Step-by-step explanation:
First Multiply two of the numbers, for example, 15 x 6 and then multiply that by the last number, 90 x 13 and thats your answer. Hope it helps!
Answer: C
Step-by-step explanation:
Answer:
ok
Step-by-step explanation:
<h3><u>Dave is 96 years old.</u></h3><h3><u>Jim is 32 years old.</u></h3><h3><u>Bill is 64 years old.</u></h3>
d = 3j
j = 1/2b
64 = (d + j + b)/3
d = 3(1/2b)
d = 1.5b
64 = (1.5b + 1/2b + b)/3
Combine like terms.
64 = (3b)/3
Multiply both sides by 3.
192 = 3b
Divide both sides by 3.
64 = b
Because we have the value for b we can plug it into the other equations to solve for the other ages.
j = 1/2b
j = 1/2(64)
j = 32
d = 3j
d = 3(32)
d = 96
#18. C. 1&3
This is be cause when you simplify to y=.. for 4y=3x and 8y=6x, they both turn out to be y=3/4x. The constant of proportionality is 3/4 because both equations simplify to have that as a constant.
#19. D
Kathy can add less than or equal to 7 books to her suitcase.
To cross off the first two choices(A&B), you input a number above 7 and then multiply it by 1 3/4 . Add it to 37 1/2 and it will be more than 50, meaning it will not fit since the suitcase can’t have more than 50 pounds in it.
To cross off C, you would multiply 1 3/4 by 7 and get 12.25. Add 12.25 to 37 1/2 and you will get 49.75 . This result would mean that you can have less than 7 books or just 7 books, leaving the answer to be D.
