Please help me this makes no sense

Answer:

A) 12

You know:

AB= 3x

AB= 3xAC= 17

AB= 3xAC= 17BC= 2x-3

Therefore, you can put the values in a number line for reference. By doing this you can see that 3x + 2x -3 (or AB +BC) = 17 (or AC)

From here you can set up the equation to be:

17 = 2x - 3 + 3x

and solve for x by combining like terms:

17= 5x-3

adding 3 to both sides:

20=5x

dividing each side by 5:

20/5=5x/5

to get:

x=4

then, you're gonna plug in your x (4) into 3x (your AB) in order to solve for AB:

AB=3x

AB=3x =3(4)

AB=3x =3(4) =12

therefore, your answer is:

AB = 12

Answer:

35

Step-by-step explanation:

Answer:

12−(3−(13)(2))

=12−(3−26)

=12−(−23)

=35

Step-by-step explanation:

Answer:

20

Step-by-step explanation:

20 is the greatest factor because:

20*5=100

20*1=20

Answer:

70, 89, 64, 96, 82

Step-by-step explanation:

You can translate 3/5 into a whole number because 5 goes into 100, 20 times. So if you figure out the 3/5 is 60, you can use any numbers between that and 100.  

Answer:

Let's define.

L = rate at which the large pump fills the pool.

S = rate at which the small pump can fill the pool.

We have two relations:

"Two large and 1 small pump can fill a swimming pool in 4 hours."

(2*L + S)*4h = 1

"One large and 3 small pumps can also fill the same swimming pool in 4 hours."

(L + 3*S)4h = 1

Then we have the system of equations:

(2*L + S)*4h = 1

(L + 3*S)4h = 1

To solve this system, we need to isolate one of the variables in one of the equations, i will isolate S in the first equation:

S = 1/4h - 2*L

Now we can replace that in the second equation:

(L + 3*(1/4h - 2*L))4h = 1

L + (3/4h) - 6*L = 1/4h

-5*L = 1/4h - 3/4h = -2/4h

L = (2/4h)*(1/5) = (2/20h) = 1/10h

This means that one large pump needs 10 hours to fill one pool.

With this, we can find the value of S:

S = 1/4h - 2*L = 1/4h - 2/10h = 5/20h - 4/20h = 1/20h

This means that a small pump needs 20 hours to fill a pool.

Now we can answer:

How many hours will it take 4 large and 4 small pumps to fill the swimming pool?

We need to solve the equation:

(4*(1/10h) + 4*(1/20h))*T = 1

We need to find the value of T.

T = 1/((4*(1/10h) + 4*(1/20h)) = 1.67 hours.

This means that 4 large and 4 small pumps need 1.67 hours to fill a pool.

Answer:

A, C, E, F

Step-by-step explanation:

Functions mean that each x-value can only go to one y-value, but the same x-value can't go to 2 different y-values.

Different x-values, such as x=-4 or x=5, CAN go to the same y-value as shown in C.

But for B, x=5 can't go to both y=0 and y=8

Answer:

Step-by-step explanation:

C

Answer:

160 cm^2/s

Step-by-step explanation:

Just took the test.

Answer:

160cm^2

Step-by-step explanation:

answer from plato

Answer:

9

Step-by-step explanation:

Hi there!

[tex]\large\boxed{x = \frac{24z}{(18 + yz)} }[/tex]

We can begin solving by creating a common denominator:

x · 3 · z = 3xz. This is the denominator that all of the numerators must have in order to work with the fractions.

Multiply each numerator by the missing parts of the common denominator:

[tex]\frac{8 * 3 * z}{3xz} - \frac{y * x * z}{3xz} = \frac{6 * 3 * x}{3xz}[/tex]

Simplify:

[tex]\frac{24z}{3xz} - \frac{yxz}{3xz} = \frac{18x}{3xz}[/tex]

Move all the fractions involving x in the numerator to the right-hand side of the equation:

[tex]\frac{24z}{3xz} = \frac{18x}{3xz} + \frac{yxz}{3xz}[/tex]

Combine fractions:

[tex]\frac{24z}{3xz} = \frac{18x + yxz}{3xz}[/tex]

Multiply both sides by 3xz:

[tex]24z = 18x + yxz[/tex]

Factor out "x" from the terms on the right-hand side:

[tex]24z = x(18 + yz)[/tex]

Divide both sides by (18 + yz)

[tex]\frac{24z}{(18 + yz)} = x[/tex]

Answer:

17 5/8

Step-by-step explanation:

Thats the answer

Answer:

13$ dollars

Step-by-step explanation:

I hope this helps

Answer: 25

Step-by-step explanation: 5x5 = 25

plz mark branilyest

Answer: 25

Step-by-step explanation: A perfect square is a number that can be expressed as the product of two equal integers. hope this helps

Answer:

its b.

Step-by-step explanation:

also youre gonna get banned lol

Answer:

16

Step-by-step explanation:

the numbers are divided by 4 to form a sequence so 64 divided by 4 is 16

Answer:

-3x+2

Step-by-step explanation:

Since it's addition you just combine all like terms so,

5x+4

-8x-2

= -3x+2

Answer:

-3x-4

Step-by-step explanation:

first you add 5x and -8x to get -3x, then you get -4.

Answer:

7 Groups of 1/2 in 3 1/2

Answer:

b) b=a/h

Step-by-step explanation:

A=bh

Dividing both side by h,

or, b=A/h

OR,

A=bh

or, b=A/h

Answer:

b

Step-by-step explanation:

uhm

Answer:

Likely

Step-by-step explanation:

There are only 2 odd numbers so you’re more likely to get an even number than an odd one.

Answer:

21.875 Miles

Step-by-step explanation:

If azul averages 12.5 miles per hour, we can multiply the time it took azul to bike up the mountain trail times the distances per hour

To see if it is possible, you will want to create an equation.

3(4x+2) = 6(2x+2)

As you can see, you will need to use the distributive property for this equation.

12x + 6 = 12x + 12

Remove 6 from both sides.

12x = 12x + 6

Divide 12 by both sides

x = x + 0.5

Because the answer wasn't x = x, the two plants won't ever be the same height. Even if you tried to subtract 0.5, you'd only get a negative 0.5 on the other side.

Answer:

4y-36

Step-by-step explanation:

you distribute the 4 to y and 9

(4 x y) - ( 4 x 9)

4y - 36

Answer:

4 .

Step-by-step explanation: