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gulaghasi [49]
3 years ago
14

A stack of 39 pennies is exactly as tall as a stack of 31

Mathematics
2 answers:
zysi [14]3 years ago
8 0

Answer:

No, they don't

Step-by-step explanation:

Two cylinders are formed. The volume of a cylinder takes into account its height and the area of its base. A nickel has a greater diameter than a penny, then, the nickel stack has a greater area of its base, and therefore it has a greater volume.

Mazyrski [523]3 years ago
4 0

Answer: The volumes are different.

Step-by-step explanation:

We know that a penny has a smaller radius than a nickel.

Now, when we do stacks of coins we are creating cylinders, and the volume of a cylinder can be calculated as:

V = (pi*r^3)*h

Where pi = 3.14

r is the radius of the cylinder and h is the height.

We have that in bot cylinders h is the same value, but because the pennies have a smaller radius, then the cylinder of pennies has a smaller radius than the other, this means that the volume will also be smaller.

So the volumes are different.

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In the graph above, the coordinates of the vertices of QPR are Q(3, 0), P(5, 6), and R(7, 0). If AQPR is reflected across
ozzi

Answer:

D. (7, 0)

Step-by-step explanation:

The rule for a reflection over the y-axis is (x, y) → (x, -y)

This means that the x-values stay the same while the y-values change.

Q(x, y) → (x, -y)

Q(3, 0) → (3, 0)

Q'(3, 0)

P(x, y) → (x, -y)

P(5, 6) → (5, -6)

P'(5, -6)

R(x, y) → (x, -y)

R(7, 0) → (7, 0)

R'(7, 0)

Therefore, the correct answer is D.

Hope this helps!

7 0
3 years ago
What kind of mixture is a solution? a suspension? a colloid??
snow_lady [41]
All solutions are colloid because the mixtures are uniform in the ratio of combination of substances.

3 0
3 years ago
I don’t understand 23-26can someone help?
svetoff [14.1K]

Answer:

If 23-26, that is -3

Well, because 23 can't minus 26, that's why you have to rearrange so that you can find the correct answer by letting -26 + 23.

3 0
3 years ago
miley's music has a sale on music cds. all music cds are discounted 15%. mariana's receipt indicates that she saved 3$ on her cd
velikii [3]


The answer is 45.

You have to multiply 15% by $3.

When you multiply them you get 45.


5 0
3 years ago
23.) Clarissa earns $300 per
Talja [164]

Answer:

e = 300 + .0275c

Step-by-step explanation:

So the earnings = e

Then she earns $300 and a bonus for cosmetics : 2.75%c which is equal to 0.0275 c or .0275c the c for cosmetics.

Thus the answer becomes :

e = $300 + .0275c

HOPE THIS HELPED

3 0
3 years ago
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