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Scilla [17]
3 years ago
6

Given the equation below, if x = 4, what is the value of y? y=14x

Mathematics
1 answer:
Lina20 [59]3 years ago
8 0

Answer:

the answer would be 56.

y=14(4)

y=56

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A store has a outfit that is $35.00 and 50% of what is the price now.
natta225 [31]

Answer:

  • $70

Step-by-step explanation:

The price is x

50% of the price is $35

  • x*0.5 = 35
  • x = 35/0.5
  • x = 70

Answer is $70

7 0
3 years ago
Read 2 more answers
find an equation in the form y=ax^2+bx+c for the parabola passing through the points. (2,28),(4,116),(-3,88)
IgorC [24]
<h3>Answer:</h3>

y = 8x² -4x +4

<h3>Explanation:</h3>

I find it quick and easy to let a graphing calculator do quadratic regression on the given points. It gives the coefficients of the equation directly. (See attached.)

_____

If you want to do this "by hand," you can substitute each of the x and y value pairs into the equation to get three linear equations in a, b, and c. These are generally easy to solve, as the "c" variable can be eliminated right away.

<em>For x = 2</em>

... 28 = a·2² +b·2 +c = 4a +2b +c

<em>For x = 4</em>

... 116 = a·4² +4b +c = 16a +4b +c

<em>For x = -3</em>

... 88 = a·(-3)² +b·(-3) +c = 9a -3b +c

Subtracting the first and third equations from the second, we have ...

... (16a +4b +c) -(4a +2b +c) = (116) -(28) ⇒ 12a +2b = 88

... (16a +4b +c) -(9a -3b +c) = (116) -(88) ⇒ 7a +7b = 28

Dividing the first of these reduced equations by 2, and the second by 7, we have ...

  • 6a +b = 44
  • a +b = 4

Subtracting the second of these from the first gives ...

... (6a +b) -(a +b) = (44) -(4) ⇒ 5a = 40

From which we find

... a = 8

... b = 4 -a = 4 -8 = -4

We choose the first of the original equations to find c:

... c = 28 -4a -2b = 28 -4·8 -2(-4)

... = 28 -32 +8 = 4

With (a, b, c) = (8, -4, 4), the equation of the parabola is ...

... y = 8x² -4x +4

5 0
3 years ago
Use the Remainder Theorem to determine which of the following is a factor of p(x) = x 3 - 2x 2 - 5x + 6.
Reika [66]
If x + 1 is a factor then f(-1) will = zero.

f(-1) =  8  so its not answer a).

f(3)  = 0   so the answer is x - 3

Its c.
3 0
3 years ago
Read 2 more answers
If 11 runners are participating in a race, how many different ways can there be first and second place runners?
MrRa [10]
Only <span>first and second place runners:
</span>11*10=110 ways

Hope that helped.
6 0
3 years ago
The start of the hike, a hiker was at -50 below sea level and climbs a rate of 15 feet per minute
Helen [10]

Answer:

B. -50+15t>5

Step-by-step explanation:

Because the hiker climbs at a rate of 15 feet per minute, the hiker will climb 15t feet in t minutes. Therefore, -50 + 15t would represent where the hiker would be after t minutes. According to the problem, -50 + 15t is greater than 5

4 0
3 years ago
Read 2 more answers
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