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Marrrta [24]
3 years ago
13

8th grade math, please help.

Mathematics
1 answer:
Anastasy [175]3 years ago
5 0

Answer:

V = 15/4π = 3.75π

Step-by-step explanation:

V=πr^2h

V=π(1/2^2)15

V=π(1/4)15

V=15/4π

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Help please :(((((( ill givve brainly
SVETLANKA909090 [29]

Answer:

2.86 hours = £26.57

Step-by-step explanation:

5 builders = 3.5 hours

<u>Express it in ratio form:</u>

5 : 3.5 (B1:H1)

<u><em>However, on Tuesday 2 builders(B2) are available. We can set up a proportion to find the number of hours.</em></u>

<u><em>Since This is an inverse proportion, it will be written like:</em></u>

=> B1:H1 = H2:B2

Where H2 = x(no. of hours)

=> 5 : 3.5 = x : 2

<u><em>Product of means = Product of Extremes</em></u>

=> 5*2 = 3.5x

=> 10 = 3.5 x

Dividing both sides by 3.5

=> x = 2.86 hours

<u><em>Now, On Tuesday:</em></u>

1 hour = £9.3

<u><em>For 2.86 hours,</em></u>

2.86 hours = £9.3 × 2.86

2.86 hours = £26.57

6 0
3 years ago
Read 2 more answers
Find the number of 4-digit numbers that contain at least three even digits.
mylen [45]

Answer:

2625

Step-by-step explanation:

First let's see all the possible combinations.

(Even=E, Odd= O)

1) EEEO

2) EEOE

3) EOEE

4) OEEE

5) EEEE

Now let's see what E and O possibly could be

E = 0, 2, 4, 5, 6 and 8 (5)

O = 1, 3, 5, 7, 9 (5)

Now we are just simply gonna multiply

1) EEEO = 4*5*5*5

2) EEOE = 4*5*5*5

3) EOEE = 4*5*5*5

4) OEEE = 5*5*5*5

5) EEEE = 4*5*5*5

The even contains a 0, so you can't put 0 in, so (5-1=4), there are only 4 digits for the even.

500 times 4 = 2000

5⁴ = 625

2000+625= 2625

6 0
3 years ago
Levi's mom gave him $30 so he can go to the movies.He used 1/5 of the money to pay for his movie ticket.He spent 1/3 of what he
kolbaska11 [484]
If Levi has $30, and he spends 1/5 of it on his movie ticket, we can figure out how much 1/5 is by dividing 30 by 5.

30 divided by 5 = 6

Now Levi has $6. He than spends 1/3 of that on popcorn. We can divide 6 by 3.

6 divided by 3 = 2

Levi is left with $2.
5 0
4 years ago
HELP PLEASE IM SO CONFUSED
Tpy6a [65]

Answer:

So 5

Step-by-step explanation:

You take the two and put tgether and get a number then divide?

7 0
3 years ago
There are 4 boxes of cookies each box holds 8 cookies how many childrrn can be served 2 cookies each
REY [17]
The answer would be 16.
 

you have to multiply 4 and 8 which =32 and then divide 32 by 2 which =16
6 0
4 years ago
Read 2 more answers
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