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3 years ago

We need help and we don’t now what we are doing

Mathematics

1 answer:

densk [106]3 years ago

3 0

Answer:

The second, third, and fifth one.

Step-by-step explanation:

Home this helps

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Kurt has $20. He spends $8. What percent of his money did Kurt spend?

wlad13 [49]

Answer:

40% Hope I helped

7 0

3 years ago

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A girl threw a marble 15 m vertically up in the air which later fell and settled at the bottom of a lake 7 m deep. Find the tota

emmasim [6.3K]

Answer:

22 m

Step-by-step explanation:

Total distance travelled by marble while falling down = height above surface of lake + depth of lake = 15 + 7 = 22 m

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3 years ago

Find the area. If applicable, leave the answer in simplest radical form. Helpp

inna [77]

Answer:

The area is $28\ m^{2}$

Step-by-step explanation:

I assume that the figure is a square

The area of a square is equal to

$A=b^{2}$

where

b is the length side of the square

In this problem we have

$b=2(\sqrt{7})=2\sqrt{7}\ m$

substitute in the formula

$A=(2\sqrt{7})^{2}$

$A=28\ m^{2}$

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3 years ago

Lisa's test grades are 79, 89 and 90

Vaselesa [24]

Answer:

Step-by-step explanation:

Equating the mean to the scores :

88 = 79 + 89 + 90 + x / 4
352 = 258 + x
x = <u>94</u>

6 0

2 years ago

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Round Ed to the nearthest tenth and answer now question

Vikki [24]

Answer:

$y = 9.1$

Step-by-step explanation:

y can be found using the Law of sines as explained below:

m < Y = 106°

m < X = 58°

WY = x = 8

WX = y = ?

Thus,

$\frac{x}{sin(X)} = \frac{y}{sin(Y)}$

$\frac{8}{sin(58)} = \frac{y}{sin(106)}$

$\frac{8}{0.848} = \frac{y}{0.961}$

Multiply both sides by 0.961 to solve for y

$\frac{8}{0.848}*0.961 = \frac{y}{0.961}*0.961$

$\frac{8*0.961}{0.848} = y$

$\frac{8*0.961}{0.848}*0.961 = y$

$9.07 = y$

$y = 9.1$ (to the nearest tenth)

7 0

3 years ago