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andreev551 [17]
3 years ago
13

8+4= write the answer below

Mathematics
1 answer:
inna [77]3 years ago
4 0

Answer:

12

Step-by-step explanation:

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What is the answer to x2-49=0 (must show work)
ki77a [65]
2x-49=0

—> 2x=49

—> 2x 49
— = —
2 2

—> x=24.5
4 0
3 years ago
Read 2 more answers
I need help on 27 pleaseeeeeeeee
fomenos
27.) Because the area is 60, we know that the two side lengths, x and x + 4 will multiply to equal that.

In other words,
x(x+4) = 60

Distribute the x

x^2 + 4x = 60

Complete the square: 
1.) Take the middle term, 4, divide it by 2, then square it. You get 4 again.

2.) Add 4 on both sides of the equation:
x^2 + 4x + 4 = 64

3.) Factor the left side, you'll find that it is a perfect trinomial. 
(x + 2)(x + 2)= 64

4.) Simplify (x + 2)^2 = 64

5.) Square root both sides:
(x + 2) = +/- 8

Because side lengths cannot be negative, it must be positive 8.

6.) x + 2 = 8

7.) Subtract 2 on both sides, you'll see that x = 6 :)
3 0
4 years ago
1250 people visit a certain website every day. At this rate, how many visitors will the site receive in a week?
AleksAgata [21]

Answer:

8750 people

Step-by-step explanation:

1250 * 7   (7 days in a week)

8750 people

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

6 0
3 years ago
Select the correct answer.
Hitman42 [59]

Answer:

See explanation

Step-by-step explanation:

The question is incomplete, as the function is not given. So, I will make an assumption.

A quadratic function is represented as:

f(x) = ax^2 + bx + c

If a > 0, then the function has a minimum x value

E.g. f(x) = 4x^2 - 5x + 8 ------ 4 > 0

Else, then the function has a maximum x value

E.g. f(x)= -4x^2 -5x + 8 ---- -4 < 0

The maximum or minimum x value is calculated using:

x = -\frac{b}{2a}

For instance, the maximum of f(x)= -4x^2 -5x + 8 is:

x = -\frac{-5}{2*-4}

x = -\frac{5}{8}

So, the maximum of the function is:

f(x)= -4x^2 -5x + 8

f(-\frac{5}{8}) = -4 * (-\frac{5}{8})^2 - 5 *(-\frac{5}{8}) +8

f(-\frac{5}{8}) = 9.5625

8 0
3 years ago
Which number line represents this expression? -8 + 5
Serjik [45]

Answer:

Step-by-step explanation:

-3 is the number u will get. Hope this helps!!

7 0
4 years ago
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