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3 years ago

6

On Monday, 288 students went on a trip to the zoo. All 7 buses were filled and 8 students had to travel in cars. How many studen

ts were in each bus?

1 answer:

olchik [2.2K]3 years ago

8 0

Answer:

40 kids

Step-by-step explanation:

288 minus the 8 kids that had to hide in cars= 280. 280 divided by the seven busses is 40

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What expression is equivalent to (x+7)+3y

Marizza181 [45]

Answer: (3y) + 7+x

Step-by-step explanation:

You just flip and then their equivalent

3 0

3 years ago

The length of a rectangle is three times its width. If the perimeter is at most 128cm, what is the greatest possible value for t

anastassius [24]

Answer:

16 cm

Step-by-step explanation:

Let the width be x

The length will be 3 x since the length is three times the width

Perimeter=2(l+w) where l is length and w is width

By substituting 128 cm for perimeter, x for w and 3 x for l then

128=2(3x+x)

128=8x

$x=\frac {128}{8}=16$

Therefore, the width is 16 cm, the width is 16*3=48 cm

3 0

3 years ago

when you solve a problem by working backward, what does your answer represent? how can you check your answer?

Rus_ich [418]

Lets say you have an addition problem

3 + 7 = ?

To figure that you can just add in your head since its easy.

3 + 7 = 10

You can work backwords to check to see if your awnser is right.

When you work backwards you do the opposite of what you are doing, so if your adding the opposite would be subtracting, and if your multiplying than the opposite would be dividing.

So you could work it out like this:

(Regular⬇️)
3 + 7 = 10
(Backwards⬇️)
10 - 7 = 3

And if you get the same numbers that were in the original awnser than you are correct! Hope this helps!!!!

8 0

3 years ago

Please help me. You can explain it if you need to.

ASHA 777 [7]

Answer:

(0,-4) (-8,0)

Step-by-step explanation:

x = 0, y = -4

y=0, x = -8

7 0

3 years ago

Can anyone help me with this. It asks to solve and check your answer.

tankabanditka [31]

$\sf 4m-21=3(5m-1)$

First, distribute 3 into the parenthesis(multiply it to every term inside):

$\sf 4m-21=15m-3$

Add 21 to both sides:

$\sf 4m=15m+18$

Subtract 15m to both sides:

$\sf -11m=18$

Divide -11 to both sides:

$\sf m=-\dfrac{18}{11}$

To check our work we can plug this back into the original equation for 'm':

$\sf 4m-21=3(5m-1)$

$\sf 4(-\dfrac{18}{11})-21=3(5(-\dfrac{18}{11})-1)$

Multiply:

$\sf -\dfrac{72}{11}-21=3(-\dfrac{90}{11}-1)$

Distribute 3 into the parenthesis:

$\sf -\dfrac{72}{11}-21=-\dfrac{270}{11}-3$

Subtract:

$\sf -\dfrac{303}{11}=-\dfrac{303}{11}~\checkmark$

Both sides are equal to each other, so we solved it correctly.

6 0

3 years ago