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Serhud [2]
3 years ago
15

Please help me !!!! and explain !!!

Mathematics
1 answer:
kompoz [17]3 years ago
6 0

The notation

... Figure A ~ Figure B

means the two figures have the same proportions. (They are <em>similar</em>.) Every dimension of the larger figure is 5/2 times the corresponding dimension of the smaller figure. (You know this is the ratio because you are given the radius measures.)

The constant of proportionality of volume is the cube of the constant of proportionality of the linear measures (such as radius or height). So, the larger volume is

... (5/2)³×(88 ft³) = 1375 ft³

_____

The formula for volume is

... V₁ = πr²h

When r and h are larger by a factor of 5/2, this is

... V₂ = π(5/2·r)²·(5/2·h) = πr²h·(5/2)³

... V₂ = V₁·(5/2)³ . . . . as discussed above

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Perform the indicated row operations:<br> -10r2 r2 3r3 <br> [2 -1 -4|7] [0 3 -2|5] [0 10 8|2]
n200080 [17]

Answer:

Second one is -30, 20, -50

Third one is 30, 24, 6

Step-by-step explanation:

6 0
3 years ago
Andrew deposits $300 into an account that earns 2% interest each year. After the first year, Andrew has $306 in the account. Aft
Sliva [168]

Answer:

It is a simple interest account

Step-by-step explanation:

As we might see from the given earnings, the amount of money he earned each year is the same as in the previous year. This means that the amount of money is growing linearly instead of exponentialy. This is characteristic to a simple interest account, which is found by using the formula:

I=Prt

where I = interest earned.

P = principal

r = Interest rate

t = time in years,

if we use this formula to calculate the amount of money earned after t years, we can see it will be the same as the values reported:

I=$300(0.02/year)(1year)=$6

I=$300(0.02/year)(2years)=$12

I=$300(0.02/year)(3years)=$18

So this simple interest account.

8 0
4 years ago
Which expression is equivalent to &gt;<br> 7^8/7 <br><br> 7^9<br> 7^8<br> 7^7<br> 1/7^8
tankabanditka [31]

Answer:

none of the above the 7^8/8 is equivalent to

5 0
3 years ago
Translate this sentence into an inequality: A cheetah can reach a speed of 70 mph. However, this speed can be maintained for no
bezimeni [28]

The sentence says the speed can be maintained for no more than 1640 feet.

The "no more" means 1640 feet or less ,so the equation would be d is less than or equal to 1640.

The correct equation is A.

4 0
4 years ago
At a coffee shop, Polly can choose to earn $12 per hour plus a starting bonus of $100 or she can choose to earn $16 per hour wit
vova2212 [387]

Answer:

For the first option 1h for the second option is 7h and she will earn the same which is 112$

Step-by-step explanation:

12 x 1 = 12 + 100 = 112

16 x 17 =112

5 0
3 years ago
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