, the flag is thrown into the air from a height of 5 feet (s = 5) with an initial vertical velocity of 30 feet per second (v = 30). Zack catches it at a height of 7 feet (h = 7).
We can rewrite the equation as:
7 = 16t^2 + 30t + 5
To find the time (t) when the flag is at a height of 7 feet, we can rearrange the equation and solve for t. However, since this is a quadratic equation, we can also use the quadratic formula.
The quadratic equation in this case is:
16t^2 + 30t + 5 - 7 = 0
16t^2 + 30t - 2 = 0
Now, we can use the quadratic formula:
t = (-b ± √(b^2 - 4ac)) / (2a)
Applying the values from the quadratic equation, we have:
t = (-30 ± √(30^2 - 4 * 16 * (-2))) / (2 * 16)
Simplifying further:
t = (-30 ± √(900 + 128)) / 32
t = (-30 ± √1028) / 32
Using a calculator, we find two solutions:
t ≈ -1.08 seconds or t ≈ 0.06 seconds
Since time cannot be negative in this context, we discard the negative solution.
Therefore, to the nearest tenth of a second, the flag is in the air for approximately 0.1 seconds before Zack catches it.
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Sarah is buying some school clothes.
She found a sweater she likes that costs $18.85 and some t-shirts that are on sale for $4 each.
She got several t shirts of different colors and spent a total of $54.85.
Which equation describes the situation where x is the number of t shirts?
Answers
When adding 32.6 to a certain number, the sum is 36.14, as seen below. What number should go in the box to complete the addition problem? 3
Answers
The unknown number which is added to the number 32.6 will be 3.54.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that when adding 32.6 to a certain number, the sum is 36.14. The unknown number will be calculated as,
32.6 + N = 36.14
N = 36.14 - 32.6
N = 3.54
Therefore, the unknown number which is added to the number 32.6 will be 3.54.
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Please answer correctly I am offering brainalist + 10 points for correct answer (:
Answers
Answer:
B. Vertical Angles
Xavier saved money to purchase a bike that originally cost $250, not including tax. The store discounted the bike by 20%. What is the discounted price he will pay for the bike, not including tax?
Question 1 options:
$50.00
$300.00
$270.00
$200.00
I REALLY NEED HELPPP
Answers
Answer:
Step-by-step explanation:
B
there you go
sorry
if ac =14 find the value of x then find ab and bc
Answers
Answer:
If B is between A and C, AB = x, BC = 2x + 2, and AC = 14, find the value of x. Then find AB and BC.
Step-by-step explanation:
AB=x
BC = 2x + 2BC=2x+2
AC =14AC=14
Required
Determine x, AB and BC.
Since B is between A and C;
AB + BC = ACAB+BC=AC
Substitute x for AB; 2x + 2 for BC and 14 for AC
x + 2x + 2 = 14x+2x+2=14
3x + 2 = 143x+2=14
Collect Like Terms
3x = 14 - 23x=14−2
3x = 123x=12 '
x = \frac{12}{3}x=
3
12
x = 4x=4
Substitute 4 for x in
AB = xAB=x
BC = 2x + 2BC=2x+2
AB = 4AB=4
BC = 2(4) + 2BC=2(4)+2
BC = 8 + 2BC=8+2
BC = 10BC=10
how can you use pythagora's theorem to solve problems involving right-angled triangles
Answers
Using Pythagorean theorem, the length of the ladder is 10ft
What is Pythagorean Theorem?In mathematical terms, if y and z are the lengths of the two shorter sides (also known as the legs) of a right triangle, and x is the length of the hypotenuse, the Pythagorean theorem can be expressed as:
x² = y² + z²
In the questions given, the only one we can use Pythagorean theorem to solve is the one with ladder since it's forms a right-angle triangle.
To calculate the length of the ladder, we can write the formula as;
x² = 8² + 6²
x² = 64 + 36
x² = 100
x = √100
x = 10
The length of the ladder is 10 feet
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Determine the turning points and distinguish between them when necessary y=x³ - 3x - 9x + 4
Answers
The turning points of the function y = x³ - 3x² - 9x + 4 are (3, -23) and (-1, 9).
To determine the turning points of the given function y = x³ - 3x² - 9x + 4, we need to find the critical points where the derivative of the function is equal to zero.
1. Find the derivative of the function:
y' = 3x² - 6x - 9
2. Set the derivative equal to zero and solve for x:
3x² - 6x - 9 = 0
3. Factorize the quadratic equation:
3(x² - 2x - 3) = 0
4. Solve the quadratic equation by factoring or using the quadratic formula:
(x - 3)(x + 1) = 0
This gives us two possible values for x: x = 3 and x = -1.
