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meriva
3 years ago
9

Y is between X and Z. XY = 1/5XZ. YZ = 20. Find XY and XZ

Mathematics
1 answer:
satela [25.4K]3 years ago
3 0

Answer:

<u>XZ = 25</u>

<u>X</u><u>Y = 5</u>

Step-by-step explanation:

XZ = XY + YZ

XZ = (1/5XZ) + 20

XZ - (1/5XZ )= 20

4/5 XZ = 20

5/5 XZ = (20 ÷ 4) × 5

XZ = <u>25</u>

XY = 1/5 × 25

= <u>5</u>

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The sum of three numbers is 24. the largest number is three times the smallest, and the middle number is four less than the larg
tensa zangetsu [6.8K]
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mid number = 3X-4
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6 0
3 years ago
If n =270 and (p-hat) =0.43, find the margin of error at a 99% confidence level.. give answer to 3 decimals
Troyanec [42]

Answer:

0.078

Step-by-step explanation:

Margin of error = z√(p(1-p)/n)

Given

p-hat = 0.43

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Substitute

MOE = 2.576√0.43(1-0.43)/270

MOE = 2.576√0.43*0.57/270

MOE = 2.576√0.2451/270

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7 0
3 years ago
A tree was 5 feet tall. One year later, the tree was 13 feet tall. Write an equation and use mental math to find how many feet f
swat32
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7 0
3 years ago
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tiny-mole [99]

Answer:

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Step-by-step explanation:

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we can devide or multiply in an equation by any number we want, as long as we do it to every term.

6 0
3 years ago
Read 2 more answers
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