Ask question

Ask question

All categories

Paladinen [302]

3 years ago

7

Answered 36 problems correctly. The grade was 45%. They would like to score a 75% on the next retake test. How many more problem

s do they need to answer correctly.

1 answer:

puteri [66]3 years ago

6 0

Answer:

24

Step-by-step explanation:

0.45 = 36/x

x = 80, where x is the total number of questions

0.75 = z/80

z = 60, where z is the number of correct answers

60-36=24 more problems correct

You might be interested in

You have 100 feet of fencing and decide to make a rectangular garden. What is the largest area enclosed

k0ka [10]

Answer:

625 ft^2

Step-by-step explanation:

Given

$P = 100$ --- perimeter

Required

The largest area

The perimeter is calculated as:

$P = 2 * ( L + W)$

So, we have:

$2 * ( L + W) = 100$

Divide both sides by 2

$L + W = 50$

Make L the subject

$L = 50 - W$

The area is calculated as:

$A= L * W$

Substitute $L = 50 - W$

$A= (50 - W) * W$

Open bracket

$A = 50W - W^2$

Differentiate with respect to W

$A' = 50 -2W$

Set to 0; to get the maximum value of W

$50 - 2W = 0$

Collect like terms

$-2W = -50$

Divide by -2

$W = 25$

So, the maximum area is:

$A = 50W - W^2$

$A = 50 * 25 - 25^2$

$A = 1250 - 625$

$A = 625$

3 0

3 years ago

Add. Write your answers in simplest form.<br><br>10 1/6+12 1/10

Scrat [10]

334/15 also known as 22.26

5 0

4 years ago

What is the area of the shaded sector?

umka2103 [35]

40pie units squared / esa es

6 0

3 years ago

Drag each equation to the correct location on the table. Classify each function as linear or nonlinear.

drek231 [11]

Answer:

B and f

Step-by-step explanation:

Because I did the work

8 0

3 years ago

How to prove using basic definitions,<br> If xy=xz then y=z

Zinaida [17]

Division. The x is divided from both sides.

7 0

4 years ago

Read 2 more answers