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alekssr [168]
3 years ago
7

2. Perform the following operations to find the terms to complete the blanks.

Mathematics
1 answer:
bogdanovich [222]3 years ago
3 0

Answer:

27m3- is the answer equals to 8n 3

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Does anyone know the answer? I want to make sure I did it right. Evaluate the expression using the given values type your answer
Afina-wow [57]
<h3>Answer:  76 </h3>

=======================================================

Explanation:

Replace x with 4 and y with 5.

Then use the order of operations (PEMDAS) to simplify until you get a single number.

Something like 9x means "9 times x", and a similar situation happens with the 8y term as well.

---------

Here's what the steps look like:

9x + 8y

9*4 + 8*5

36 + 40

76

Therefore, 9x+8y = 76 when x = 4 and y = 5.

The point (4,5) is located on the line 9x+8y = 76

5 0
2 years ago
an economics professor gives a test to gauge the math preparedness of his students. he believes that the performance on the test
STALIN [3.7K]

Answer:

hello your question is incomplete, the missing part of the question is attached below

answer :

1) β1 = 0.25

  β2 = 4.85

2)  40.55 + 0.25 ( math score ) + 4.85 ( hours )

Step-by-step explanation:

<u>1) The estimate for β1 and β2 </u>

From the attached excel result the estimates are ;

β1 = 0.25 : This shows the change in the mean value of the  final score in relation to the change in math score while the time is kept constant

β2 = 4.85 : This represents the change in the mean value of the final score in relation to the change in time while the math score is held constant

<u>2) sample regression equation</u>

The Final sample regression equation = 40.55 + 0.25 ( math score ) + 4.85 ( hours )

4 0
3 years ago
Micaela bought a concert ticket online for $76. She used a coupon code to get a 20%
Tresset [83]
The discount of the fee given is to be subtracted from the fee
And the processing fee is to be added to the fee after the discount is subtracted
Then the amount gotten after the calculation is have she pays

4 0
2 years ago
There are 120 teachers in a ABC school. Determine the value of k using the systematic sampling technique to select a sample of 4
Svetradugi [14.3K]

Answer:

K=30

Step-by-step explanation:

120÷4 = 30

k=30

7 0
3 years ago
PLS HALP on formulas involving polygons
jeyben [28]
The sum of all five angles is 540 degrees.
A) 4*congruent angles + 5th angle = 540
B) (5th angle) -30 = 2*cong angle

A) 5th angle = 540 -4*cong angle
B) 5th angle  = 2*(cong angle)   -30
Multiplying B) by -1
B) -5th angle  = -2*(cong angle)   +30  then adding to A)
A) 5th angle = 540 -4*cong angle

-2*(cong angle)   +30  = 540 -4*cong angle
2*(cong angle) = 510
*****************************************
By trial and error I determined
each congruent angle = 95
5th angle = 160
6 0
4 years ago
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