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2 years ago

What is the solution to the system of equations graphed below

1 answer:

8 0

$\underline{+\left\{\begin{array}{ccc}y=-x-1\\y=x+1\end{array}\right}\ \ \ \ |\text{add both sides}\\\\.\ \ \ \ \ 2y=0\ \ \ |:2\\.\ \ \ \ \ y=0\\\\\text{substitute the value of y to the second equation}\\\\0=x+1\ \ \ \ |-1\\x=-1\\\\Answer:\ A.\ (-1,\ 0)$

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Factor Trinomials:

notka56 [123]

Answer:

1. $2(x+2)(x+5)$

2. $8(x+4)^{2}$

Step-by-step explanation:

Problem #1:

1. Find the GCF (Greatest Common Factor)

$GCF = 2$

2. Factor out the GCF and simplify.

$2(x^{2} +7x+10)$

3. Factor $x^{2} +7x+10$

Which two numbers add up to 7 and multiply to 10?

2 and 5

Rewrite the expression using the above.

$(x+2)(x+5)$

4. Done!

$2(x+2)(x+5)$

Problem #2:

1. Find the GCF (Greatest Common Factor)

$GCF=8$

2. Factor out the GCF and simplify.

$8(x^{2} +8x+16)$

3. Use the perfect square formula. $a^{2} +2ab+b^{2} =(a+b)^{2}$

$a = x\\b=4$

$(x+4)^{2}$

4. Done!

$8(x+4)^{2}$

8 0

2 years ago

Will mark Brainlest if you just give me the right answer

lesya692 [45]

Answer:

Elon Musk

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2 years ago

A book sold 35400 copies in its first month of release. Suppose this represent 9.7 % of the number of copies sold to date. How m

Nata [24]

Answer:

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Step-by-step explanation:

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2 years ago

Convert 0.00049 to scientific Notation

BartSMP [9]

I think its 4.9 x 10-4

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2 years ago

Read 2 more answers

Kelly reads x hours a week. Tim reads two times more than Kelly and Jim reads five hours more than Tim. Which expression relates

In-s [12.5K]

Answer:

C. 2x + 5

Step-by-step explanation:

Kelly: x

Tim: 2 × x = 2x

Jim: 2x + 5

hope it helps :)

4 0

2 years ago