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4 years ago

What's the answer ????

Mathematics

1 answer:

gizmo_the_mogwai [7]4 years ago

5 0

The mistake is line 4, she should have divided 42 by 5, not add 5 and 16

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4x4 + 32x - 28 = 0<br> whats the answer to this

Stells [14]

Answer:

Step-by-step explanation:

4x4 + 32x - 28 = 0

5 0

3 years ago

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Is it a function?<br> (-2, 2), (-1,2), (0, 2), (1.0), (2,0)

alex41 [277]

Answer:

yes

Step-by-step explanation:

nothing in the x is repeating

4 0

3 years ago

So i have to do integer math and Im not really good at it

Advocard [28]

Answer:

-25, 22, -65, 0

Step-by-step explanation:

7 0

3 years ago

IXL 7th grade math could someone please help!

KIM [24]

Answer:

supplementary angles are two angles that when add equal 180 degrees.

The supplement of an angle is 180 - n.

Step-by-step explanation:

n = 17(180 - n)

n = 3060 - 17n

n + 17n = 3060

18n = 3060

n = 3060/18

n = 170

so the unknown angle (n) = 170 degrees and its supplement = (180 - 170 = 10)......= 10 degrees.

7 0

3 years ago

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Give all solutions if the nonlinear system of equations, including those with no real complex components.

konstantin123 [22]

$\left\{\begin{array}{ccc}y=x^2+6x\\4x-y=-24\end{array}\right\\\\substitute:\\\\4x-(x^2+6x)=-24\\\\4x-x^2-6x+24=0\\\\-x^2-2x+24=0\\\\a=-1;\ b=-2;\ c=24\\\\\Delta=b^2-4ac$

$\Delta=(-2)^2-4\cdot(-1)\cdot24=4+96=100\\\\x_1=\frac{-b-\sqrt\Delta}{2a};\ x_2=\frac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{100}=10\\\\x_1=\frac{2-10}{2\cdot(-1)}=\frac{-8}{-2}=4;\ x_2=\frac{2+10}{2\cdot(-1)}=\frac{12}{-2}=-6\\\\y_1=4^2+6\cdot4=16+24=40;\ y_2=(-6)^2+6\cdot(-6)=36-36=0\\\\Answer:\\x=4\ and\ y=40\ or\ x=-6\ and\ y=0$

4 0

3 years ago

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