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3 years ago

Someone please help! ATTACHMENT (just the circled one)

Mathematics

1 answer:

Elza [17]3 years ago

6 0

4 (3x+9)-3(5y+7) =11

distribute

12x +36 -15y -21 =11

12x -15y +15 =11

subtract 15 from each side

12x -15y =-4

subtract 12x from each side

-15y= - 12x-4

divide by -15

y = -12/-15 x -4/-15

y = 4/5 x + 4/15

slope = 4/5

y intercept = 4/15

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Solve for x. -1+14x 12+17

tino4ka555 [31]

Answer:

x=9

Step-by-step explanation:

These two angles are equal since they are alternate exterior angles

-1 +14x = 12x+17

Subtract 12x from each side

-1 +14x-12x = 12x-12x+17

-1+2x= 17

Add 1 to each side

-1+1+2x = 17+1

2x = 18

2x/2 = 18/2

x =9

8 0

3 years ago

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Tasya [4]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Solve (x + 5)2 = 48.

natita [175]

Answer:

x = -5 ±4sqrt(3)

Step-by-step explanation:

(x + 5)^2 = 48

Take the square root of each side

sqrt((x + 5)^2) = ±sqrt(48)

x+5 = ±sqrt(16*3)

x+5 = ±4sqrt(3)

Subtract 5 from each side

x = -5 ±4sqrt(3)

7 0

3 years ago

I am confused still, how would I do this?

White raven [17]

Answer:

yes, its a solution

Step-by-step explanation:

6(-2)+5(1)=-7

-12+5=-7 this is correct

2(-2)-4(1)=-8

-4-4=-8 this is also correct

8 0

3 years ago

What is the value of x? enter your answer in the box x=

xz_007 [3.2K]

Answer:

$x = 20$

Step-by-step explanation:

Given

The attached triangle

Required

Find x

The value of x will be found using the following equivalent ratios:

$11 : 121 = 10 : 5x + 10$

Convert to fraction

$\frac{11}{121} = \frac{10}{5x + 10}$

Factorize:

$\frac{11}{121} = \frac{5*2}{5(x + 2)}$

Simplify

$\frac{1}{11} = \frac{2}{x + 2}$

Cross Multiply

$1 * (x + 2) = 2 * 11$

$x + 2 = 22$

Collect Like Terms

$x = 22-2$

$x = 20$

4 0

2 years ago