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Georgia [21]
3 years ago
8

I will give brainliest if right!!!!!!!!

Mathematics
2 answers:
Readme [11.4K]3 years ago
3 0

Answer:

the last one

Step-by-step explanation:

because yes, thank you and bye

MatroZZZ [7]3 years ago
3 0

Answer:

The answer is the last one

Step-by-step explanation:

no explanation needed

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Use the completing the square method to find the roots of 2x^2+3x-15=13 include the steps, it would be greatly appreciated thank
ValentinkaMS [17]

Answer:

The roots are

x1= \frac{-3+\sqrt{233}}{4}

x2= \frac{-3-\sqrt{233}}{4}

Step-by-step explanation:

we have

2x^{2}+3x-15=13

so

Group terms that contain the same variable, and move the constant to the opposite side of the equation

2x^{2}+3x=13+15

2x^{2}+3x=28

Factor the leading coefficient  

2(x^{2}+(3/2)x)=28

Complete the square. Remember to balance the equation by adding the same constants to each side

2(x^{2}+(3/2)x+(9/16))=28+(9/8)

2(x^{2}+(3/2)x+(9/16))=233/8

(x^{2}+(3/2)x+(9/16))=233/16

Rewrite as perfect squares

(x+(3/4))^{2}=233/16

square root both sides

(x+\frac{3}{4})=(+/-)\sqrt{\frac{233}{16}}\\ \\(x+\frac{3}{4})=(+/-)\frac{\sqrt{233}}{4}\\ \\x= -\frac{3}{4}(+/-)\frac{\sqrt{233}}{4}

x1= -\frac{3}{4}(+)\frac{\sqrt{233}}{4}=\frac{-3+\sqrt{233}}{4}

x2= -\frac{3}{4}(-)\frac{\sqrt{233}}{4}=\frac{-3-\sqrt{233}}{4}

6 0
3 years ago
Find the (f of f) (0) f(x)=3x-2
alina1380 [7]
First write (f o f)(x).  This calls for us to use f(x) = 3x-2 as the input to f(x).

f(x) = 3x - 2       =>   f(   )  = 3(    ) - 2         Now subst. f(x) inside both sets of parentheses:

f(f(x)) (f o g)(x) = 3(3x-2) -2 = 9x - 6 - 2 = 9x - 8 (answer)
3 0
4 years ago
Helpp!!! i'm having alot of trouble with this
lord [1]

120 cubic feet is the answer.

7 0
3 years ago
Please help me with this question :)​
RSB [31]

Answer:

\dashrightarrow \: { \tt{4x + 4 \leqslant 9x + 8}} \\  \\ \dashrightarrow \: { \tt{4x - 9x \leqslant 8 - 4}} \\  \\ \dashrightarrow \: { \tt{ - 5x \leqslant  4}}

• divide either sides of the inequality by -5, also the sign will change:

\dashrightarrow \: { \tt{x \geqslant  -  \frac{4}{5} }} \\

3 0
3 years ago
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Please look at the pic and help im desperate
SCORPION-xisa [38]

Answer:

c

Step-by-step explanation:

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3 years ago
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