Evaluate 2-(-4)+(-y)2−(−4)+(−y)2, minus, left parenthesis, minus, 4, right parenthesis, plus, left parenthesis, minus, y, right parenthesis where y = 7y=7y, equals, 7.
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Answers
The value of the expression \(2-(-4)+(-y)^2-(-4)+(-y)^2\) after substituting y = 7 is 108
Evaluation of ExpressionThe given expression is:
\(2-(-4)+(-y)^2-(-4)+(-y)^2\)
Simplifying the expression, we have:
\(2+4+y^2+4+y^2\\\\2y^2+10\)
Substitute y = 7 into the simplified expression
\(2(7)^2+10\\\\=2(49)+10\\\\=98+10\\\\=108\)
Therefore, after substituting y = 7, into the expression \(2-(-4)+(-y)^2-(-4)+(-y)^2\), the resulting value is 108
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Answer: -1
Step-by-step explanation: khan academy
Related Questions
Evaluate the expression for h = 6 and j = 5.
hj - h² =
Submit
Answers
Therefore, when h = 6 and j = 5, the value of hj - h² is -6.
What are arithmetic operations:Arithmetic operations are basic mathematical operations that involve manipulating numbers to perform calculations. There are four main arithmetic operations:
Addition: Adding two or more numbers together. The symbol used to represent addition is "+", and the result is called the sum.
Subtraction: Subtracting one number from another. The symbol used to represent subtraction is "-", and the result is called the difference.
Multiplication: Multiplying two or more numbers together. The symbol used to represent multiplication is "×" or "*", and the result is called the product.
Division: Dividing one number by another. The symbol used to represent division is "÷" or "/", and the result is called the quotient.
These operations can be combined to perform more complex calculations. Additionally, there are other arithmetic operations, such as exponentiation (raising a number to a power) and finding roots, which involve using arithmetic principles.
by the question.
To evaluate the expression hj - h² for h = 6 and j = 5, we simply substitute these values into the expression and perform the arithmetic operations:
hj - h² = (6)(5) - 6²
= 30 - 36
= -6
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if it is given that "x" is 23.5 - proof that it is a point of intersection at y= 1/2(x) - 25 if y is equal to 11. been trying but not working out.
Answers
When substituting y = 11 into the equation y = 1/2(x) - 25, we find that x = 72, confirming that (23.5, 11) is a valid point of intersection.
Given that x is 23.5, it is required to prove that it is an intersection point for the equation y = 1/2(x) - 25 when y is equal to 11.
The equation is given as y = 1/2(x) - 25
When y = 11, we can substitute the value of y in the equation to obtain 11 = 1/2(x) - 25
This can be simplified as 11 + 25 = 1/2(x)36 = 1/2(x)
On solving, x = 72Thus, when y is equal to 11 and x is equal to 72, the given point of intersection is valid.
Therefore, it can be concluded that x = 23.5 is a point of intersection for the equation y = 1/2(x) - 25 when y is equal to 11.
In summary, when given an equation with two variables, we can find the point of intersection by setting one of the variables to a given value and solving for the other variable. In this case, when y is equal to 11, we can solve for x and obtain the point of intersection as (72,11).
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Find the area of the shape shown below.
Answers
Answer:
The answer is 32
Step-by-step explanation:
The formula for finding the area of a trapezoid is:
((base 1 + base 2)/ 2 )* h
Now all you have to do is substitute the numbers in.
Note: bases will always be the ones like 12 and 4 in this case. We have just named then 1 and 2.
Answer:
32 square units
Step-by-step explanation:
\(\displaystyle A=\frac{1}{2}(b_1+b_2)h=\frac{1}{2}(12+4)(4)=\frac{1}{2}(16)(4)=\frac{1}{2}(64)=32\)
Note that \(b_1\) and \(b_2\) are the lengths of each base of the trapezoid, so it doesn't matter which is which.
Find the measure of the angles
Answers
Step-by-step explanation:
Make sure the bottom line of the angle points to 0. Then slowly go up until the other line hits a number. In this case, it's 40 degrees
Please help asap!!!!!!
Answers
By SAS congruence triangle MLN and triangle OLN are congruent.
What is the congruence theorem?Triangle congruence theorem or triangle congruence criteria help in proving if a triangle is congruent or not. The word congruent means exactly equal in shape and size no matter if we turn it, flip it or rotate it.
Given that, LM≅LO, ∠MLN≅∠OLN.
LM≅LO (Given)
∠MLN≅∠OLN (Given)
LN≅LN (Reflexive property of congruence)
ΔMLN≅ΔOLN (SAS congruence)
∠M≅∠O (CPTC)
MN≅ON (CPTC)
Therefore, by SAS congruence triangle MLN and triangle OLN are congruent.
