Use the Distributive Property to simplify -4(-a + 2)

Mathematics

2 answers:

Alina [70]3 years ago

7 0

Answer:

4a + -8

Step-by-step explanation:

You would do -4 x -a a negative times a negative is a positive so your answer for that is 4a. Then you would do -4 times 2 a negative times a positive equals a negative so you answer there would be -8. Hope this is the correct answer sorry if it isn't

marysya [2.9K]3 years ago

4 0

Answer:

4a-8

Step-by-step explanation:

(-4×a)+(-4×2)

Distributive property

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Which is NOT a solution to the inequality below? 3x + 13≥ -8

k0ka [10]

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3 years ago

I need desperate help PLEASE!!!

koban [17]

Answer:

OPTION B

OPTION D

Step-by-step explanation:

An element in the domain should be mapped to exactly one element on the co-domain. Also, every element in the domain should be mapped to an element in the co-domain.

These two conditions are satisfied to call a relation, a function.

Two different elements in the domain can be mapped to the same element in the co-domain. But the same element in the domain cannot be mapped to two different elements in the co-domain.

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C) {(2,3), (4,2), (4,6), (6,4)}

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3 years ago

An ellipse has a center at the origin, a vertex along the major axis at (10, 0), and a focus at (8, 0). Which equation represent

Alchen [17]

Check the picture below. So the ellipse looks more or less like so.

since the major axis is over the x-axis, is a horizontal ellipse, notice the "a" component length and the value for "c".

$\bf \textit{ellipse, horizontal major axis}
\\\\
\cfrac{(x- h)^2}{ a^2}+\cfrac{(y- k)^2}{ b^2}=1
\qquad 
\begin{cases}
center\ ( h, k)\\
vertices\ ( h\pm a, k)\\
c=\textit{distance from}\\
\qquad \textit{center to foci}\\
\qquad \sqrt{ a ^2- b ^2}
\end{cases}\\\\
-------------------------------$

$\bf \begin{cases}
h=0\\
k=0\\
a=10\\
c=8
\end{cases}\implies 8=\sqrt{a^2-b^2}\implies 8^2=a^2-b^2\implies b^2=10^2-8^2
\\\\\\
b=\sqrt{100-64}\implies b=6
\\\\\\
\cfrac{(x-0)^2}{10^2}+\cfrac{(y-0)^2}{6^2}=1\implies \cfrac{x^2}{100}+\cfrac{y^2}{36}=1$