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Vinil7 [7]
3 years ago
6

Complete the solution of the equation. Find the value of y when x equals -9

Mathematics
1 answer:
vredina [299]3 years ago
4 0

Answer:

-3

Step-by-step explanation:

x=-9

-7(-9) +8y =39

63+8y=39

-63       -63

8y=-24

8y/8 = -24/8  

y= -3

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A right triangle with side a being 7 and the hypotenuse is 8. Find the measure of the missing side length. Round your answer to
Virty [35]

Answer:

4

Step-by-step explanation:

use the Pythagoras' theorem

formula for an ABC triangle( right angled)

AB is height

BC is hypotenuse

CA is length

BC^{2} = AB^{2} + CA^{2}

in your case

AB is 7

BC is 8

CA is unknown so we write x

8^{2}=7^{2}+x^{2}

64=49+x^{2}

64-49=x^{2}

15=x^{2}

\sqrt{15} =x

3.87=x

4=x

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3 years ago
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3 years ago
(5/6)^4x=(36/25)^9-x, please help solve for x, and the 9-x is all superscript
stiks02 [169]
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Use:\\a^{-n}=\left(\frac{1}{a}\right)^n\\\\\left(a^n\right)^m=a^{n\cdot m}\\\\\left(\frac{a}{b} \right)^n=\frac{a^n}{b^n}
6 0
3 years ago
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klemol [59]

Answer:

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7 0
3 years ago
09:30 to 17:00 minus 30 minutes <br> How many hours is that ?
pentagon [3]

Answer:

7 hours

Step-by-step explanation:

9 : 30 to 17:00 = 7 hours 30 minutes

Minus 30 minutes = 7 hours

6 0
3 years ago
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