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To find the quotient of 407.26 and 1,000, move the decimal point in 407.26
"#"
places to the
Left or right?
Answers
Answer:
Three places to the left
Step-by-step explanation:
It would be moved to the left because 407.26 is being divided by 1000, not multiplied. It would be 3 because there are three zeroes in 1000.
Answer:
left
Step-by-step explanation:
the number of places must correspond to the number of zeros.
for example. 407.26 and 100.
you need to move the point twice to the left. which will give you...4.0726.
Which statement about the location of √7 on the number line is true?
A= It is located at the number 7 on the number line.
B= It is located at the number 3.5 on the number line.
C= It is located between the numbers 2 and 3 on the number line.
D=It is located between the numbers 4 and 9 on the number line
Answers
Explanation
The square root of a number is “what number times itself”
2 x 2 = 4
3 x 3 = 9
7 is between 4 and 9 so C is the correct answer
Angles A and C are supplementary. Find the measure of angle C.
Angle EAB is 74 degrees. Angle FCD is undetermined.
How do I solve this problem?
Answers
In the given situation where ∠A and ∠C are supplementary, the angle ∠C is 106°.
What are supplementary angles?Angles that add up to 180 degrees are referred to as supplementary angles.
For instance, angle 130° and angle 50° are complementary angles since the sum of these two angles is 180°.
Two angles are complementary if their sum equals 90 degrees, and supplementary if their sum equals 180 degrees.
Because the three angles of a triangle sum up to 180° and the right angle has already taken up 90°, the two non-right angles in a right-angled triangle are complementary.
We say two angles "Complement" one other when their sums equal 90 degrees.
So, we already are aware of that:
∠A and ∠C are supplementary
∠A is 74°
Then, ∠C would be:
∠A + ∠C = 180
74 + ∠C = 180
∠C = 180 - 74
∠C = 106
Therefore, in the given situation where ∠A and ∠C are supplementary, the angle ∠C is 106°.
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Correct question:
Angles A and C are supplementary. Find the measure of angle C.
(Refer to the image below)
Find the sum of the integers between 23 and 47.
Answers
Answer:
70
Step-by-step explanation:
23+47
Find the area of the figure (please hurry!)
Answers
Answer: 32
Step-by-step explanation:
a=4×8=32
Help Please!! I WILL give brainliest and thanks!!
Which of these inequalities are equivalent to r > -11?
Check all that apply.
-r -33
-3r 33
Random answers get reported
Answers
Answer:
ez pts tysm
Step-by-step explanation:
Someone please help answer !
Choose the number that is closest to the mean of the distribution
Answers
The mean of the distribution is 3
What is arithmetic mean?Arithmetic mean is defined as the ratio of the sum of observations to the total number of observations. It can be referred to as the average of a specific set of data or the arithmetic mean. One of the basic methods used to acquire a result, the term "Mean" is commonly used in the field of statistics.
The formula for the mean of a given set of data is as follows:
Mean = Sum of Observations/Total number of observations
According to the first graph,
Given the bar of observations as :
0, 5, 6, 3, 1, 1, 3, 6, 4, 1
Here the Sum of Observations = 30
And the total number of observations = 10
The mean of the distribution = 30/10
The mean of the distribution = 3
According to the second graph,
Given the bar of observations as :
0, 1, 3, 3, 9, 0, 9, 4, 4, 1
Here the Sum of Observations = 34
And the total number of observations = 10
The mean of the distribution = 34/10
The mean of the distribution = 3.4
The mean of the distribution = 4 (closest)
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any firms use on-the-job training to teach their employees computer programming. Supposeyou work in the personnel department of a firm that just finished training a group of its employeesto program, and you have been requested to review the performance of one of the trainees on thefinal test that was given to all trainees. The mean and standard deviation of the test scores are 70and 3, respectively, and the distribution of scores is mound-shaped and symmetric. Suppose thetrainee in question received a score of 60. Compute the trainee's z-score.
Answers
Answer:
-3.33
Step-by-step explanation:
The formula for calculating a z-score is is z = (x-μ)/σ,
where x is the raw score
μ is the population mean
σ is the population standard deviation.
x = 60, μ = 70, σ = 3
z = 60 - 70/3
z = -10/3
z = - 3.3333333333
Approximately, the students z score = -3.33
simplify each of the following if possible state restrictions wherenecessary
Answers
Given
\(\sqrt[]{2}\times\sqrt[]{5}\)Answer
\(\begin{gathered} \sqrt[]{2}\times\sqrt[]{5} \\ =\sqrt[]{2\times5} \\ =\sqrt[]{10} \end{gathered}\)Rectangle WXYZ is dilated with center (0, 0) and scale factor 2. What are the final coordinates?
