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Dmitrij [34]
3 years ago
7

Complete the solution of the equation. Find the

Mathematics
1 answer:
borishaifa [10]3 years ago
6 0
The answer is -3 because 9x1=9 subtract 9 from both sides then divide by seven and you are left with -3
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What is the value of 3 + (-1/4)² ÷ 1/2?<br><br> A. 6 1/8<br> B. 21 1/8<br> C. 7<br> D. 3 1/8
Amiraneli [1.4K]
<span>3 + (-1/4)² ÷ 1/2
= </span><span>3 + 1/16 * 2
= 3 + 1/8
= 3 1/8

answer

</span><span>D. 3 1/8</span>
6 0
3 years ago
What is the measure of X?
AnnZ [28]

Answer:

A. 25.7°

Step-by-step explanation:

the sum of straight angle is 180°.

so, i subtract 154.3 from 180.

i get 25.7 °

3 0
2 years ago
The area of a square is 73.96 m^2 .calculate the length of its side.​
Anettt [7]

Answer:

8.6m

Step-by-step explanation:

mark me as the brainliest

4 0
3 years ago
Read 2 more answers
NEED HELP FAST!!!!! The graph below compares plant height to the age of the plant, in weeks. Y=1.3x-0.8 Based on the graph, whic
salantis [7]

Answer:

C) 6 inches

Step-by-step explanation:

Given function:

Y=1.3x-0.8

The function compares plant height in inches to the age of plant in weeks.

So, we can say

Y represents height of plant in inches.

x represents age of the plant in weeks.

In order to predict the height of the plant in 5 weeks, we will plugin x=5 in the given function and evaluate Y

⇒ Y=1.3(5)-0.8

⇒ Y=6.5-0.8

⇒ Y=5.7 inches

Thus the approximate height of plant in 5 weeks would be \approx 6 inches

7 0
3 years ago
Read 2 more answers
(20 pts!) if the base of the roof has length 40 feet and x=30, which of the following gives the height of the roof?
musickatia [10]

Answer:

23.094 ft approximately

(If you want your answer in a different format, let me know please.)

Step-by-step explanation:

I would have solve this using tangent since the side opposite to x is asked for and the adjacent side to side is given as having a measurement of 40 ft.

But I think they want you to use the formula:

l=\frac{b}{\cos(x)}.

l=\frac{40}{\cos(30)}

Input into calculator:

l=46.188 (approximation)

l represents the length of the roof.

So we have l=46.188 and b=40.

We must use the Pythagorean Theorem to find the height,h, for of the roof.

l is the hypotenuse.

h^2+40^2=46.188^2

h^2+1600=2133.331

Subtract 1600 on both sides:

h^2=533.331

Take square root of both sides:

h=23.094

The answer is 23.094 feet for the height that roof reaches on the building.

I want to show you another way:

\tan(x)=\frac{\text{opposite}}{\text{adjacent}}

\tan(30)=\frac{h}{40}

Multiply both sides by 40:

40\tan(30)=h

Input into calculator:

23.094=h

I didn't do it this way because your problem suggested you use their formula to find the height.

8 0
3 years ago
Read 2 more answers
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