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Andrews [41]
3 years ago
12

-4 (-2)+3 (4)+3 (-4)-5 (4)

Mathematics
1 answer:
Alex787 [66]3 years ago
4 0
Due to PEMDAS, you want to start with multiplying the parenthesis. I will group it first so that you can see the grouping easier.

-4(-2) + 3(4) + 3(-4) - 5(4)

Now we multiply the terms together.

-8 + 12 - 12 - 20

As you can see above, there is a positive 12 and a negative 12. These two will cancel out, leaving you with:

-8 - 20

Now you just combine the terms.

This results in a final answer of -28!
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dezoksy [38]

Answer:

t = [0.493,4.2]

Step-by-step explanation:

The height of the rocket straight up into the air is given by :

h(t)=-16t^2+85t+5

We need to find the interval the rocket be at least 43 feet above the ground.

43\ge -16t^2+85t+5\\\\t\ge 0.493\ and\ t\le 4.82\ s

So, the required interval during which the rocket is at least 43 feet above the ground is [0.493,4.2].

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sleet_krkn [62]

Answer:

85

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topjm [15]
Where’s the question?
8 0
3 years ago
I) Construct a triangle PQR such that |PQ|=8cm,{RPQ=90°{PQR=30°.Measure |RQ|​
scoray [572]

Answer:

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