5. Substitute these critical points back into the original function to find the corresponding y-values:
For x = 3:
y = (3)³ - 3(3)² - 9(3) + 4
= 27 - 27 - 27 + 4
= -23
For x = -1:
y = (-1)³ - 3(-1)² - 9(-1) + 4
= -1 - 3 + 9 + 4
= 9
6. Therefore, the turning points are (3, -23) and (-1, 9).
Note: It appears that there was a typo in the original equation, where the term "-9x" should have been "-3x²". The above solution assumes the corrected equation.
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The question is asked in the attached file,. Kindly someone answer it in the best way.
Answers
According to the Empirical Rule, 99.7% of the measures fall within 3 standard deviations of the mean in the normal distribution.
What does the Empirical Rule state?The Empirical Rule states that, for a normally distributed random variable, the symmetric distribution of scores is presented as follows:
The percentage of scores within one standard deviation of the mean of the distribution is of approximately 68%.The percentage of scores within two standard deviations of the mean of the distribution is of approximately 95%.The percentage of scores within three standard deviations of the mean off the distribution is of approximately 99.7%.More can be learned about the Empirical Rule at https://brainly.com/question/10093236
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Which of the following represents the shaded area as a fraction, a decimal, and a percent of the whole?
Answers
Answer:
3
Step-by-step explanation:
What is (3x7 + 7x5 - 3x² + 7) + (x7 - 3x5 + 2x³ + 3)?
Answers
Answer:
Hope this helps ;) don't forget to rate this answer !
Step-by-step explanation:
To solve this problem, we need to perform the indicated operations in order. The first step is to simplify the expressions inside the parentheses.
(3x7 + 7x5 - 3x² + 7) + (x7 - 3x5 + 2x³ + 3)
= (21x + 35x - 3x² + 7) + (7x - 15x + 2x³ + 3)
The next step is to combine like terms within each parentheses:
= (21x + 35x - 3x² + 7) + (7x - 15x + 2x³ + 3)
= (56x - 3x² + 7) + (-8x + 2x³ + 3)
Finally, we can add the two expressions:
= (56x - 3x² + 7) + (-8x + 2x³ + 3)
= 56x - 3x² - 8x + 2x³ + 3 + 7
= 56x - 3x² - 8x + 2x³ + 10
The final answer is 56x - 3x² - 8x + 2x³ + 10.
choose yes or no to tell whether each of the following describes a convenience sampling method
Answers
In short, we have these answers in this exact order: No, No, Yes, Yes.
3x-2y=12
6x-4y-24
OIt has infinitely many solutions.
OIt has no solution.
O It has one solution (2, -3).
O It has one solution (4, 0).
Answers
(WORK SHOWN BELOW)
Write an
i explicit formula for an, the nth term of the sequence 200, 40, 8, ....
Answers
Answer:
\(T_n = 200 * (\frac{1}{5})^{n-1\)
Step-by-step explanation:
Given
\(Sequence: 200,40,8\)
Required
The nth term
The given sequence is a geometric sequence.
So, first we identify the first term
\(a = 200\)
Calculate common ration
\(r = \frac{40}{200}\) or \(r = \frac{8}{40}\)
\(r = \frac{1}{5}\)
So, the nth term is:
\(T_n = ar^{n-1\)
\(T_n = 200 * (\frac{1}{5})^{n-1\)
Simplify. 5.1u + 2.5u
Answers
Just add the numbers together and put a u on the end but if it’s multiplication multiply the number and put u2 or how many u there are
Suppose f(x) =8^3x and g(x) =8^4x which of these function operations are correct select all that apply
Answers
Suppose \(f(x) =8^{3x\) and \(g(x) =8^{4x\), function operations that are correct include the following:
A. (f + g)(x) = \(8^{3x} + 8^{4x}\)
B. (f × g)(x) = \(8^{7x}\)
C. (f - g)(x) = \(8^{3x} - 8^{4x}\)
What is an exponent?In Mathematics, an exponent is a mathematical operation that is typically used in conjunction with an algebraic expression in order to raise a quantity to the power of another.
This ultimately implies that, an exponent is represented by the following mathematical expression;
bⁿ
Where:
the variables b and n are numerical values (numbers) or an algebraic expression.n is referred to as a superscript or power.By applying the division and multiplication law of exponents for powers of the same base to the functions, we have the following:
(f × g)(x) = \(8^{3x+ 4x}=8^{7x}\)
(f ÷ g)(x) = \(8^{3x- 4x}=8^{-x}\)
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Find the mean for the scores: 3,850; 5,500; 8,540; 4,300; 5,360. The mean for the scores is
Answers
Answer:
5,510
Explanation:
The mean can be calculated as the sum of all the values divided by the number of values, so in this case, the mean is equal to
\(\begin{gathered} \operatorname{mean}=\frac{3850+5500+8540+4300+5360}{5} \\ \operatorname{mean}=\frac{27550}{5} \\ \operatorname{mean}=5510 \end{gathered}\)Therefore, the mean for the score is 5510
Renaldo catches the bus at 4:00 PM to ride 3.2 miles from his house to the dentist's office. He arrives at 4:30 PM, for a one-hour appointment. Then he rides a bus traveling at the same rate of speed for 4.8 miles to the soccer field. Is he on time for his 6:30 PM soccer practice? Explain.
