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rewona [7]
4 years ago
13

How do I solve these math problems

Mathematics
1 answer:
olchik [2.2K]4 years ago
6 0
Its simple. You collect like terms and put them on one side of the equation

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F(x)=-3x^2-6x<br><br> Find f(−9)
Anni [7]

Answer:

Your brain.

Step-by-step explanation:

All you have to do is plug the value of -9 into the equation everywhere you see an 'x' and if you are being asked this question I assume you have basic mathematical skills

3 0
3 years ago
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Sally buys a coffee table for $300. She refinished it and then sells it for $405. What is the percent increase
andrew-mc [135]

Answer:35%

Step-by-step explanation:

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3 years ago
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A 10-year-old and a 5-year-old both eat similar-sized apples. Which child burns the energy faster?
Jobisdone [24]

Answer:

10 year old

Step-by-step explanation:

because the 10 year old has a better developed body than a 5 year old.

Hope this helps, have a nice day/night! :D

4 0
3 years ago
Terry has a number cube that is numbered from 1 to 6. She rolls the cube 50 times. Which equation can be used to predict the num
Goshia [24]

Answer:

Step-by-step explanation:

2/6(50)

because 2 of the 6 is greater than 4

with 50 rolls

6 0
4 years ago
a rectangular room is 4 times as long as it is wide and it's perimeter is 60 meters find the dimension of the room
olya-2409 [2.1K]

To answer this problem we have to use two different variables. For example...

L = Length

W = Width

So we know that the definition of perimeter is

L + L + W + W (or all the sides added up)

Now we also know that The Length is 4 times longer than the width.

So we can write 4W to replace the L

So in the given equation we set up Replace every L with 4W

4W + 4W + W + W = 60 meters

now group our W's

10W = 60 divide both sides by 10 to get W to be alone

÷10   = ÷10 It cancels on the left side and we solve on the right side.

W = 6

So now that we know what the width equals we can find what the length equals .

Remember this?

4W = L (plug in 6 for W)

4(6) = L

So L = 24


Our dimensions of this rectangle are length 24, width 6.


Good Luck! :)

<3



7 0
3 years ago
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