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noname [10]
3 years ago
7

Sarah buys a book for her

Mathematics
2 answers:
Vikentia [17]3 years ago
7 0

Answer:

21.42

Step-by-step explanation:

Rudiy273 years ago
7 0

Answer: $21.42

Step-by-step explanation:

First we must REDUCE the price by 15%.

But what is 15% of $24.00?

Well:

24 × .15 = 3.6

15% off of $24.00 means $3.60 off of $24.00

$24.00 - $3.60 = $20.40

The book is $20.40 on sale.

Next we must ADD 5% sales tax.

But what is 5% of $20.40?

Well:

20.4 × .05 = 1.02

$1.02 is 5% of $20.40

$20.40 + $1.02 = $21.42

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Y= -(x-1)^2+1<br><br><br>please helppppp​
Readme [11.4K]

Answer:x:

y=-5/4

Step-by-step explanation:

Vertex (1,-1)

focus(1,-3/4)

Axis of symmetry(X=1)

8 0
3 years ago
Read 2 more answers
A cone with radius 2 and height 9 has its radius tripled. How many times greater is the volume of the larger cone than the small
SpyIntel [72]

Answer:

When increasing the radius 3 times the volume increases 9 times and when it is reduced to a third the volume decreases 9 times

Step-by-step explanation:

We have that the formula for the volume of a cone is:

Vc = pi * (r ^ 2) * h

We first calculate the original volume, where the radius is 2 and the height is 9, replacing:

Vc = 3.14 * (2 ^ 2) * 9

Vc = 113.04

Now if the radius is tripled it would be: 2 * 3 = 6, the radius would be 6, replacing:

Vc = 3.14 * (6 ^ 2) * 9

Vc = 1017.36

If we compare:

1017.36 / 113.04 = 9

This means that when the radius is tripled, the volume increases 9 times.

When if re reduces to a third the radius would be: 2/3, replacing:

Vc = 3.14 * ((2/3) ^ 2) * 9

Vc = 12.56

113.04 / 12.56 = 9

Which means that by reducing it to a third the volume becomes 9 times smaller.

6 0
3 years ago
Somebody help please
Troyanec [42]
3.) Are bike helmets always  necessary <span>for people to wear?
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5 0
3 years ago
20) If a quadratic equation cannot be factored then
PolarNik [594]

Answer:

?

Step-by-step explanation:

I'm confused, what are you asking?

7 0
4 years ago
Amy drove to her mother’s house, which is 204 miles away. If it took her 3 hours, what was her average speed?
Y_Kistochka [10]

Answer:

68 mph

Step-by-step explanation:

204/3=68 mph

4 0
3 years ago
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