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Vedmedyk [2.9K]
2 years ago
8

PLEASE ANSWER!

Mathematics
1 answer:
luda_lava [24]2 years ago
8 0
Let R be the greater radius and r be the smaller radius

A) Area of the sidewalk = R^2 - r^2 - This can be the expression

B) = 3.14
=(R^2-r^2)
=(11^2-9^2)
=(121-81)
=*40

That was the simplified expression

Answer = 3.14 * 40 = 125.6m^2
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Newton’s Second Law of Motion states that the acceleration of an object is directly proportional to the force exerted on the obj
aev [14]

The force the same object will exert if it accelerates at a rate of 7 m/s² is 35N

From the question,

We are to determine the force the object will exert.

From the information,

Newton’s Second Law of Motion states that the acceleration of an object is directly proportional to the force exerted on the object

Let acceleration be a

and

Force be F

Then we can write that,

F ∝ a

Then,

Introducing the constant, mass, m

We get

F = ma

Now, we will determine the mass of the object

F = 15 N

a = 3 m/s²

Putting the parameters into the formula, we get

15 = m × 3

∴ m = 15 ÷ 3

m = 5 kg

The mass of the object is 5 kg.

Now, to determine the force the same object will exert if it accelerates at a rate of 7 m/s²

That is,

a = 7 m/s²

and

m = 5 kg

Putting the parameters into the formula, we get

F = 5 × 7

F = 35 N

Hence, the force the same object will exert if it accelerates at a rate of 7 m/s² is 35N

Learn more here: brainly.com/question/13590154

4 0
2 years ago
Please help with this problem
vodka [1.7K]
Answer:

0.004, 4%, 1/4, 4/9.

Explanation:

3 0
2 years ago
I need help fast plss ive failed this test 7 times already​
liberstina [14]

it's either a or b, not sure but I think it's b

5 0
2 years ago
QOTD: What's 658x923? Do NOT use a calculator. Whoever, answers this correctly, I will give BRAINLIEST.
Helga [31]

Answer:

the awnser is 607,334 because when you multiply by 3 its the same like multipliying on

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Need some help, please. :D
4vir4ik [10]

Answer:   (P.s its very hard to write special characters here, i hope this helped though)

((−6d0)(g−3))(h2)

d−5m3g−2h5

=

−6d5g2h2

g3h5m3

=

−6d5

gh3m3

4 0
2 years ago
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