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meriva
2 years ago
12

John has a coupon for 20% off any

Mathematics
1 answer:
sattari [20]2 years ago
8 0

Answer:

$14.25

Step-by-step explanation:

20% of $15 is $0.75

$15 - $0.75 = $14.25

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1.
Alenkasestr [34]

All four choices are correct responses to the question.

7 0
3 years ago
Read 2 more answers
11t - 6t = 45 solve the equation and enter the value of t below ​
Arada [10]

Answer:

t = 9

Step-by-step explanation:

11t - 6t = 45

5t = 45

<h3>t =  \frac{45}{5}</h3>

t = 9

<h3>Hope it is helpful....</h3>
8 0
2 years ago
Read 2 more answers
A soccer ball is kicked from 3 feet above the ground. the height,h, in feet of the ball after t seconds is given by the function
dexar [7]
Here's our equation.

h=-16t+64t+3

We want to find out when it returns to ground level (h = 0)

To find this out, we can plug in 0 and solve for t.

0 = -16t+64t+3 \\ 16t-64t-3=0 \\ use\ the\ quadratic\ formula\ \frac{-b\±\sqrt{b^2-4ac}}{2a}  \\ \frac{-(-64)\±\sqrt{(-64)^2-4(16)(-3)}}{2*16}  = \frac{64\±\sqrt{4096+192}}{32}

= \frac{64\±\sqrt{4288}}{32} = \frac{64\±8\sqrt{67}}{32} = \frac{8\±\sqrt{67}}{4} = \boxed{\frac{8+\sqrt{67}}{4}\ or\ 2-\frac{\sqrt{67}}{4}}

So the ball will return to the ground at the positive value of \boxed{\frac{8+\sqrt{67}}{4}} seconds.

What about the vertex? Simple! Since all parabolas are symmetrical, we can just take the average between our two answers from above to find t at the vertex and then plug it in to find h!

\frac{1}2(\frac{8+\sqrt{67}}{4}+2-\frac{\sqrt{67}}{4}) = \frac{1}2(2+\frac{\sqrt{67}}{4}+2-\frac{\sqrt{67}}{4}) = \frac{1}2(4) = 2

h=-16t^2+64t+3 \\ h=-16(2)^2+64(2)+3 \\ \boxed{h=67}


8 0
3 years ago
Julie had $20.00 in her pocket. She spent $7.40. About what percent of her money does she still have?
posledela

63%


First, we have to take 20.00 - 7.40 which gets us 12.60.


Then, we use the formula where we put the 12.60 on top of a fraction bar, and the 20.00 on bottom.

We do 12.60 x 100 which makes 1260.


Lastly, we divide that by the 20.00 which gets us 63.


So, Julie has 63% of her money left.


I hope this helped!!!

4 0
8 months ago
APUG: P(1, -3), U(1, 1) and GC-3, 1). A dilation with a scale factor of 2 centered
Novay_Z [31]

Answer:

u

Step-by-step explanation:

4 0
3 years ago
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