Answer:
The ratio of red marbles to yellow marbles will be: 2 : 20 or 1 : 10
Step-by-step explanation:
As from the information
- The ratio of red marbles to blue marbles is 1 : 4.
- The ratio of blue marbles to yellow marbles is 2 : 5.
Multiply the ratio of red to blue marbles with 2.
1 : 4 = 1 × 2 : 4 × 2 = 2 : 8
Multiply the ratio of blue marbles to yellow marbles with 4.
2 : 5 = 2 × 4 : 5 × 4 = 8 : 20
Now the ratio of red : blue : yellow marbles will be:
2 : 8 : 20
Therefore, the ratio of red marbles to yellow marbles will be:
2 : 20 or 1 : 10
Keywords: ratio, fraction
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Answer:
m – 12 = 20
Step-by-step explanation:
We see "equals 20", so we can automatically write:
= 20
Whenever something says "than", that means the two things they're saying need to be flipped. For example, 5 less than 1 would be 1 - 5.
So "12 less than a number <em>m</em>" would be m – 12.
Putting it all together would be:
m – 12 = 20
Answer: this one is confusing
Step-by-step explanation:
Answer:
(-2, 0)
Step-by-step explanation:
Use elimination: add the two systems. Because the left is equal to right, you are adding the same thing and it's legal.
-x+3y=2
+ (x+y=-2)
Add each term
-x+x + 3y+y = 2+ -2
4y=0
y=0
x+y=-2
x+0=-2
x=-2
Answer:x=
−1
2
y+
5
2
Step-by-step explanation:
Step 1: Add -y to both sides.
2x+y+−y=5+−y
2x=−y+5
Step 2: Divide both sides by 2.
2x
2
=
−y+5
2
x=
−1
2
y+
5
2