MATHEMATICS MIDDLE SCHOOL

Simplify. –10.5 – (–5.3) + 20.2

A.
36

B.
–36

C.
15

D.
–4.4

Answers

Answer 1
Answer:


so you take -10.5+5.3+20.2=??

-10.5+5.3=-5.2

-5.2+20.2=15

Ur Answer Is 15

Did I Help??

Hope I Did!!
Answer 2
Answer: -10.5-(-5.3)+20.2
=-10.5+5.3+20.2
=15

.
..

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Write 6)15 as a fraction with a denominator of 20

Answers

Consider the numbers in the fraction: 
6 is 2 times 3 
The denominator 15 is 5 times 3 
Numerator : Denominator = 6 : 15 or 2 : 5 
If the Denominator is to be 20 it is 4 times 5, 
the Numerator has to be 4 times 2 
Answer: 
6/15 = 8/20

2 fractions equivalent to 1/4

Answers

Two fractions equivalent to 1/4 are...

2/8
4/16
6/24

:)
Fractions equivalent to 1/4

2/8
4/16
8/32
100/400

Just take 1/4 and multiply both numbers of your fraction by the same number. Like 1/4 times 2 is 2/8

What is 20% of $335=?

Answers

I think the answere is $67
3350/100 is your answer because you have to multiply 30 till it turns to 100 and multiple the same to the numerator.

8 (x-1) = 3 (3x-2)
Please help, its due tomorrow!

Answers

8\left( x-1 \right) =3\left( 3x-2 \right) \n \n 8x-8=9x-6\n \n 9x-8x=-8+6\n \n x=-2
8 (x-1) = 3 (3x-2)\n8x-8=9x-6\n8x-9x=-6+8\n-x=2\nx=-2

Solve the inequality. 6x + 3 > 3x + 30

Answers

6x+3>3x+30

The thing about solving inequalities, you just need to treat the symbol, which is the less than symbol in this case, as an equal sign.

So our problem becomes: 6x+3=3x+30

Now we solve this like a normal algebra problem.

First, get all the variables on one side. Since 3x is smaller than 6x, we'll get rid of that by subtracting it from each side.

3x+3=30 is what we end up with.

Now to get the variable alone and get rid of that constant. To do that, we are going to subtract 3 from each side.

We end up with 3x=27

Now, to get the 'x' alone, we need to divide each side by 3.

x=9 is what we end up.

BUT WE FORGOT TO DO SOMETHING

We started this as an inequality problem, so we need to end it as an inequality solution.

Since there wasn't any negatives we need to worry about (Which is something else entirely) we just need to transfer the symbol we started with down.

x>9


Any Questions?

Please help me with my hw

Answers

part 2 is 12.5 cm represents 5km
I worked this out by doing a ratio
5cm=2km
?cm=5km
you have to do 2 times 2.5 to get 5km so you do 5 times 2.5 to get 12.5cm
so the answer is that 12.5cm
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