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Anastaziya [24]
3 years ago
11

Explain why the equation (x-4)2-28=8

Mathematics
1 answer:
Alex17521 [72]3 years ago
8 0

Answer:

x=10 or x=-2

Step-by-step explanation:

add 28 to both sides

(x-4)^2=36

sqrt both sides

remember to get positive and negative roots

x-4=+/-6

add 4 to both sides

x=4+/-6

x=4+6 or x=4-6

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Can someone help me in this pretty please and asap!!! ;((
zepelin [54]

Answer:

(x -5)² + (y +4)² = 100 Should be the correct answer, hope this helps :)

Step-by-step explanation:

A circle centered at (h, k) with radius r will have equation ...

... (x -h)² + (y-k)² = r²

The point satisfies the equation for the circle. Filling in the given numbers, we have ...

... (x -5)² + (y+4)² = (-3-5)² + (2+4)² . . . . . . (h, k) = (5, -4), (x, y) = (-3, 2)

... (x -5)² + (y +4)² = 64 +36

6 0
3 years ago
Simplify the following expression 4x + 3t - 2x- 4
allochka39001 [22]

Answer:

2x + 3t - 4

Step-by-step explanation:

Hi,

To simplify the expression, we must combine like terms. To start, let's combine all of the x-values.

4x + 3t - 2x - 4

When we combine 4x and -2x we get 2x.

2x + 3t - 4

We can't combine anything else. They don't have the same variables and 4 doesn't even have a variable, so 2x + 3t -4 is the simplified expression.

I hope this helps :)

4 0
3 years ago
What is the answer for 7.5+2.3y-y
Alexxx [7]

Answer:

9.8

Step-by-step explanation:

7.5+2.3y-y

Subtract y

7.5+2.3

Then Add

9.8

7 0
3 years ago
Each tire on your bicycle has a diameter of 26 inches.About how far will you travel when the tires make on complete revolution?
ValentinkaMS [17]
Circumference of a circle is an equation

c = (pie) x d or ........ c = 2(pie) × r
c = 3.14 × d or ...... c = 2(3.14) x r

d is the diameter and r is radius


c = (3.14) x 26
c = 81.64 in.

6 0
3 years ago
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what is the value of a for the exponential function in the graph represented in the form of f(x)=a(b^x)? Zoom in the photo bcz i
nekit [7.7K]

Answer:

a = 3

Step-by-step explanation:

To determine the value of a, we want b^x to be 1, so that f(x) = a \times 1. Notice that if x = 0, then f(0) = a \times (b^0) = a, so the value of a is simply f(0). From the graph, it appears that f(0) = 3, so therefore a = 3.

4 0
3 years ago
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