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Anna35 [415]
3 years ago
14

The area of a square is 4x^2+28x+49. What expression represents the length of each side of the square?

Mathematics
1 answer:
kipiarov [429]3 years ago
7 0

Answer:4x^2 +28x +49=(2x +7)^2

Step-by-step explanation:

a2±2ab+b2=(a±b)2

In this case

a=2x and b=7 ...

4x2+28x+49=(2x)2+(2⋅

(2x)⋅

7)+72=(2x+7)2

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The amplitude of y = -3sinx is _____.
pishuonlain [190]

Answer:

The amplitude is 3.

Step-by-step explanation:

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2 years ago
Two companies rent boats by the hour. The total cost, in dollars, c, depends on the number of hours, h.
Maurinko [17]

Answer:

A(35)

B(35_20=15

Step-by-step explanation:

same as all above

3 0
2 years ago
There are 12 bags in a box of popcorn that cost $8.25. Find the unit rate for ONE bag of popcorn. Round to the hundredths place.
goldfiish [28.3K]

Answer:

$0.69 for each bag

Step-by-step explanation:

Since you have 12 bags for $8.25, that means you need to divide the price by the number of bags to get the price of each:

\frac{8.25}{12}  = 0.6875

You then need to round to the nearest hundredths.  Since the number after the hundredths place is a 7, which is greater than or equal to 5, you need to add 1 to the hundredths place making the final answer $0.69

7 0
3 years ago
I NEED HELP ASAP!!<br> like right now plz I will do anything
shepuryov [24]

Answer:

Number 5. = 69

Number 8. = 19

Step-by-step explanation:

3 0
2 years ago
What is the equation of a line that contains point (4, –3) and is PARALLEL to –4x + y = 7?
Debora [2.8K]

Answer:

Step-by-step explanation:

First, put -4x+y=7 into y=mx+b format

move -4x to the other side (or add 4x on both sides)

y=4x+7

now, parallel lines have the same slopes, but not the same y intercepts.

So, you already know the slope of your new line

y=4x+b

now we need to find b (y intercept)

take the point (4,-3) and put it into the equation above

-3=4(4)+b

-3=16+b

move 16 to the other side (or subtract 16)

-19=b

therefore the new line will be y=4x-19

Hope this helps!

7 0
2 years ago
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