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3 years ago

Please awnser photo will give brain if you are first

Mathematics

1 answer:

nika2105 [10]3 years ago

6 0

Answer:

THE SECOND ONE

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PLEASE SOLVE AND CHECK. SHOW COMPLETE SOLUTION

Alex17521 [72]

Solution:

$\sqrt{4x + 13} = x + 2$

First square both sides.

$= > ( \sqrt{4x + 13} ) ^{2} = (x + 2) ^{2}$

Now, square root and square gets cancel out in the LHS. And in the RHS, apply the identity: (a + b)² = a² + 2ab + b².

$= > 4x + 13 = {(x)}^{2} + 2 \times x \times 2 + (2) ^{2} \\ = > 4x + 13 = {x}^{2} + 4x + 4$

Now, transpose 4x and 4 to LHS.

$= > 4x - 4x + 13 - 4 = {x}^{2} \\$

Now, do the addition and subtraction.

$= > {x}^{2} = 9 \\ = > x = \sqrt{9} \\ = > x = ±3$

Answer:

x = ± 3

Hope you could understand.

If you have any query, feel free to ask.

3 0

2 years ago

Hi!!!! please help me!!!!!! i am struggling with this problem

sammy [17]

Answer:

Step-by-step explanation:

3 0

3 years ago

For f(x) = 3x +1 and g(x) = x - 6, find (f- g)(x).

Finger [1]

Answer:

c. -x + 3x + 7 = 2x+7

Step-by-step explanation:

f(x) = 3x +1 and g(x) = x - 6

f-g = 3x +1 - ( x - 6)

Distribute the minus sign

= 3x+1 - x+6

= 2x +7

4 0

3 years ago

What does this equal tox= -9

Len [333]

I'm guessing you mean which equation Equals -9

In each equation you are needing to get rid of X so you divide on both sides

A) -45=5x

-45/5=x
-9=x

and I double checked to make sure nothing else equaled -9 so Your answer Is A

Hope this helped!

4 0

3 years ago

One hundred twenty-three and thirty hundreths. in decimal form

Doss [256]

Answer:

123.030

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers