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Vera_Pavlovna [14]
3 years ago
10

Help this is confusing

Mathematics
1 answer:
Novay_Z [31]3 years ago
7 0
What is confusing???
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Why is a cube root of a negative is always a negative? Need help! Thanks!
Fed [463]
A cube root is representaive of reverse mutiplication. E.g Square root of 4 is 2 (2x2)
Using this, we can see that anytime 3 negatives are multiplied, the answer will always be negative.
7 0
3 years ago
The figure is made up of a hemisphere and a cylinder.
Sidana [21]

Answer:

90π in^3.

Step-by-step explanation:

Total Volume = volume of cylinder + volume of the hemisphere.

= πr^2h + 1/2*4/3πr^3

= π * 3^2 * 8 + 2/3 π 3^3       ( Note the radius r = 1/2 diameter = 1/2*6 = 3)

= 72π + 18π

= 90π in^3.

3 0
3 years ago
Joey is standing on a diving board that is 5.6 feet above sea level. Joey dives into the water to a depth of -8.6 feet below sea
pashok25 [27]

Answer:

5.6 - (-8.6)

Step-by-step explanation:

6 0
3 years ago
Find the numbers 1-20 using only four 4's and any operation
Papessa [141]
0 = 44-44
1 = 44/44 or (4+4)/(4+4) or (4/4) / (4/4) or [(4! - 4)/ 4] - 4
2 = 4/4+4/4
3 = (4+4+4)/4
4 = 4*(4-4)+4
5 = (4*4+4)/4
6 = 4*.4+4.4
7 = 44/4-4
8 = 4+4.4-.4
9 = 4/4+4+4
10 = 44/4.4
11 = 4/.4+4/4
12 = (44+4)/4
13 = 4!-44/4
14 = 4*(4-.4)-.4
15 = 44/4+4
16 = .4*(44-4)
17 = 4/4+4*4
18 = 44*.4+.4
19 = 4!-4-4/4
20 = 4*(4/4+4)
5 0
4 years ago
Erika worked 14 hours last week and 20 hours this week. If she earns $9 per hour, how much did she earn during these two weeks?
ozzi

we know that

Erika earns \$9 per hour

so

By proportion

Find how much she earn during the total hours of two weeks

The total hours of two weeks is equal to

14+20=34\ hours

\frac{9}{1} \frac{\$}{hour} =\frac{x}{34} \frac{\$}{hours} \\ \\x=34*9 \\ \\x=\$306

therefore

<u>the answer is</u>

\$306

4 0
4 years ago
Read 2 more answers
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