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3 years ago

I completly lost please hel me

Mathematics

1 answer:

Gelneren [198K]3 years ago

5 0

What is the answer question

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What percent of 40 is 80?

antiseptic1488 [7]

Answer:

200% i think

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

You have a bag of 15 marbles. 8 are red. 5 are blue. 2 are green. You asked 15 people to pull a random marble and replace it. Th

slavikrds [6]

Answer:

Step-by-step explanation:

We have 2 probabilities: Theoretical probability and Experimental probability.

We cant know what will happen as it's just probability but both joe and Jill are making educated guesses based on probabilities, just different kinds.

6 0

3 years ago

After three years, Elsie’s car had lost 1/3 of its original value. Two years later, it had lost an additional 1/4 of its origina

horrorfan [7]

Answer:

1,500 dollars

Step-by-step explanation:

3,600 - 1/3(3600)=2,400

2,400 -1/4(3600)=$1,500

Hope this helps!

8 0

3 years ago

40 POINTS AVAILABLE

vazorg [7]

Answer:

The area of the shaded region is $(486\pi-648)\ units^{2}$

Step-by-step explanation:

we know that

The area of the shaded region is equal to the area of the larger circle minus the area of the square plus the area of the smaller circle

Step 1

Find the area of the larger circle

The area of the circle is equal to

$A=\pi r^{2}$

we have

$r=AB=18\ units$

substitute in the formula

$A=\pi (18)^{2}=324\pi\ units^{2}$

step 2

Find the length of each side of square BCDE

we have that

$AB=18\ units$

The diagonal DB is equal to

$DB=(2)18=36\ units$

Let

x------> the length side of the square BCDE

Applying the Pythagoras Theorem

$36^{2}=x^{2} +x^{2}\\ 1,296=2x^{2}\\ 648=x^{2}\\ x=\sqrt{648}\ units$

step 3

Find the area of the square BCDE

The area of the square is

$A=(\sqrt{648})^{2}=648\ units^{2}$

step 4

Find the area of the smaller circle

The area of the circle is equal to

$A=\pi r^{2}$

we have

$r=(\sqrt{648})/2\ units$

substitute in the formula

$A=\pi ((\sqrt{648})/2)^{2}=162\pi\ units^{2}$

step 5

Find the area of the shaded region

$324\pi\ units^{2}-648\ units^{2}+162\pi\ units^{2}=(486\pi-648)\ units^{2}$

7 0

3 years ago

If the total cost of z apples is a cents, what is the general formula for the cost, in cents, of w apples?

jonny [76]

The total cost of z apples = a cents

The cost of 1 apple = \frac{a}{z} cent

The cost of w apples = \frac{wa}{z} cents

5 0

3 years ago