Please help me here in an algebraic maze that I hardly understand, please help me, my time is running out on a math test.
Answers
Answer:
??i never did this before
Related Questions
Estimate a 15% tip on a dinner bill of $43.27 by first rounding the bill amount to the nearest ten dollars.
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Answer:
6.00$
Step-by-step explanation:
43.27 rounds down to 40.00.
15% of 40.00 is 6.00
5^3x - 5^3x-1
\( {5}^{3x} - {5}^{3x - 1} = 4\)
Answers
Answer:
x=1/3
Step-by-step explanation:
Factor out 5^3x
5^3x(1-1/5)=4
Combine the fractions
5^3x(4/5)=4
Multiply both sides by 5/4
5^3x=5
Now we have the same base of 5 so we can set the exponents equal to one another (the exponent of 5 is 1)
3x=1
X=1/3
A segment MN has endpoints M(-7.-6) and N(7,7). Find the coordinates of partition point P that divides the segment into a 5:2 ratio.
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A segment MN has endpoints M(-7.-6) and N(7,7). Find the coordinates of partition point P that divides the segment into a 5:2 ratio.
___________________________
Find the coordinates of partition point P that divides the segment into a 5:2 ratio.
5:2 means that it is divided into 7, and we do not move two positions from (7,7)
X axis
7- (-7) = 14
14/7 = 2
7-2*2 = 3
Y axis
7-(-6)= 13
13/7 =
7 - 2* (13/7) = 49/7 - 26/ 7 = 23/7 = 3 2/7
______________________________
Answer
(3, 3 2/7)
When a random sample is selected from a population, the sample mean is not expected to be exactly equal to the population mean. On average, the size of the difference between a sample mean and the population mean is predicted by
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4.024 as a mixed number
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Answer:
4 24/1000 simplified/reduced to 4 3/125
Step-by-step explanation:
The number 4 in .024 ends in the thousandths place so the mixed number will be ...
4 24/1000
4 24/1000 is simplified to 4 3/125 because we divide the numerator and denominator by 8 to get 4 3/125.
24 ÷ 8 3
4 ----- = 4 -----
1000 ÷ 8 125
Hope this helps :)
A traffic helicopter descends 153 meters to be 445 meters above the ground, as illustrated in the
diagram to the right. Write an equation to describe the situation using h as the original height of the
helicopter. What was the original height of the helicopter?
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The equation to represent the situation is written as 455 = h - 153
Data;
distance above ground = 445mdistance travelled = 153mEquation to represent the situationThe equation to represent this situation can simply be written with respect to h which is the original height.
\(445 = h - 153\)
We can further solve for h to determine the original height of the helicopter before it began descent.
The equation to represent the situation is written as 455 = h - 153
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The rate of depreciation dV/dt of a machine is inversely proportional to the square of t + 1, where V is the value of the machine t years after it was purchased. The initial value of the machine was $500,000, and its value decreased $100,000 in the first year. Estimate its value after 4 years.
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The estimated value of the machine after 4 years when the rate of depreciation dV/dt is inversely proportional to the square of t + 1 is $234,375.
Since the rate of depreciation is inversely proportional to the square of t + 1, we can write:
dV/dt = k / (t + 1)²
where k is the constant of proportionality. We can find k by using the initial value of the machine:
dV/dt = k / (t + 1)² = -100,000 / year when t = 0 (the first year)
Therefore, k = -100,000 * (1²) = -100,000.
To find the value of the machine after 4 years, we need to solve the differential equation:
dV/dt = -100,000 / (t + 1)
We can do this by separating variables and integrating:
∫dV / (V - 500,000) = ∫-100,000 dt / (t + 1)²
ln|V - 500,000| = 100,000 / (t + 1) + C
where C is the constant of integration.
We can find C by using the initial value of the machine:
ln|500,000 - 500,000| = 0 = 100,000 / (0 + 1) + C
Therefore, C = -100,000.
