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2 years ago

What is (-2)4 times (-2)2 simplify

Mathematics

2 answers:

maw [93]2 years ago

4 0

(-2)4 * (-2)2

= 8 * 4

IrinaVladis [17]2 years ago

4 0

(-2)4 times (-2)28 times 4which would be 32,

HOPE THIS HELPS! ^_^

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Solve for x. round to the nearest hundredth if necessary.

iris [78.8K]

Answer: $x=11.47$

Step-by-step explanation:

Given the angle of 55 degrees, you know that the adjacent side is "x" and the length of the hypotenuse is 20.

Therefore, you need to remember the following identity:

$cos\alpha=\frac{adjacent}{hypotenuse}$

Then, knowing that:

$\alpha=55\°\\adjacent=x\\hypotenuse=20$

You need to substitute these values into $cos\alpha=\frac{adjacent}{hypotenuse}$ :

$cos(55\°)=\frac{x}{20}$

Now, you can solve for "x":

$20*cos(55\°)=x\\x=11.471$

Rounded to the nearest hundreth:

$x=11.47$

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2 years ago

7 t-shirts cost £67.55. How much do 11 t-shirts cost?

Oksanka [162]

Answer:

11 tshirts would cost £106.15

Step-by-step explanation:

67.55 divided by 7 = 9.65

9.65 x 11 = 106.15

Therefore the total would be £106.15.

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3 years ago

Read 2 more answers

Can someone help me with this

11Alexandr11 [23.1K]

-6 + x = -7

+6 +6 add 6 to both sides, 6's cancel out on the left.

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x = -1, is the answer.

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2 years ago

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The number of trees in a rainforest decreases each month by 0.5%. The forest currently has 2.5 billion trees. Which expression r

Blababa [14]

Answer:

$y=2.5*10^9(0.005^{12 0}) \\\\$

Step-by-step explanation:

The above question is in the form of an exponential decay. The equation for an exponential decay is given by:

$y=ab^x$

where y and x are variables, b < 1, a is the initial value of y (that is the value of y when x = 0).

Let y represent the number of trees left and x represent the number of months. Given that there is currently 2.5 billion trees, therefore a = 2.5 * 10⁹, b = 0.5% = 0.005. The equations becomes:

$y=2.5*10^9(0.005^x)\\\\After\ ten\ years(x=10*12\ months=120\ months):\\\\y=2.5*10^9(0.005^{12 0}) \\\\$

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2 years ago

Yutaka enjoys running. For every kilometer he runs, he burns 65 calories. He wrote this equation to find how many calories he bu

koban [17]

Answer:

(k): 65k=c is true per kilometer he runs,

Step-by-step explanation:

(k): 65k=c is true if Yutaka was to walk and burn only 48 calories then k then is x= walk and y = run 8x+7y>= c 8x+7y>= 8(48) + 7(65) >= 839

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1 year ago