Age difference = 15 ÷ 3 = 5
so Caitlin's age is 12 - 5 = 7
Let the nomber of 2 pointers be x and that of 3 pointers be y, then
2x + 3y = 30 . . . (1)
x = y + 5 . . . (2)
Putting (2) into (1), gives 2(y + 5) + 3y = 30
2y + 10 + 3y = 30
5y = 30 - 10 = 20
y = 20/5 = 4
x = 4 + 5 = 9
Prisms and pyramids are solid geometric shapes that have flat sides, flat bases and angles. However, the bases and side faces on prisms and pyramids differ. Prisms have two bases -- pyramids only have one. There are a variety of pyramids and prisms, so not all shapes in each category look the same.
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Answer:
3*x + y = 25
Step-by-step explanation:
Here we have the sentence:
"three times a number (let's call it x) added to another number (let's call it y) gives 25"
We can write this as:
3*x (3 times the first number)
+ y (added to another number)
= 25 (gives 25)
Writing this as an equation, we get:
3*x + y = 25
This is the equation we wanted.
Answer:
Step-by-step explanation:
