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liraira [26]
2 years ago
6

What is it and why? having a good explanation would really help me. thx <3

Mathematics
1 answer:
Alexeev081 [22]2 years ago
7 0

Answer:

B. (-4-2)

Step-by-step explanation:

since the numerator is one you can divide -8 by the denominator of each fraction. -8/2 = -4, -8/4 = -2

(-4-2)

You have to make sure you distribute the -8 to all parts inside the parenthesis for it to be right.

i hope this helps :)

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The radius of a spherical ball is measured at r = 25 cm. Estimate the maximum error in the volume and surface area if r is accur
natulia [17]

Answer:

Volume = 2384.582 cm^3

Surface Area = 189.626 cm^2

Step-by-step explanation:

With the accuracy of r within 0.6 cm minimum & maximum values are 25-0.3 and 25+0.3 respectively.

Taking r = 25 cm

Volume = (4/3)*Pi*R3 = 65449.847

Surface Area = 4*Pi*R2 = 7853.982

The minimum possible values for Volume and surface area would be:

if r = 24.7 cm

Volume = (4/3)*Pi*R3 = 63121.814 cm^3

Surface Area = 4*Pi*R2 = 7666.617 cm^2

The maximum possible values for Volume and surface area would be:

if r = 25.3 cm

Volume = (4/3)*Pi*R3 = 67834.429 cm^3

Surface Area = 4*Pi*R2 = 8043.608 cm^2

Error from Minimum values:

Volume = 2328.033 cm^3

Surface Area = 187.365 cm^2

Error from Maximum values:

Volume = 2384.582 cm^3

Surface Area = 189.626 cm^2

3 0
3 years ago
Question is in picture
Jobisdone [24]

Answer:

the answer will be 14,3 ok but check it

5 0
3 years ago
Hello! I don’t really understand this so please help ASAP!!! Thank you!
zepelin [54]
B for Figure 30 is 90 degrees! Hope this helps! God bless you and stay safe! <3✝️❤️
3 0
3 years ago
(this is my sister on my acc I'm letting her) True or False? When you use a pulley you use less force to pull up a load.Explain
natta225 [31]

Answer:

True depending on what you are comparing it to.

Step-by-step explanation:

A pulley would help lighten the load that you are trying to pull up, which may make it easier for you to get the load to your designated area. The more complicated it is, usually the more 'lighter' it becomes, or the less force you have to exert.

For example, you will have to give a 100% energy in trying to life a heavy box. However, if you use a simple pulley (only one), you may only have to exert 75% more energy, for the weight is significantly lower.

~

3 0
3 years ago
Please help me plzzzz
joja [24]

Answer:

pretty sure its 12-g

Step-by-step explanation

because adding 0 is just adding nothing so you can omit the 0 and not change anything.

8 0
2 years ago
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