Answers
Using the relation between velocity, distance and time, it is found that his velocity is greater than 4.8 miles per hour, hence he is on time for his 6:30 PM soccer practice.
What is the relation between velocity, distance and time?Velocity is distance divided by time, that is:
v = d/t.
To go to the dentist, he rode 3.2 miles in 0.5 hours, hence the velocity is:
v = 3.2/0.5 = 6.4 miles per hour.
He leaves at 5:30 PM for the soccer practice, which is at a distance of 4.8 miles. The distance is less than his velocity, hence he is on time for his 6:30 PM soccer practice.
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Professors often attempt to determine if the submissions by the students are genuine or copied off the web sources. The program that performs this task is only 95 % accurate in correctly identifying a genuine submission and 80% accurate in correctly identifying copies. Based on the past statistics, 15% of the student turned in copied work. If a work is identified as a copy by the program, what is the probability that it is indeed a sample of copied work.
Answers
Answer:
0.7385 = 73.85% probability that it is indeed a sample of copied work.
Step-by-step explanation:
Conditional Probability
We use the conditional probability formula to solve this question. It is
\(P(B|A) = \frac{P(A \cap B)}{P(A)}\)
In which
P(B|A) is the probability of event B happening, given that A happened.
\(P(A \cap B)\) is the probability of both A and B happening.
P(A) is the probability of A happening.
In this question:
Event A: Identified as a copy
Event B: Is a copy
Probability of being identified as a copy:
80% of 15%(copy)
100 - 95 = 5% of 100 - 15 = 85%(not a copy). So
\(P(A) = 0.8*0.15 + 0.05*0.85 = 0.1625\)
Probability of being identified as a copy and being a copy.
80% of 15%. So
\(P(A \cap B) = 0.8*0.15 = 0.12\)
What is the probability that it is indeed a sample of copied work?
\(P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.12}{0.1625} = 0.7385\)
0.7385 = 73.85% probability that it is indeed a sample of copied work.
The brain volumes (cm³) of 20 brains have a mean of 1085.2 cm³ and a standard deviation of 125.6 cm³. Use the
given standard deviation and the range rule of thumb to identify the limits separating values that are significantly low or
significantly high. For such data, would a brain volume of 1386.4 cm³ be significantly high?
Answers
If the brain volumes (cm³) of 20 brains have a mean of 1085.2 cm³ and a standard deviation of 125.6 cm³. For such data: it is significantly low for a brain because 1386.4 cm³ is less than the upper limit.
How to find the lower and upper limits?Mean = 1085.2 cm³
Standard deviation = 125.6 cm³
Hence,
Lower limit = Mean - 2 x Standard deviation
Lower limit =1085.2 - 2 x 125.6
Lower limit =1161.2 - 251.2
Lower limit =910
Upper Limit = Mean + 2 x Standard deviation
Upper Limit = 1161.2 + 2 x 125.6
Upper Limit =1161.2 +251.2
Upper Limit =1412.4
The limit of values is from 910 to 1412.4.
A value below 910 will be is considered low and a value above 1412.4 will be considered high
Therefore 1386.4 cm³ is less than the upper limit. Thus it is significantly low for a brain.
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A survey of 518 adults aged 18-24 year olds was conducted in which they were asked what they did last Friday night. It found:
175 watched TV
181 hung out with friends
39 watched TV and ate pizza, but did not hang out with friends
26 watched TV and hung out with friends, but did not eat pizza
39 hung out with friends and ate pizza, but did not watch TV
42 watched TV, hung out with friends, and ate pizza
66 did not do any of these three activities
How may 18-24 year olds (of these three activities) only ate pizza last Friday night?
Answers
There are 284 adults who ate pizza.
What are sets?The way that sets are represented by a person is always the same: as a group of clearly defined objects or elements. A capital letter designates a set. The cardinal number of a set is the number of elements in the finite set.
Given A survey of 518 adults,
let T denote TV, H for out with friends, and P for pizza
and given, n(T ∪ H ∪ P) = 518
n(T) = 175, n(H) = 181
n(P) = to find
TP = 39, TH = 26
FP = 39, n(TPH) = 42
n(TP) = 39 + 42 = 81
n(TH) = 26 + 42 = 68
n(HP) = 39 + 42 = 81
using the formula of triple intersection,
n(T U H U P) = n(T) + n(H) + n(P) - n(TH) - n(TP) - n(HP) + n(TPH).
