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sweet [91]
4 years ago
7

What is the value of x?

Mathematics
2 answers:
Mariulka [41]4 years ago
4 0

Answer:  x = 7

`Step-by-step explanation:

Because the figure shows two triangles that are similar. we can write and solve an equation of ratios:

 9 cm       72 cm

----------- = -----------

3x - 20      56 cm

Cross-multiplying, we get (3x - 20)(72 cm) = (9 cm)(56 cm) = 504 cm²

Dividing both sides by 72 cm, we get:

3x - 20 = (504 cm²) / (72 cm) = 7

Then 3x - 20 = 7, and 3x = 27.  Then x must be 9.

Vika [28.1K]4 years ago
4 0

Answer:

I just did the quiz. The answer would be 9. Hope this helps :)

Step-by-step explanation:

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Please help with this question! I don't understand!!
marissa [1.9K]

the answer is A 2.3

in order to solve this problem you have to devide 9 by 4 and you get 2.25 then round 2.25 to 2.3 and that is your answer

hope this helps

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7 0
4 years ago
All tubes of watercolor paint at an art supply store have the the same price. An artist has a coupon for $0.50 off each tube of
BlackZzzverrR [31]

Let us assume the regular price of each tube of paint = r.

0.50 off each tube.

New price of each tube = r - 0.50.

She buy 6 tubes.

Total price of 6 tubes = 6×(r-0.50).

We are given total price = $84.30 .

Therefore, we can setup an equation

6×(r-0.50) = 84.30.

Distributing 6 over (r-0.50), we get

6r - 3.0 = 84.30

Adding 3.0 on both sides, we get

6r - 3.0+3.0 = 84.30+3.0

6r = 87.30

Dividing both sides by 6, we get

6r/6 = 87.30/6

r = 14.55

<h3>Therefore, required equation is 6(r-0.50) = 84.30 and the regular price of each tube of paint is $14.55.</h3>
5 0
3 years ago
Help please fast!!!!!!!1
Marianna [84]

Answer:b

Step-by-step explanation: i thinks its b

4 0
3 years ago
A group walked 3/8 mile in 1/5 hour. Which is the groups walking speed in miles per hour
gogolik [260]

Answer:

The groups walking speed is 1\frac{7}{8}\frac{miles}{hour}  or 1.875\frac{miles}{hour}

Step-by-step explanation:

we know that

To find the speed divide the distance by the time

so

\frac{(3/8)}{(1/5)}=\frac{15}{8}\frac{miles}{hour}

Convert to mixed number

\frac{15}{8}=\frac{8}{8}+\frac{7}{8}=1\frac{7}{8}\frac{miles}{hour}

6 0
4 years ago
Is this proportional?<br> Questions answered: 60<br> Questions asked: 6
sineoko [7]
Brainly is a site used for help. There is no proportions for questions asked or answered. You may ask however many questions you want as long as they follow guidelines. We are all here to help you! :)

Even if the questions asked goes over the questions answered that is not a bad thing at all.

Hope this helped you. Have a great day!
4 0
4 years ago
Read 2 more answers
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