A tub contains red, yellow and blue counters. There is ten more yellow than red counters, and the ratio of red to blue counters
1 answer:
Answer:
5/12
Step-by-step explanation:
A ratio of 3:4 means that red counters make up 3/7 of the sum of red and blue counters and blue counters make up 4/7 of the total sum of red and blue counters.
If there is 20 blue counters, then 20 is 4/7 of the sum of the total red and blue counters.
So we need to solve for the total sum.
So the total amount of red and blue counters are 35,
So this means the amount of red counters is 15.
The amount of yellow counters is 25.
So the total number of counters are 60.
So P(Yellow counters)= 25/60= 5/12
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2 Answers:
Choice C) It will use a closed circle
Choice D) The ray will move to the left
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Explanation:
The inequality means that x = -8 or x < -8. Since we're including -8 itself, which is the endpoint, we'll use a closed circle. In contrast, an open circle would be used if the inequality was
to exclude the endpoint -8.
The ray is to the left because we're visually describing all values smaller than -8. Such example values are -10 and -22 as these values are to the left of -8 on the number line.
In short, the graph consists of a closed circle at the endpoint -8 and the arrow is to the left. We can say the shading is to the left.