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2 years ago

The diameter of the circle shown below is 12m. What is the area of the circle?

Mathematics

2 answers:

olya-2409 [2.1K]2 years ago

7 0

Answer:

Step-by-step explanation:

A = 1/4 pie d2

= 1/4(22/7)(12)2

= 1/4(22/7)144

= 113.1

Lana71 [14]2 years ago

6 0

Answer:

72π

Step-by-step explanation:

A = 2πr^2

2π (6)(6) = 72π

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Patty has 817 marbles. She gave away 529 of her marbles. How many marbles doe she have left? 312 marbles, 298 marbles, or 288 ma

Shtirlitz [24]

Answer:

288 because you just subtract 529 from 817

Step-by-step explanation:

7 0

2 years ago

The temperature was 78°F at 3 P.M. Each hour for

polet [3.4K]

Answer:

66 °F

Step-by-step explanation:

At 4 P.M., the temperature had decreased by 3° from the temperature at 3 P.M., so was ...

4 P.M. temp = 78 °F -3° = 75 °F

This was repeated until 7 P.M.

5 P.M. temp = 75 °F -3° = 72 °F

6 P.M. temp = 72 °F -3° = 69 °F

7 P.M. temp = 69 °F -3° = 66 °F

The temperature at 7 P.M. was 66 °F.

Of course the repeated subtraction can be simplified using multiplication. The subtraction of 3° four times is equivalent to the subtraction of . . .

(3°)(4) = 12°

That is, the temperature at 7 P.M. is ...

78 °F -3°×4 = 78 °F -12° = 66 °F

6 0

2 years ago

1)Sheyna drive to the lake and back. It took two hours less time to get there than it did to get back. The average speed on the

ipn [44]

Answer:

8 hours

Step-by-step explanation:

Given:

Sheyna drives to the lake with average speed of 60 mph and

$v_1 = 60\ mph$

Sheyna drives back from the lake with average speed of 36 mph

$v_2 = 36\ mph$

It took 2 hours less time to get there than it did to get back.

Let $t_1$ be the time taken to drive to lake.

Let $t_2$ be the time taken to drive back from lake.

$t_2-t_1 = 2$ hrs ..... (1)

To find:

Total time taken = ?

$t_1+t_2 = ?$

Solution:

Let D be the distance to lake.

Formula for time is given as:

$Time =\dfrac{Distance}{Speed }$

$t_1 = \dfrac{D}{60}\ hrs$

$t_2 = \dfrac{D}{36}\ hrs$

Putting in equation (1):

$\dfrac{D}{36}-\dfrac{D}{60} = 2\\\Rightarrow \dfrac{5D-3D}{180} = 2\\\Rightarrow \dfrac{2D}{180} = 2\\\Rightarrow D = 180\ miles$

So,

$t_1 = \dfrac{180}{60}\ hrs = 3 \ hrs$

$t_2 = \dfrac{180}{36}\ hrs = 5\ hrs$

So, the answer is:

$t_1+t_2 = \bold{8\ hrs}$

8 0

3 years ago

The quadratic function h(t) = -16t^2 + 120 represents the height of 120 feet. what is the height of the object after 1.5 seconds

Anettt [7]

Answer:

84 feet

Step-by-step explanation:

-16(1.5)^2+120=84

5 0

2 years ago

3.625 x 10−4 Question 2 options: .3625 36,250 0.0003625

disa [49]

Answer:

0.0003625

:) Hope that helps :)

3 0

2 years ago