Could someone help me? I can't understand anything

Mathematics

1 answer:

borishaifa [10]4 years ago

8 0

Answer:

I will only help with number one so you can learn how to do it. If you still dont understand, let me know and ill be here to help.

Step-by-step explanation:

$\frac{x}{4}$ > 21

what you have to do is get the x to be on its own. So we need to get rid of the 4. Since it's a fraction and fractions are division, you need to multiply both sides by 4. The reason as to why you multiply is because multiplication is the opposite if division. By multiplying both sides you get rid of the four and you are left with:

x>84

Again, let me know if you still need help.

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I do 10 - 8 for this, right...?

natima [27]

No, you would do 100 - 64 because 10^2 is 100 and 8^2 is 64.
100-64= 36
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6 0

3 years ago

I have no idea how to do this, pls help. Question in the picture. Please show your work. Thanks!

geniusboy [140]

Answer:

Step-by-step explanation:

This is a stem and leaf plot. If you don't know what a stem and leaf plot is, try searching it before coming back and viewing the solution. I also see an "example" button. It might help to hit that too.

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3 years ago

Steve puts an 18-foot ladder against his house. The ladder reaches a height of 15 feet on the house. How far is the bottom of th

krek1111 [17]

Answer:

$3 \sqrt{11}$

Step-by-step explanation:

Since we are given the hypotenuse which is 18 since it slanted, and leans on the house. And we are given one of the legs which is 15 since it is vertical. We can use the pythagorean theorem to solve for this problem.

${a}^{2} + {b}^{2} = c {}^{2}$