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ipn [44]
2 years ago
8

Find the value of each variable. For the circle, the dot represents the center

Mathematics
1 answer:
castortr0y [4]2 years ago
3 0

A= 2.5

B= 7.9

C=2.0

D=1.6

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Y=2x^2+12x+14 in vertex form
balandron [24]

Answer:

y = 2(x + 3)² - 4

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

Using the method of completing the square

y = 2x² + 12x + 14 ← factor out 2 from the first 2 terms

  = 2(x² + 6x) + 14

To complete the square

add/subtract ( half the coefficient of the x- term)² to x² + 6x

y = 2(x² + 2(3)x + 9 - 9 ) + 14

  = 2(x + 3)² - 18 + 14

  = 2(x + 3)² - 4 ← in vertex form

4 0
3 years ago
Suppose that in a normal half hour of practice, a tennis player expends 280 calories of energy.
sertanlavr [38]

Answer:

308 Calories

Step-by-step explanation:

So we start off with 280 as usual, but I will focus on the percent. The given percent is 110% "effort". What we would need to do here is, Firstly, change the percent into a decimal, and this is done by moving the decimal spot of 110%. What I mean is that 110.% and you move that little period over 2 times to the left and also remove the percent as for now because we will not need it. After that you would get 1.10. This is what we will multiply by. So if we did 280x1.10 it equals 308, and that is how I got 308

Hope this helps!

4 0
2 years ago
A train travels 75 miles in 55 minutes what is the average speed in miles per minute
nekit [7.7K]

Answer:

1.36 miles per min

Step-by-step explanation:

5 0
3 years ago
Please help me!!!!!!!!!!!
lbvjy [14]

Answer:I think its C but im not sure

6 0
2 years ago
136゚ is the same as ___ radians<br> Round to the nearest hundredth of a radian
Crazy boy [7]

to change from degrees to radians

multiply by pi/180

136 * pi/180 = 136/180 * pi

now simplify

34/45 * pi

.755556 * pi    pi=3.14159

2.373648

to the nearest hundredth

2.37 radians

8 0
3 years ago
Read 2 more answers
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