Substituting this value of C, we get:
ln|V - 500,000| = 100,000 / (t + 1) - 100,000
ln|V - 500,000| = -100,000 / (t + 1) + ln|e¹⁰|
ln|V - 500,000| = ln|e¹⁰ / (t + 1)²|
V - 500,000 = \(e^{10/(t + 1)²)}\)
V = \(e^{10/(t + 1)²)}\) + 500,000
Finally, we can estimate the value of the machine after 4 years by substituting t = 3:
V = \(e^{10/(3 + 1)²}\) + 500,000
V ≈ $234,375
Therefore, the correct answer is $234,375.
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Please help I’m stressing
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help noe pls i said plss
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Answer:
49/12
Step-by-step explanation:
Order of Operations:PEMDAS
P -Parentheses
E -Exponents
M -Multiplication
D -Division
A -Addition
S -Subtraction
4\(\frac{3}{5}\) = (4X5)+3/5
= \(\frac{23}{5}\)
\(\frac{23/5 +15 }{5-1/5}\)
= \(\frac{23 + 15x5}{5}\) ÷ \(\frac{5x5 -1}{5}\)
= 23+75 ÷ 25- 1
5 5
= 98/5 ÷ 24/5 (ontaking reciprocals,)
= 98/5 x 5/24
= 98/24
= 49/12
What are the solutions of x^2=-7x-8
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The solutions to the quadratic equation x² = -7x - 8 are x equals \(\frac{-7 - \sqrt{17}}{2}, \frac{-7 + \sqrt{17}}{2}\).
What are the solutions to the quadratic equation?Given the quadratic equation in the question:
x² = -7x - 8
To find the solutions of the quadratic equation x² = -7x - 8, we can rearrange it into standard quadratic form, which is ax² + bx + c = 0, and apply the quadratic formula.
x² = -7x - 8
x² + 7x + 8 = 0
a = 1, b = 7 and c = 8
Plug these into the quadratic formula: ±
\(x = \frac{-b \± \sqrt{b^2 -4(ac)}}{2a} \\\\x = \frac{-7 \± \sqrt{7^2 -4(1*8)}}{2*1} \\\\x = \frac{-7 \± \sqrt{49 -4(8)}}{2} \\\\x = \frac{-7 \± \sqrt{49 - 32}}{2} \\\\x = \frac{-7 \± \sqrt{17}}{2} \\\\x = \frac{-7 - \sqrt{17}}{2}, \frac{-7 + \sqrt{17}}{2}\)
Therefore, the values of x are \(\frac{-7 - \sqrt{17}}{2}, \frac{-7 + \sqrt{17}}{2}\).
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Please answer these two questions correctly please
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line COD is the diameter
A chord is a line segment that goes from one point to another on the circle’s circumference.
The diameter is when the line goes through the center
a cereal comes in three different package sizes. what is the ratio of the cost of an 8-ounce box to a 16-ounce box of cereal? show your work on the sketchpad or explain in the text box.
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As per the given scenario, a cereal comes in three different package sizes.
The ratio of the cost of an 8-ounce box to a 16-ounce box of cereal can be calculated as follows :Ratio of 8-ounce box to 16-ounce box= 8 : 16Here, the ratio of 8 and 16 can be simplified by dividing both the terms by \(8.8 : 16 = 1 : 2\)
Therefore, the ratio of the cost of an 8-ounce box to a 16-ounce box of cereal is 1 : 2.
Note: The answer should be represented in the simplest form possible.
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Al graficar la siguiente función: f(x) = -3x
A.
Se obtiene una recta que pasa por el origen (0,0)
B.
La recta interseca al eje y en -1
C.
La Recta interseca al eje y en 1
D.
La Recta interseca al eje y en -3
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Step-by-step explanation:
\(f(x) = - 3x \\ at \: (0, \: 0) \\ f(0) = - 3 \times 0 \\ f(0) = 0\)
What kind of triangle do you have if it has an obtuse angle which measures more than 90 degrees but less than 180 degrees?.
