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TEA [102]
3 years ago
13

Hi what is the anwer for this

Mathematics
1 answer:
IRISSAK [1]3 years ago
4 0

Answer:

2.5cm^2

Step-by-step explanation:

so diameter is basically radius*2...to find radius(since area of circle is pi*r^2 we need to divide diameter by 2)

so 1.8/2=0.9

now,

pi*0.9^2

pi*0.81

2.5 cm^2

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Find the perimeter of each polygon. Assume that lines which appear to be tangent are tangent.
ratelena [41]

9514 1404 393

Answer:

  34.8

Step-by-step explanation:

The only polygon in the figure is the triangle outlined in red. Its perimeter is the sum of its side lengths: 15 +6.1 +13.7 = 34.8 units.

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The two halves of the chord are the same length.

4 0
2 years ago
A rectangular field is 300 meters long and 250 meters wide. What is the area of the field in square kilometers
lidiya [134]

Answer:

0.075 sq km

Step-by-step explanation:

Given that there is a rectangular field with dimensions of length =300 m and width = 250 m.

We have to calculate area of this rectangle in the units of square kilometres.

Let us convert length and width into km

1000m = 1 km

Hence length = 300/1000= 0.3 km and

width = 250/1000 = 0.25 km.

ARea = length x width = 0.3 x 0.25

=0.075 square km.

7 0
2 years ago
An amusement park opens daily at 9:30 a.m. This morning the parking lot for the amusement park opened at 8:00 a.m. At 9:00 a.m.,
Eddi Din [679]

Answer:

An exponential function

Step-by-step explanation:

So let's suppose that at 9:00 am there were 132 cars. We'll call this P_0

P_{0}=132

On the next half an hour, let's say at 9:30, the number of cars trippled, this is:

P_{1}=132*3=396

the next half an hour, at 10:00 am, the number of cars trippled, this is:

P_{2}=132*3*3=1188

and finaly, at 10:30am, the number of cars trippled again, so:

P_{3}=132*3*3*3=3564

We can now see a pattern there which can be simplified as:

P(n)=P_{0}(3)^{n}

or

P(n)=132(3)^{n}

where:

P_{0}=initial number of cars

n=number of half hours after 9:00 a.m

P_{n}= number of cars after n number of half hours.

That function we found there is an exponential function, which represents an initial amount being multiplied by the same number several times.

4 0
2 years ago
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Anton [14]

Answer:

do you have a question?

Step-by-step explanation:

3 0
2 years ago
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8. which function does not represent y as a function of x?​
olya-2409 [2.1K]

Answer:  graph D

<u>Step-by-step explanation:</u>

graph A) The equation is y = x

graph B) The equation is y = -x² + 2

graph C) The equation is x = y²

graph D) The equation is y = 2

Which equation does not have an "x" in it?  <em>D</em>

Therefore, the y-value is not dependent on an x-value.

6 0
2 years ago
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