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Goshia [24]
3 years ago
9

I need help please help me.

Mathematics
1 answer:
alexandr1967 [171]3 years ago
6 0
7+7=14. 14+14=28. 14+28+13=55.
Answer: 55 Happy to help! :)
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I WILL MARK BRAINLIEST FOR CORRECT ANSWERS WITH AN EXPLANATION!
irina [24]

The value of x in the triangle is 9.3

<h3>How to find the side x of a triangle?</h3>

The side x of a triangle can be found as follows:

The triangle ABC is similar to triangle ADE.

Therefore, corresponding sides of similar triangles are in the same ratios.

Hence,

7  / 13 = x / x + 8

cross multiply

7(x + 8) = 13x

7x + 56 = 13x

subtract 7x from both sides of the equation

7x - 7x + 56 = 13x - 7x

56 = 6x

divide both sides by 6

x = 56 / 6

x = 9.33333333333

x = 9.3

learn more on triangle here: brainly.com/question/2292453

#SPJ1

7 0
1 year ago
How many cubes with edge lengths of 1/4 in. will it take to fill the prism?
Ulleksa [173]

Answer:

1560

Step-by-step explanation:

First (2 1/2)/(1/4) = (5/2)(4) = 20/2 = 10

Next, 3/(1/4) = 3(4) = 12

Lastly, (3 1/4)/(1/4) = (13/4) x 4 = 52/4 = 13

This means we need 10 rows of 12, 13 high. 10(12)(13) = 1560 cubes.

Another way is to multiply 2 1/2 x 3 x 3 1/4 = 5/2 x 3 x 13/4 = 195/8

A 1/4 inch cube is 1/4 x 1/4 x 1/4 for a volume of 1/64

(195/8)/(1/64) = (195/8)(64) = 1560 cubes.

3 0
2 years ago
Which is equivalent to the following expression? (2x^2+4xy-y^2)+(x^2+3xy-y^2)
Karo-lina-s [1.5K]

Answer C : 3x^2+7xy-2y^2

equivalent to the following expression

(2x^2+4xy-y^2)+(x^2+3xy-y^2)

2x^2+4xy-y^2+x^2+3xy-y^2

Combine like terms

2x^2+x^2+4xy+3xy-y^2-y^2

2x^2 + x^2 is 3x^2

4xy+3xy is 7xy

-y^2-y^2 is -2y^2

So expression becomes

3x^2+7xy-2y^2

Answer  C is correct

3 0
3 years ago
Read 2 more answers
Mr. Haley is leaning a ladder against the side of his house to repair the roof.
Ludmilka [50]

Answer:

20 feet

Step-by-step explanation:

Remember the Pythagorean theorem,

x^2 + y^2 = n^2

in this case

x= 16

y = 12

so substitute back into the equation

16^2 + 12^2 = n^2

256 + 144 = n^2

400 = n^2

sqrt ( 400) = n

20 = n

8 0
3 years ago
A beautiful cake was presented at a wedding reception. The cake measured 13.5 inches tall, including the decorative icing on top
Schach [20]

Using proportions, it is found that the thickness of the icing between the layers, in inches, is of:

E 1 inch

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount.

In this problem, there are six layers, each measuring 1.25 inches tall, hence the height of these layers is:

6 x 1.25 = 7.5 inches

Then the height of the icing between the layers is of:

13.5 - 7.5 = 6 inches

Six layers, hence each icing is of:

6/6 = 1 inch

More can be learned about proportions at brainly.com/question/24372153

5 0
2 years ago
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