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kolezko [41]
3 years ago
11

Plz help I'm will give a brainliest​

Mathematics
1 answer:
Marysya12 [62]3 years ago
3 0

Answer:

A) 62.8cm^2

Step-by-step explanation:

A=πr^2 area of the big circle 113.1 minus the small circle 50.27 113.1-50.27=62.83

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What powers of 3 are in the range of 1,oo due tommarow
ElenaW [278]
3 to the 1st is 3
3 to the 2nd is 9
3 to the 3rd is 27
3 to the 4th is 81
3 to the 5th is 243
3 to the 6th is 729
6 0
2 years ago
A car is on a driveway that is inclined 10 degrees to the horizontal. A force of 490 lb is required to keep the car from rolling
lara31 [8.8K]

Answer:

a) weight  of the car = 2816,1 lbs

b) 2773 lbs

Step-by-step explanation:

The equilibrium force is 490 lbs. That force keep the car at rest, then

∑ Fy  =  0     and  ∑Fx  =  0

Forces acting on the car:

The external force   490 lbs

weight of the car   uknown

Normal force

sin∠10°  =  0,174

cos∠10° = 0.985

∑Fx  =  0         mg*sin10°- 490 = 0      ∑Fy =  0      mg*cos10° - N  =  0

mg*0,174= 490

mg  =  490 / 0,174

mg = 2816,1 lbs

weight  of the car = 2816,1 lbs

The Normal force

mg*cos10° - N  =  0        2816,1 * 0,985 = N

N = 2773 lbs

Then equal force in magnitude and in opposite direction will car exets on the driveway

3 0
3 years ago
I will mark. please!!!
Artyom0805 [142]

Answer: what ever is -10 1/2

Step-by-step explanation:

Because its the lowest negative there and yea!

8 0
2 years ago
Read 2 more answers
A twelve-sided die with sides labeled 1 through 12 will be rolled once. Each number is equally likely to be rolled.
kykrilka [37]

Answer:

1/6

..................

6 0
2 years ago
If f(x)=5x0+4x-3 then f(a)=
Bingel [31]

Answer:

f=

1

/4

y+

−1

/2

Step-by-step explanation:

Let's solve for f.

y=5x^0+4x−3

Step 1: Flip the equation.

4x+2=y

Step 2: Add -2 to both sides.

4x+2+−2=y+−2

4x=y−2

Step 3: Divide both sides by 4.

4x

/4

=

y−2

/4

x=

1

/4

y+

−1

/2

=f=

1

/4

y+

−1

/2

<h3><em><u>brainliest please?</u></em></h3>
3 0
2 years ago
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