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Kamila [148]
3 years ago
12

Please help with this question.

Mathematics
1 answer:
Rainbow [258]3 years ago
6 0

9514 1404 393

Answer:

  A:

  • x = (20√3)/3
  • y = (40√3)/3

Step-by-step explanation:

Side length ratios in a 30°-60°-90° "special" triangle are (shortest to longest):

  1 : √3 : 2

Comparing to the given side lengths, we have ...

  1 : √3 : 2 = x : 20 : y

Making these ratios the same gives ...

  x = 20/√3 = (20√3)/3

  y = 2x = (40√3)/3

These values match choice A.

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Chance has hired a construction crew to renovate his kitchen. They charge $3.55 per square foot for materials and $121.26 per da
Fantom [35]

The renovation took 14 days ⇒ answer A

Step-by-step explanation:

Chance has hired a construction crew to renovate his kitchen

  • They charge $3.55 per square foot for materials
  • They charge $121.26 per day of labor
  • Chance spent $2,450.24 on the renovation
  • The number of square feet is 198 more than the number of days it took for the renovation

We need to find for how long the renovation took

Assume that the renovation took x days

∵ The renovation took x days

∵ The number of square feet is 198 more than the number of days

∴ The number of square feet = x + 198

∵ They charge $3.55 per square foot

∵ They charge $121.26 per day of labor

∴ The cost of renovation = 3.55(x + 198) + 121.26(x)

- Simplify the expression

∴ The cost of renovation = 3.55 x + 702.9 + 121.26 x

- Add like terms

∴ The cost of renovation = 124.81 x + 702.9

∵ Chance spent $2,450.24 on the renovation

- Equate the cost of renovation by the money that Chance spent

 on the renovation

∴ 124.81 x + 702.9 = 2,450.24

- Subtract 702.9 from both sides

∴ 124.81 x = 1,747.34

- Divide both sides by 124.81

∴ x = 14

The renovation took 14 days

Learn more:

You can learn more about word problems in brainly.com/question/10557938

#LearnwithBrainly

3 0
3 years ago
2r+8>16-2r and 7r+21
jekas [21]

Answer:

First Equation answer: r > 2

Second Equation answer: 7 (r+3)

Step-by-step explanation:

First Equation Explanation: Move variable to the left side (2r + 2r + 8 > 16)

See the like terms (4r > 16-8)

Divide both sides by inequality of 4 (4r > 8) 4r----> r > 2

Second Equation Explanation: Factor out 7.

7 0
4 years ago
For every person who has the flu there are 6 people who have flu like symptoms of a doctor sees 40 patients determine approximat
strojnjashka [21]

for every 1 person that has the flu then 6 have flu like symptoms

if the doctor has 40 patients then lets guess and check

if 5 people have the flu then 30 have the flu like symptoms and that is 35 so no

and if 6 had the flu then there would be 36 people with flu like symptoms

so there should be from 30-36 people with ONLY flu like symptoms


6 0
4 years ago
PQ = 6x + 25 and QR = 16 - 3x find PR
kondor19780726 [428]
6x+25=16-3x
+3x. +3x
9x + 25= 16
-25. -25
9x=-9
x=-1
7 0
3 years ago
Which statement is not always true?
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Dilating a triangle by a scale factor greater than 1 results in a similar triangle with longer sides
6 0
3 years ago
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