4 years ago

Can anyone do this question?

Mathematics

1 answer:

kari74 [83]4 years ago

7 0

Answer:

its simple 5.90

Step-by-step explanation:

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How substation y=3x-7 <br> 2y+4x=36

SSSSS [86.1K]

The solution is:

x = 5

y = 8

Step-by-step explanation:

Given equations are:

$y=3x-7\ \ \ Eqn\ 1\\2y+4y = 36\ \ \ Eqn\ 2$

Putting y = 3x-7 in equation 2

$2(3x-7)+4x = 36\\6x-14+4x = 36\\10x-14 = 36\\10x = 36+14\\10x = 50$

Dividing both sides by 10

$\frac{10x}{10} = \frac{50}{10}\\x = 5$

Putting x=5 in eqn 1

$y = 3(5)-7\\= 15-7 = 8$

Hence,

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Keywords: Linear equation, substitution method

Learn more about linear equation at:

#LearnwithBrainly

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3 years ago

The radius of a sphere is 6 inches. Find the length of a chord connecting two perpendicular radii.

Sever21 [200]

Answer:

6√2.

Step-by-step explanation:

The two radii are equal length and form a right angle, so the resulting triangle is 45-45-90. Therefore, the length of the chord (the hypotenuse of the triangle) is 6√2.

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4 years ago

Calculate the slope between points (-1,1) and (5,-2)

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The answer is -0.5 or -1/2

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3 years ago

Please Hurry!!!!<br><br> Find f(-5) if f(x) = 5x + 11.

Naya [18.7K]

Answer:

-14

Step-by-step explanation:

f(-5)=5(-5)+11

f(-5)= -25+11

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3 years ago

Can anyone do this question? ​

Can anyone do this question?