3 years ago

In the box, type the number that correctly completes the sentence.

Mathematics

1 answer:

VLD [36.1K]3 years ago

6 0

He would receive $5.63, not including tax

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Help me please !!!! I need to make sure I am correct with my thinking

Lana71 [14]

1. Use the Pythagoras theorem
13^2 = x^2 + 5^2
solve for x and youll get the height of the roof.

2. let x = length of the rpoe)-

x^2 = 9^2 + 12^2

3. Pythagoras again
20^2 = x^2 + 12^2

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3 years ago

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You lose 5 points for every wrong answer in a trivia game. What integer represents the change in your points after answering 8 q

Inessa05 [86]

The answer to that is -40

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2 years ago

(2a - 3b + 5c) - (-3a - 7c)

ollegr [7]

Answer:

5a-3b+12c

Step-by-step explanation:

(2a - 3b + 5c) - (-3a - 7c)

Distribute the minus sign

2a -3b +5c +3a +7c

Combine like terms

5a-3b+12c

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2 years ago

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When knowing x how do you find y?

ludmilkaskok [199]

You need to divide y by x to get your answer

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2 years ago

Jay’s father is twice as old as Jay. In 20 years Jay will be two thirds as old as his father. Find the number

oksian1 [2.3K]

Let the age of Jay be x years, so age of Jay's father is 2x years .

After 20 years,

Jay's age will be $(x+20)years$

And Jay's father age will be $(2x+20) years$

But at that time, jay's age will be

$\frac{2}{3} (2x+20) years$

So we have

$x+20 = \frac{2}{3} (2x+20)$

Cross multiplication

$3(x+20) = 2(2x+20)
\\
3x+60 = 4x + 40
\\
60-40 = 4x-3x
\\
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Therefore Jay's age is 20 years and Jay's Father's age is 40 years .

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2 years ago

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