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kirill [66]
4 years ago
7

Write an equation for each problem. The square of a number is 8 more than twice the number.

Mathematics
1 answer:
avanturin [10]4 years ago
3 0

Answer:

The equation is equal to

x^{2}=2x+8

Step-by-step explanation:

Let

x -----> the number

we know that

The equation that represented the problem is equal to

x^{2}=2x+8

x^{2}-2x-8=0

Solve the quadratic equation by graphing

The solution are x=-2 and x=4

see the attached figure

therefore

The number can be -2 or 4

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Step-by-step explanation:

5 0
3 years ago
Ne serving of ice cream has 140 calories and a mass of 60 grams.
Paha777 [63]

Answer:

35 Calories

Step-by-step explanation:

15 is 1/4 of 60

60/15 = 4

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Since 15 is 1/4 the size of 60, the number of calories will be 1/4 the amount as well. That is why you divide 140 by 4 to find the total calories for the mass of 15.

4 0
3 years ago
What are the domain and<br> range of the function below?
Olin [163]

Answer:

2nd answer option

Step-by-step explanation:

the domain is the interval or set of valid x values. the range is the same for valid y values.

so, what is the smallest x value we see in the functional graph ?

x = 0

there is no functional value for any x smaller than that.

and then the function goes on and on to the right in all eternity. that means it goes to infinity.

so, domain = [0, infinity)

please consider the round bracket at the end, because "infinity" is not a number.

now for the range and the y values.

in this case I start to ask for the largest y value.

y = 4

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but it goes down and down in all eternity, going also to infinity, but -infinity (down is negative for y).

so, the range = (-infinity, 4]

"-infinity" is also not a number and therefore not included (hence the round bracket).

5 0
2 years ago
2x+6=x-4<br> Solve this equation
Effectus [21]

The solution and answer are well written in the Pic above.

7 0
3 years ago
Read 2 more answers
If a bullentin board is 6 ft wide and 4 ft tall. what are the deminsions inside
SOVA2 [1]
If you are looking for the area the answer would be 24 ft. tall because 6*4 is 24
6 0
4 years ago
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