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Vinil7 [7]
3 years ago
7

Steve is about to take his fifth math test. His scores on the first four test were 84, 92, 71, and 94. What score does Steve nee

d on his fifth test in order to have an average of exactly 85?
Mathematics
1 answer:
lyudmila [28]3 years ago
4 0

Answer:

  84

Step-by-step explanation:

The sum of the differences of the current scores from average is ...

  (84 -85) +(92 -85) +(71-85) +(94 -85) = -1 +7 -14 +9 = 1

So, to make the total of all differences from average be zero, Steve must get a score of 85 -1 = 84 on his 5th test.

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For what value(s) of k will the relation not be a function?<br> A = {(3k−4, 16), (4k, 32)}
KiRa [710]

We won't have a function if for same value of x in (x,y) we get different values y.

So first step: figure out k so that the first coordinate (x) is the same:

3k-4=4k    | solve for k

k = -4

no check the values y for the elements of the relation

x = 3k-4 = -12-4=-16

so at -16 we get (-16,16) and (-16, 32), which mean for k=-4 the relation is not a function.

Let me know if you have any questions.


7 0
3 years ago
Read 2 more answers
If inflation from last year to this year was 2% and a pair of designer jeans sold for $75 last year, what would you expect to pa
tamaranim1 [39]

Answer:

$76.5

Step-by-step explanation:

We have been given that inflation from last year to this year was 2% and a pair of designer jeans sold for $75 last year. We are asked to find the price of pair of designer jeans this year.

An inflation of 2% will increase the price of pair of jeans by 2%, so price of pair of jeans this year would be $75 plus 2% of $75.

\text{Price of pair of jeans this year}=\$75+\$75\times\frac{2}{100}

\text{Price of pair of jeans this year}=\$75+\$75\times0.02

\text{Price of pair of jeans this year}=\$75+\$1.5

\text{Price of pair of jeans this year}=\$76.5

Therefore, the price of pair of jeans would be $76.5 this year.

7 0
3 years ago
Claudia added an equilateral triangle shape that is one inch high and one inch wide to a slide in her presentation. She clicked
mr_godi [17]

The effect of Claudia's changing the height of of the triangle from 1 inch

to 3 inches is the option;

  • The height of the triangle changed to three inches but the width remained 1 inch

<h3>Which option gives the effect of changing the height?</h3>

The given dimensions of the equilateral triangle Claudia added are;

Height of the triangle = 1 inch

Width of the triangle = 1 inch

The value Claudia typed in the Shape Height box = 3

Required:

What happened to the shape after she press Enter

Solution:

By entering 3 in the Shape Height box, changes the height of the

equilateral triangle to 3 inches but the width remains 1 inches

From a similar question posted online, the correct option is therefore;

  • The height of the triangle changed to three inches but the width remained 1 inch

Learn more about triangles here:

brainly.com/question/16430835

3 0
2 years ago
Jimmy is buying 2 pairs of pants that cost $14.50 each. There is a 7.5% sales tax What is the total Jimmy will pay for the pants
dangina [55]

Answer:

$31.18

Step-by-step explanation:

14.50 x 2 = 29

29 x 0.075 = 2.175

29 + 2.175 = 31.175

Round up to 31.18

5 0
3 years ago
$82;35% discount answer
Musya8 [376]
82 times 0.35
the answer is 28.7
3 0
3 years ago
Read 2 more answers
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