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Katyanochek1 [597]

3 years ago

13

Noah bought 15 baseball cards for $9.00. Assuming that each baseball card costs the same amount, answer the following questions.

How much will 30 baseball cards cost?

1 answer:

STatiana [176]3 years ago

5 0

Answer:

270 dollars

Step-by-step explanation:

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Cylinder A has radius r, height h, and a volume of 10pi cubic units. Cylinder B has twice the radius and twice the height.

viva [34]

Answer:

Step-by-step explanation:

10 = r²h

(2r)²(2h) = 16r²h

volume of B is 1.6 times the volume of A

4 0

3 years ago

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4 to the fourth negative power multiplied by four to the fifth power

Alex Ar [27]

Simplify the following:4^5/4^4
Combine powers. 4^5/4^4 = 4^(5 - 4):4^(5 - 4)
5 - 4 = 1:Answer: 4

3 0

3 years ago

two trains leaves stations 320miles apart at the same time and travel toward eachother. One train travels at 110 miles per hour

I am Lyosha [343]

x/110 = (320-x)/90

<span> Cross multiply</span>

90x = 35200-110x

200x=35200

X = 35200/200 = 176 (distance traveled by train going 110 mph

176/110 = 1.6 hours = 1 hour and 36 minutes

Check: 110*1.6 = 176, 90*1.6 = 144

176+144 = 320

it will take 1.6 hours ( 1 hour 36 minutes) for the trains to meet

4 0

3 years ago

How could you find 3/8% of 800

Damm [24]

Well 3/8 is .375 but times 100 is 37.5%
Then 37.5% of 800 is 300

7 0

3 years ago

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A circle inside of a square. The circle touches all sides of the square. The base is 5 centimeters.

lina2011 [118]

Answer:

19.6 cm²

Step-by-step explanation:

If a circle fits perfectly inside of a square, then its diameter is equal to the length of sides of the square.

The area of a circle is given by:

$A= \pi \frac{d^2}{4}$

In this problem, d = 5 cm, the area of the circle is:

$A= 3.14 *\frac{5^2}{4} \\A=19.6\ cm^2$

The approximate area of the circle is 19.6 cm².

8 0

3 years ago