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3 years ago

-5√112 I have to solve this using perfect square factors, is anyone familiar with those?

Mathematics

1 answer:

svp [43]3 years ago

5 0

Answer:

-20√7

Step-by-step explanation:

Here. we want to write this in the simpler form

we can have 112 as; 16 * 7

√112 = √(16*7)

√112 = 4 √7

so, we have

-5 * 4 √(7 = -20 √7

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In a four year period, about 80,000 acres of coastal wetlands in the United States are lost each year. What integer represents t

klemol [59]

Answer:

-320000

Step-by-step explanation:

Given

Lost Land = 80,000 acres yearly

Duration 4 years

Required

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Represent the total change with y;

y is calculated as thus;

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$y = -80,000 acres * 4$

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3 years ago

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3 years ago

If the area of a rectangle equals 30 cm² and the perimeter is equal to 26 cm. Find the length and width of the rectangle.

Kamila [148]

Answer:

Length = 10 & width = 3

Step-by-step explanation:

Perimeter = Length + Length + Width + Width

26 = 2Length + 2 Width

26 = 2 ( Length + Width )

13 = Length + width

13 - Length = Width EQUATION 1

Area = Length X Width

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30 = 13Length - Length ^2

Length ^2 - 13Length + 30 = 0

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8 0

1 year ago

The middle school choir concert was 1 1/4 hours long. each song was 1/,8 of an hour how many songs did the audience hear during

max2010maxim [7]

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6 0

3 years ago

Read 2 more answers

Which of the following is true for the interval from 3-5 seconds

kondaur [170]

Answer:

Option C

Step-by-step explanation:

The given function is: $h(t)=-16t^2+80t+108$ .

$h(5)=-16(5)^2+80(5)+108=108$ .

$h(3)=-16(3)^2+80(3)+108=204$ .

The average rate of change of this function on the interval t=3 to t=5 is given by:

$\frac{h(5)-h(3)}{5-3}$

$\frac{204-108}{2}=-48$

Since the average rate of change is negative on the interval 3-5 seconds, it means the ball is moving downwards at an average rate of 48 feet per second.

The correct choice is C.

6 0

3 years ago