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3 years ago

5

Which expression is equivalent to (9×8)^4

2 answers:

lisov135 [29]3 years ago

8 0

Answer:

72^4=26873856

Step-by-step explanation:

Romashka [77]3 years ago

7 0

Answer:

(8x9)^4

Step-by-step explanation: i am 99% sure

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Find the measure of angle A

Mariana [72]

Apply the law of cosines. and solve for A

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3 years ago

Write a quadratic function, in standard form, that fits the set of points. Solve it as a system of three equations. (-4, 9), (0,

Tresset [83]

Answer:

$\boxed{y=2x^2+4x-7}$

Step-by-step explanation:

Let the quadratic function be

$y=ax^2+bx+c$

We substitute $(-4,9)$ into the equation to obtain;

$9=a(-4)^2+b(-4)+c$

$\Rightarrow 9=16a-4b+c---(1)$

We substitute $(0,-7)$ to obtain;

$-7=a(0)^2+b(0)^2+c$

$\Rightarrow c=-7---(2)$

We finally substitute $(1,-1)$ to obtain;

$-1=a(1)^2+b(1)^2+c$

$\Rightarrow -1=a+b+c---(3)$

We put equation (2) into equation (1) to get;

$9=16a-4b-7$

$16a-4b=16$

$\Rightarrow 4a-b=4---(4)$

$\Rightarrow -1=a+b-7$

$\Rightarrow a+b=6---(5)$

We add equation (4) and (5) to get;

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We put $a=2$ into equation (5) to get;

$2+b=6$

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The reqiured quadratic function is

$y=2x^2+4x-7$

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3 years ago

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The perimeter is 38.4 inches

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andreev551 [17]

Answer:

X=-1/2

Step-by-step explanation:

Hope this helps. Plz give brainliest.

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