Remember to find the coordinates of the original rectangle in the grid and then multiply by scale factor.
Answers
Answer:
B W(2,-4),X(6,-4)Y(6-10),Z(2,-10)
Step-by-step explanation:
i think dont get ur hopes ^
1. Match the picture of the triangle to the correct name for its center,
Answers
1. d 2. a 3. c 4. b
Step-by-step explanation:\(1.d\ \{The\ intersection\ of\ three\ high\ lines\}\)
\(2.\ a\)
\(3.\ C\)
\(4.\ b\ \{The\ intersection\ of\ three\ angular\)
\(bisectors\}\)
I hope this helps you
:)
Answer:
dbcaStep-by-step explanation:
Various centers are defined for a triangle, depending on how they're constructed. Here, you're asked to match the construction with the name.
__
OrthocenterThe orthocenter is the intersection of the altitudes of the triangle. Each altitude intersects a vertex and is orthogonal to the opposite side. The orthocenter will not be inside the triangle if the triangle is obtuse. The orthocenter of a right triangle is the right-angle vertex.
Figure D depicts the intersection of altitudes.
__
IncenterThe incenter is the center of an inscribed circle of a triangle. The incenter must be the same distance from each side, so will be at the point of intersection of the angle bisectors. It always lies inside the triangle.
Figure B depicts the intersection of angle bisectors.
__
CentroidThe centroid is the "center of gravity" of the triangle, the point at which the triangle could be balanced. Each median divides the triangle into two equal areas, so the intersection of medians marks a spot with equal area (weight) in every pair of opposite directions.
Figure C depicts the intersection of medians.
__
CircumcenterThe circumcenter is the center of a circle that circumscribes the triangle. It is equidistant from the three vertices, so lies on the intersection of the perpendicular bisectors of the sides. It will lie outside the triangle for obtuse triangles. It is the midpoint of the hypotenuse of a right triangle.
Figure A depicts the intersection of perpendicular bisectors of the sides.
How many outcomes (sample points) for a deal of two cards from a 52-card deck are possible? Report your answer as an integer.
Answers
Answer:
1326
Step-by-step explanation:
\({52\choose2}=\frac{52!}{(52-2)!2!}=\frac{52!}{50!*2!}=1326\)
f: {whole numbers} → {whole numbers} Assign each whole number to its largest place value digit. For example, f(4) = 4, f(14) = 4, and f(194) = 9.
f (999)
Answers
Answer:
9
Step-by-step explanation:
Select the values that make the inequality -k ≤ 4 true.
Then write an equivalent inequality, in terms of k.
(Numbers written in order from least to greatest going across.)
Answers
The values that make the inequality true are -7, -6, -5 and -4
How to determine the values that make the inequality trueFrom the question, we have the following parameters that can be used in our computation:
-k ≤ 4
Solving further, we need to make k the subject of the formula
This is done by dividing both sides of the inequality by -1
Using the above as a guide, we have the following:
So, we have the following representation
-k/-1 ≤ 4/-1
Evaluate the quotient
This gives
k ≤ -4
Hence, the solution is k ≤ -4 and the values of k are values that do not exceed -4
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solve for y* w + py = e
Answers
In a classroom, 100 plastic fish are in a tub. The tub is hidden from the student view. Some fish are green, and the rest are yellow. The students know that there are 100 fish, but they don’t know how many of each color there are. The students go fishing, each time, picking a random fish from the tub, recording its color, and throwing the fish back in the tub. At the end of the day, 65 fish have been chosen, 12, green and 53 yellow. What is the best estimate you can give for the number of green fish in the number of yellow fish in the tub? Describe how to calculate this best estimate, and explain why your method of calculation makes sense in a way that a seventh grader my understand. Is your best estimate necessarily accurate? Why or why not?
Answers
The best estimate for the number of fish is that there are 82 yellow fish and 18 green fish, which you can calculate using the rule of three. This estimate is expected to be accurate.
What is the estimated number of fish of each color?This can be calculated using a rule of three as follows. Let's start with the yellow fish:
53 = 65
x = 100
53 x 100 / 65 = 82 yellow fish
Green fish:
12 = 65
x = 100
12 x 100 / 65= 18 green fish
Is this estimate accurate?This estimate is expected to be accurate; however, there might be small differences in real life such as 80 yellow fish and 20 green fish.