518 - 66 = 175 + 181 + n(P) - 81 - 68 - 81 + 42
n(P) = 452 - 168
n(P) = 284
Hence 284 people ate only pizza.
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Solve for x in the following 4/2.6=5/x
Answers
The value of X is 3.25
Look at the attached picture
Hope it will help you
Good luck on your assignment
2x +1 < 5 what would be the inequality for this ?
Answers
Answer: x < 2
Step-by-step explanation:
First subtract 1 on both sides
2x < 4
Then divide both sides by 2
x < 2
Hey there!
2x + 1 < 5
SUBTRACT 1 to BOTH SIDES
2x + 1 - 1 < 5 - 1
SIMPLIFY IT!
2x < 5 - 1
2x < 4
DIVIDE 2 to BOTH SIDES
2x/2 < 4/2
SIMPLIFY IT!
x < 4/2
x < 2
Therefore, your answer is: x < 2
(The graph is down below)
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
2. Which of the following statements is true?
-32 = -9 and (-3)2 = 9
-32 = 9 = (-3)2
-32 = -9 = (-3)
Pls need done in 1 hour
Answers
Answer:
by expressing it you see that all lies negatively-32=-9=(-3)
A new cylindrical can with a diameter of 4cm is being designed by a local company. The surface area of the can is 140 square centimeters. What is the height of the can? Estimate using 3.14 for pi and round to the nearest hundredth. Apply the formula for the surface area of a cylinder SA=2B+Ph
Answers
The height of the can of cylinder shape is 9.14 cm.
What is a cylinder?
In mathematics, a cylinder is a three-dimensional solid that maintains two parallel bases separated by a curved surface at a specific distance. These bases frequently have a circular shape (like a circle), and an axis connects their respective centres.
We are given the diameter as 4 cm.
So, the radius is 2cm.
Also, it is given that the surface area of the can is 140 square centimeters.
So, using the surface area of cylinder, we get
⇒Area = 2πr (h + r)
⇒140 = 2π * 2 (h + 2)
⇒140 = 4π (h + 2)
⇒140 = 4 * 3.14 * (h + 2)
⇒140 = 12.56 * (h + 2)
⇒11.14 = h + 2
⇒h = 9.14
Hence, the height of the can of cylinder shape is 9.14 cm.
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For the graph, name the parent function and write an equation of the graph.
Answers
This is a transformation of the parent square root function, and it can be written as:
f(x) = √(-x + 4) - 2
Which is the parent function graphed?
It is ratter easy to identify the shape of the general square root function:
f(x) = √x
The only difference is that now it opens to the left, and it starts at the point (4, -2)
Then:
The sign of the x must be negative.
And with the known vertex we can write the equation:
f(x) = √(-x + 4) - 2
That is the graphed function.
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please help I will give brainliest
Answers
Answer:
D
Step-by-step explanation:
is the correct answer.....
Two 8-foot-long 2 × 4s are cut into sections of equal length. Board A is cut into 9 equal sections, of which 5 are used. Therefore, of the board has been used; of it remains. Board B is cut into 7 equal sections, of which 4 are used. That means of the board has been used; of it remains. Which has the longest remaining section, Board A or Board B?
Answers
Answer:
Board A
Step-by-step explanation:
Since the boards were split into equal sections, we can think of them as fractions.
\(\frac{5}{9}\) of Board A was used, meaning \(\frac{4}{9}\) of Board A remains.
\(\frac{4}{7}\) of Board B was used, meaning \(\frac{3}{7}\) of Board B remains.
To give these fractions common denominators, we multiply the numerator and denominator by the opposite denominator.
4/9 * 7/7 = 28/63
3/7 * 9/9 = 27/63
28/63 is greater than 27/63. This means that Board A has the longest remaining section.
Board A has the longest portion remaining section.
What is the Ratio?A ratio is defined as a relationship between two quantities, it is expressed as one divided by the other
Two 8-foot-long 2 × 4s are cut into sections of equal length. Board A is cut into 9 equal sections, of which 5 are used.
To determine the longest remaining section, Board A or Board B
The boards can be considered as ratios since they have been divided into equal portions.
5/9 of Board A was used, while Board A's significance is still unchanged.
4/7 of Board B was used, while Board B's significance is still unchanged.
We multiply the numerator and denominator by the opposing denominator to give these ratios common denominators.
⇒ 4/9 * 7/7 = 28/63
⇒ 3/7 * 9/9 = 27/63
So 27/63 is greater than 28/63.
This indicates that Board A has the longest portion remaining section.
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decorative vase is on sale from $80 to $50. What is the
percent change of the price of the vase. Be sure to indicate
if it was a decrease or increase. Show the formula you use to
solve. Round to a whole number.