All categories

2 years ago

The sum of three numbers is 20

Mathematics

1 answer:

pogonyaev2 years ago

7 0

Answer:

A*B*C= 28

Step-by-step explanation:

A+B+C=20

1. A = 4(B+C)

2. B = 7C

3. C = C

----------------------

A = 4( 7C + C )

A=4(8C)

A= 32C

---------------------

A+B+C=20

32C + 7C + C = 20

40C = 20

C = 20/40

C = 1/2

------------------------

A= 32(1/2) = 32/2 = 16

B= 7(1/2) = 7/2

C= 1/2

A*B*C = 16 * 7/2 * 1/2

A*B*C= 28

You might be interested in

PLS ANSWER QUICK! Thanks!

ziro4ka [17]

Answer:

The correct answer would be $a=\sqrt{c^2-b^2}$

Step-by-step explanation:

given $a^2+b^2=c^2$ we want to solve for a

How?

We can do this by using basic algebra ( isolating the variable (a ))

Step 1 subtract $b^2$ from each side

$a^2+b^2-b^2=a^2\\c^2-b^2=c^2-b^2$

now we have $a^2=c^2-b^2$

step 2 take the square root of each side

$\sqrt{a^2} =a\\\sqrt{c^2-b^2} =\sqrt{c^2-b^2}$

we're left with $a=\sqrt{c^2-b^2}$

Hence your answer is A

5 0

3 years ago

What is the period of the sinusoidal function?

GuDViN [60]

Answer:

i dont know my guy

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

13. What is the rule of the function whose<br> graph is shown below?

PtichkaEL [24]

Answer:

x-x-y

Step-by-step explanation:

5 0

2 years ago

If you ran exactly one mile, how many feet did you run

elena-s [515]

Solution:

we have been asked to find

If you ran exactly one mile, how many feet did you run.

It mean , we will have to convert miles in feet.

As we know that

1 mile is equivalent to 5280 feet.

Hence , we can use this conversion to get the exact value of miles in feet.

If you ran exactly one mile,it mean you ran exactly for 5280 feet.

4 0

3 years ago

Read 2 more answers

Write 80% as a decimal.<br> I<br> help me??

Ghella [55]

Answer:

0.8

Step-by-step explanation:

6 0

2 years ago