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If a triangle has an obtuse angle which measures more than 90 degrees but less than 180 degrees it is an obtuse angled triangle.
When one of the vertex angles of a triangle is greater than 90°, it is called an obtuse angle triangle
An obtuse triangle can either be an isosceles or a scalene triangle but not an equilateral triangle.
In an obtuse angle triangle, the sum of the squares of the two sides is always less than the square of the longest side.
Therefore, if a triangle has an obtuse angle which measures more than 90 degrees but less than 180 degrees it is an obtuse angled triangle.
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Fermat fc won 45% of the 60 games they played last season. How many games did fermat fc win last season
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Answer:
Fermat FC won 27 games.
Step-by-step explanation:
Convert percentage to fraction
45% --> 45/100
Multiply the fraction by the dividend
45/100 x 60 = 27
What is the approximate total area, in square inches, of the figure below?
Answers- 1.) 102.6
2.) 67.3
3.) 60.3
4.) 95.6
Please tell i need to turn it in soon!
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Answer: You didnt add the image. I cant answer it without the image
Step-by-step explanation:
Divide x4-3x3-5X2-7x-9 by x + 1.
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The division of x4-3x3-5X2-7x-9 by x + 1. yields; x²-4x²-x-6 with a remainder of -3.
Division of polynomialsFrom the task content;
It follows that the division can be carried out using the long division method.The division of the polynomial x⁴-3x³-5x²-7x-9 by (x+1) therefore yields; x²-4x²-x-6 with a remainder of -3.
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a microorganism measures 5 μm in length. its length in mm would be
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The length of the microorganism that measure 5μm is equivalent to 0.005 mm
What is unit conversion?It is the transformation of a value expressed in one unit of measurement into an equivalent value expressed in another unit of measurement of the same nature.
To solve this problem the we have to convert the units with the given information.
1mm is equal to 1000 μm
5μm * (1 mm/1000μm) = (5*1) / 1000 = 5/1000 = 0.005 mm = 5x10^-3 mm
The length of the microorganism that measure 5μm is equivalent to 0.005 mm
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what is the answer to: − 2 − 1 3 . 8 = − 8 − ( 6 + 1 )?
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10] James is about to paint the walls of his lounge. The lounge has 4 walls (2 x Wall A and 2 x Wall B). Wall A and wall B which has a square window of side 1.0m, are shown below:
Wall A Wall B
3.0m
4.0m
5.0m
A can of paint advertises coverage of 4.5 m2. How much paint will James require?
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Answer:
4 or 5
Step-by-step explanation:
a restaurant wants to know if men and women's opinion on the new entrance fragrance is equal. the null and alternate hypothesis would be written as
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The options are given as follows:
a. H0: fragrance opinion is not independent of gender; Ha: fragrance opinion is independent of gender
b. H0: gender = fragrance opinion; Ha: gender \(\neq\) fragrance opinion
c. H0: fragrance opinion is independent of gender; Ha: fragrance opinion is not independent of gender
d. H0: gender \(\neq\) fragrance opinion; Ha: gender = fragrance opinion
The null hypothesis of a test always predicts no effect or no relationship between variables, while the alternative hypothesis states your research prediction of an effect or relationship.
The answer is option (d).
H0: gender \(\neq\) fragrance opinion
Ha: gender = fragrance opinion
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Given the function
y
=
(
−
6
+
x
−
6
x
2
)
(
−
9
−
9
x
)
,
y=(−6+x−6x
2
)(−9−9x), find
d
y
d
x
dx
dy
in any form.
Answers
Answer:
y=6+2x
Step-by-step explanation:
which sample will have a larger chi-square test statistic? (see if you can tell without doing any calculations.)
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The sample with more observations and/or more variability in the data will generally have a larger chi-square test statistic.