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If log 2=a and log 3=b express log 12 in terms of a and b.
PLEASE HELP ME PLEASEEEEEE!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
2a +b
Step-by-step explanation:
The rule for logarithms is ...
log(xy) = log(x) +log(y)
__
Applying this to the given problem, we have ...
log(12) = log(2×2×3)
= log(2) +log(2) +log(3)
= a + a + b
= 2a +b
Your boss hands you a memo with a summary of the monthly data. The number of imports is shown as fx), and the number of exports is shown as gx). Use the data in the table below, representing both functions, to explain to your boss the solution to the system of equations and what that solution represents. Use complete sentences.
Answers
Answer:
The solution to the system of equations would be if the number of imports and exports are the same. In this case, the solution is January because the number of imports and exports are both 3.
Step-by-step explanation:
I’m smart
CAN U PLEAS HELP ME SIMPLIFY THIS AND PLEASE EXPLAIN YOUR REASONING THOROUGHLY BEHIND THIS
\(\sqrt{8}+\sqrt{50}\)
Answers
Answer:
7√2Step-by-step explanation:
Given:
√8 + √50We can see that:
8 = 4*2 = 2²*2 and50 = 25*2 = 5²*2Since 2² and 5² are perfect squares we get:
√8 + √50 = 2√2 + 5√2 =(2 + 5)√2 = 7√2\(\\ \sf\longmapsto \sqrt{8}+\sqrt{50}\)
\(\\ \sf\longmapsto \sqrt{2(2)(2)}+\sqrt{2(5)(5)}\)
\(\\ \sf\longmapsto 2\sqrt{2}+5\sqrt{2}\)
\(\\ \sf\longmapsto (2+5)\sqrt{2}\)
\(\\ \sf\longmapsto 7\sqrt{2}\)
A bag of marbles has 12 green marbles, 5 red marbles, 8 blue marbles and 7 yellow marbles. What is the probability of randomly selecting a blue marble?
Answers
Probability = # of desired options / # of total options
Our desired option is blue and there are 9 blue marbles in the bag.
There are 32 total marbles (options) in the bag.
P(blue) = 9 / 32 = 0.28125 = 28.125%
Hope this helps!
If the balance at the end of eight years on an investment of $196 that has been invested at a rate of 9% is $337.12, how much was the interest
Answers
Answer:
$141.12
Step-by-step explanation:
Initial investment = $196
After 8 years with 9% interest rate it becomes: $337.12
The amount of interest will be:
= $337.12 - $196
= $141.12
Find two positive numbers whose difference is 28 and whose product is 2720.
Answers
Answer:
68 and 40
Step-by-step explanation:
x - y = 28
x * y = 2720
x = 28 + y
(28+y)y = 2720
28y+y^2 = 2720
y^2 + 28y - 2720 = 0
discriminant = 28^2 - 4(-2720) = 784 + 10 880 = 11 644
we are searching only the positive value
y = (-28 + 108)/2 = 80/2 = 40
x = 28 + 40 = 68
A cube measures 3.0 CM on each side and has a mass of 25g. What is the density?
Answers
Answer:
D ≈ 0.925926 g/cm³
Step-by-step explanation:
Density = Mass / Volume
Step 1: Define
M = 25 g
V = (3 cm)³ = 27 cm³
D = ?
Step 2: Substitute and Evaluate for Density
D = 25g / 27 cm³
D = 25/27 g/cm³
D ≈ 0.925926 g/cm³
giving 90 points! NEED IN TWO MINS
Answers
Answer:
300
Step-by-step explanation:
A=wl=10·30=300
multiply the length of the rectangle by the width of the rectangle.
The area is measurement of the surface of a shape. To find the area of a rectangle or a square you need to multiply the length and the width of a rectangle or a square. Area, A, is x times y.
Answer:
Area = 378.5 ft²
Step-by-step explanation:
The figure is having two semi circles and one rectangle.
\({ \sf{area = area \: of \: semicircles + area \: of \: rectangle}} \\ \\ { \sf{area = 2( \frac{1}{2} \pi {r}^{2}) + (l \times w) }} \\ \\ { \sf{area = \pi {r}^{2} + (l \times w) }} \\ \\ { \sf{area = 3.14 \times {5}^{2} + (30 \times 10)}} \\ \\ { \sf{area = 378.5 \: {ft}^{2} }}\)
I need help with this please
Answers
Answer:
Ricky is taller by 11 inches ( a)
Step-by-step explanation:
1 foot = 12 inches
5 feet= 60 inches
Ticky is 68 inches
Ricky is 79 inches
ricky-Ticky= 79- 68= 11 inchesss!