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dsp73
3 years ago
7

Expand the square (x + 4)2

Mathematics
1 answer:
Annette [7]3 years ago
8 0
(x+4)^2
Expanded it is (x+4)(x+4)

To solve you need to distribute.
So x^2 +4x +4x +16
Then combine like terms..
x^2 +8x +16
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Can someone solve this
zysi [14]
You know how Soh Cah Toa applies to right triangles; you can assign the adjacent side = 4 and hypotenuse = 7

CosФ = (adjacent) / (hypotenuse)

Then with the Pythagorean theorem
4² + b² = 7²
16 + b² = 49
b² = 49 - 16
b² = 33
b = √(33)

So "b" is the opposite side.

SinФ = (opposite) / (hypotenuse) = √(33)/7
TanФ = (opposite) / (adjacent) = √(33)/4
3 0
3 years ago
The graph of function f is shown below. Find f(-4)
NNADVOKAT [17]

Answer:

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8 0
2 years ago
Which set of ordered pairs can be used to graph y=x−2. <br><br> Will give you brainliest.
Ann [662]

Answer:

y =-2 x=0

Step-by-step explanation:

put any number on x to find y

4 0
3 years ago
Alex buys 2 1/2 pounds of grapes. He buys 1 1/4 times as many pounds of apples as grapes. How many pounds of apples does he buy?
galina1969 [7]
Given:
grapes = 2 1/2 pounds
apples = 1 1/4 times as many pounds as grapes.

For easier computation, let us convert these fractions into numbers with decimal places.

2 1/2 pounds = 2.50 pounds
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Apples = 2.50 pounds * 1.25 = 3.125 pounds of apples.

Or we still use fractions. We need to convert the mixed fractions into improper fractions.

2 1/2 = 5/2
1 1/4 = 5/4

5/2 * 5/4 = 5*5 / 2*4 = 25/8 is simplified to 3 1/8 pounds
3 0
3 years ago
The formula for the surface area of a cylinder with radius r and height h is at times twice the product of the
MrMuchimi

Answer:

<em>2\pi \: rh + 2\pi {r}^{2}  = 2(t \times  {r}^{2} )</em>

Step-by-step explanation:

The TSA of the cylinder

2\pi \: rh + 2\pi {r}^{2}

In Mathematics, 'is' is =

Twice means 2( )

Product means ×

So we have

2\pi \: rh + 2\pi {r}^{2}  = 2(t \times  {r}^{2} )

as the answer.

6 0
3 years ago
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