Chi-square test statistic is a measure of how well a set of observed data fits a theoretical model. The larger the sample size and the more variability in the data, the more likely it is that the theoretical model won't fit the data perfectly. Therefore, the larger sample size and variability in the data will lead to a larger chi-square test statistic.
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What value of c will complete the square in the expression below to make it a perfect square trinomial? x² - 9x + c Enter the perfect square trinomial as a squared binomial.
Answers
Answer:
c = \(\frac{81}{4}\)
Step-by-step explanation:
x² - 9x + c
to complete the square
add ( half the coefficient of the x- term)² to x² - 9x
= x² + 2(- \(\frac{9}{2}\) )x + ( - \(\frac{9}{2}\) )²
= x² - 9x + \(\frac{81}{4}\) → with c = \(\frac{81}{4}\)
= (x - \(\frac{9}{2}\) )²
The quadrant model of communication styles assumes that all people:
A) understand the quadrant model well enough to choose their point on the quadrant
B) fit into four discrete, unchanging categories and can be easily assessed in that category by others
C) change from quadrant to quadrant somewhat regularly
D) are aware of their communication style and can alter it depending on the situation
E) have a relatively consistent point on both the dominance and sociability continuums
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The correct answer is E) have a relatively consistent point on both the dominance and sociability continuums.
The quadrant model of communication styles is based on the assumption that all people have a relatively consistent point on both the dominance and sociability continuums. This means that people tend to have a preferred communication style that is characterized by a particular combination of dominance and sociability. However, this does not mean that people fit into four discrete, unchanging categories that can be easily assessed by others. In fact, the quadrant model recognizes that people's communication styles can vary depending on the situation, and that individuals may shift from one quadrant to another depending on the context.
Therefore, options A, B, C, and D are incorrect.
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If x is inversely proportional to y, then as x decreases, y decreases.
Answers
Answer:
Yes
Step-by-step explanation:
Let's assume that x=1/y.
For y=1, x=1
For y=2, x=0.5
For y=4, x=0.25
And so on
Does 0.63 terminate?
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Answer:
No (unless it happens to have a vinculum on top of any digit image attached is an example of a vinculum)
Step-by-step explanation:
0.63 just stops at 0.63
Helppp!!!!!!!!!!!!!!!!!!!!!
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The value of x is equal to 15°
How to determine the value of x?In Mathematics and Geometry, the sum of the exterior angles of both a regular and irregular polygon is always equal to 360 degrees.
Note: The given geometric figure (regular polygon) represents a pentagon and it has 5 sides.
By substituting the given parameters, we have the following:
3x + 4x + 8 + 5x + 5 + 6x - 1 + 5x + 3 = 360°.
3x + 4x + 5x + 6x + 5x + 8 + 5 - 1 + 3 = 360°.
23x + 15 = 360°.
23x = 360 - 15
23x = 345
x = 345/23
x = 15°.
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how tall is the cat?
Answers
The height of the cat is solved to be
4 m
What are similar triangles?This is a term used in geometry to mean that the respective sides of the triangles are proportional and the corresponding angles of the triangles are congruent
Examining the figure shows that pair of equivalent sides are
distance of the tree and the cat from the mirror
then height of the tree and height of the cat
The solution is worked out taking the proportions
distance of the tree from the mirror / distance of the cat from the mirror
=
height of the tree / height of the cat
plugging in the values
24/6 = 16 / height of the cat
height of the cat = 16 * 6 / 24
height of the cat = 4 m
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Mrs. Delgado said that 21 out of 25 students passed the test. What percent did NOT pass the test?
Answers
Answer:
16% of the students did not pass the test.
Step-by-step explanation:
Since 25 is 1/4 of 100, multiply it by 4 to equal 100.
Now multiply the percentage passed by 4. This equals 84.
84 out of 100 = 84%
So, the rest of the students(the ones who did not pass) is 16% of the class.