All categories

3 years ago

PLS HELP ASAP DOING A TEST

Mathematics

2 answers:

gregori [183]3 years ago

6 0

Answer:

314.15926535898 in squared

Step-by-step explanation:

it's the area of the circle

creativ13 [48]3 years ago

3 0

We know d=20, so we can divide this by 2 to find the radius.
r=20/2
r=10
With the radius, you can find the area by using this formula:
A=(3.14)r^2
When plugging this in you get:
A=(3.14)10^2
A=314

You might be interested in

Variance is_________.

katrin [286]

Answer:

Step-by-step explanation:

Variance can be said to be a measure of dispersion for a random sample.

Variance = pq/n

When given the variance, we can find the standard deviation.

Standard deviation = √variance

= √pq/n

3 0

4 years ago

Two sides of a right triangle have the lengths 4 and 5. What is the product of the possible lengths of the third side? Express t

marishachu [46]

Answer:

19.2

Step-by-step explanation:

1st Case:

4 and 5 are legs of the right triangle.

Using the pythagorean therom: a^2+b^2=c^2

We can say that 4^2+5^2=x^2

16+25=x^2

41=x^2

x=√41

√41 is about 6.4

x=6.4

2nd Case

5 is the hypotenuse of the right triangle and 4 is the legs.

Using the pythagorean therom: a^2+b^2=c^2

We can say that 4^2+x^2=5^2

16+x^2=25

x^2=9

x=3

Final Step

We need to multiply the two possible lengths for x. So for case 1 the length of x was 6.4 and for case two the length was 3. 6.4*3=19.2

Anwser: 19.2

6 0

3 years ago

Use the Law of Cosines to find the missing angle. Find m∠A to the nearest tenth of a degree.

Savatey [412]

Firstly, we can look at our givens,

a = 17

b = 22

c = 30

And we are looking for m∠A

$a^2=b^2 +c^2 -2bc (cosA)$ Is the Law of Cosines. Now we can solve for our unknown, m∠A. This will give us

$A = cos^{-1} (\frac{-a^2+b^2+c^2}{2bc})$

Now we can substitute in our given variables.

$A= cos^{-1} (\frac{-(17^2)+27^2+30^2}{2(27)(30)} )$

Then we can plug this into our calculator which will give us

34.19185257 degrees

Now we just have to round to the nearest tenth

This means that the answer is 34.2 degrees

8 0

3 years ago

Read 2 more answers

Zahid is paid a set wage of 774.72 for a 36 hours week. plus time and a half for overtime. In one particular week, he worked 43

Viktor [21]

Answer:

1162.08

Step-by-step explanation:

zahid is paid 774.72 for 36 hrs so,

he worked 43 hrs,

so no. of hours ot: 43-36

7 hrs

now we will find the half of 774.72

387.36

now add 774.72+387.36

1162.08

so that was his earning

5 0

3 years ago

Which statement best justifies whether (x – 3) is a factor of the polynomial p(x) = x - 3x? - 2x - 6?

Alinara [238K]

Answer:

It is not a factor

Step-by-step explanation:

It is because p(x)=-12 at x=3

6 0

3 years ago