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dangina [55]
2 years ago
11

(a−2b)^3 when a=−4 and b=−1\2

Mathematics
1 answer:
Inessa05 [86]2 years ago
6 0

Answer:

- 125

Step-by-step explanation:

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Ket [755]

Answer:

It should be cents

Step-by-step explanation:

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Mckenna ears money eat time she shovels snow for her neghbors
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4x-2y&lt;-2<br><br>a) (2,8) b) (0,1) c) (3,7) d) (5,8)​
amm1812

Answer:

a) (2, 8)  

Step-by-step explanation:

The easiest way is to insert the coordinates into the inequality.

a) (2, 8)

\begin{array}{rcl}4(2) - 2(8) & < & -2\\8 - 16 & < & -2\\-8 &< & -2\\\end{array}\\\textbf{TRUE}

b) (0, 1)

\begin{array}{rcl}4(0) - 2(1) & < & -2\\0 - 2 & < & -2\\-2 &< & -2\\\end{array}\\\text{False}

c) (3, 7)

\begin{array}{rcl}4(3) - 2(7) & < & -2\\12 - 14 & < & -2\\-2 &< & -2\\\end{array}\\\text{False}

d) (5, 8)

\begin{array}{rcl}4(5) - 2(8) & < & -2\\20 - 16 & < & -2\\4 &< & -2\\\end{array}\\\text{False}

You could also plot the inequality and test the points. You would get a graph like the one below. Point (2, 8) is the only one that satisfies the inequality. Points (0, 1) and (3, 7) do not satisfy the inequality because they are on a dashed line.

7 0
3 years ago
If -12-4(-2x)= 4 then what is x?
11111nata11111 [884]

Answer:

\boxed{\boxed{\sf x=2}}

Step-by-step explanation:

\sf -12-4\left(-2x\right)=\:4

First, let's remove parentheses:

\sf -12-4\times -2x=4

Simplify, multiply, 4 * -2x = -8x:

\sf -12-(-8x)=4

** Apply rule: - ( -a )= a

\sf 12+8x=4

Now, let's regroup terms

\sf 8x-12=4

Add 12 to both sides:

\sf -12+8x+12=4+12

Simplify, 4 + 12= 16

\sf 8x=16

Divide both sides by 8:

\sf \cfrac{8x}{8}=\cfrac{16}{8}

\sf x=2

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try using google with your voice

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