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KiRa [710]
4 years ago
9

How to do ratio questions

Mathematics
1 answer:
Gre4nikov [31]4 years ago
5 0

Answer:

First you need to identify what the known ratio and and the unknown one

Then you need to setup the proportion.

After that cross multiply and then solve

Lastly check your answer by plugging the result into the unknown ratio and you should get your answer.

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Plsss help i’ll give brainliest if you give a correct answer
Nutka1998 [239]

Answer: x = 7

Explanation:

Subtract 8 from both sides to isolate x.

x + 8 = 15

x + 8 -8 = 15 - 8

x = 15 - 8

x = 7

3 0
3 years ago
Read 2 more answers
I need help on the following questions. P>S WARFARE IS AMAZING.
Yuki888 [10]
30)
a)
We have to calculate the highest common factor (HCF) of 21 and 36.
21=3*7
36=2² * 3²
HCF (21,36)=3.
Therefore: the length of the side of the largest pieces into which Juanita and Samuel can cut the pizza must be 3 inches.
Answer:3 inches.

b)
Area (pizza)=21 in * 36 in=756 in²
Area (0ne piece of pizza)=3 in * 3 in=9 in².

number of pieces of pizza=Area pizza / area of one piece of pizza.
number of pieces of pizzas=756 in²/ 9 (in²/piece)=84 pieces.

answer=84 pieces. 

31)
x=number
-x=opposite of number "x"

The opposite of a number sometimes will be greater than the number itself.
if we have a negative number, the opposite of this number will be greater than the negative number.
Example:
x=-10
the opposite of -10 is 10
therefore: 10>-10

If we have a positive number, the opposite of this number will not be greater than the positive number.
Example:
x=10
the opposite of 10 is -10
Therefore: -10<10



8 0
3 years ago
At the end of the night, a restaurant had 3/4 of a large birthday cake left over. The 5 employees each took home the same amount
m_a_m_a [10]

Answer:

3/20

Step-by-step explanation:

This is a division question.

The equation is 3/4 ÷ 5 or, to simplify this, 3/4 ÷ 5/1.

When you divide fractions you have to flip the second number and multiply the two fractions.

So, you have to do 3/4 x 1/5 which is 3/20.

Thus, the answer is 3/20.

Good luck!

8 0
3 years ago
The quadratic equation ax^2+32x+c=0 has exactly one solution. If a+c=130, and a&gt;c, find the ordered pair (a,c).
vitfil [10]
Ie 32^2 - 4ac=0 so ac=256 and a+c=130 
So, that means:2 equations ac=256 a+c=130 ie c=130-a 
So,a(130-a)=256 so 130a -a^2=256 ie a^2-130a +256=0 (a-2)(a-128)=0 
Finally,giving a= 2 or a=128 so, a=2 c=128 or a=128 c=2 
Since, a>c , a=128 and c=2 ie (128,2)
4 0
4 years ago
15 points, no messing around, please do it right
cupoosta [38]

Answer:

416 is your answer!!!

Step-by-step explanation:

mak me brainliest and add me as a fiend

8 0
3 years ago
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