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sveticcg [70]
2 years ago
13

X=5 y=7 find the constant of variation

Mathematics
1 answer:
larisa86 [58]2 years ago
3 0
When two variable quantities have a constant ratio, their relationship is called a direct variation. It is said that one variable varies directly as the other.
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22.5 + 7(n−3.4) simplified
NARA [144]
-1.3+7n is the answer
7 0
3 years ago
In Mrs.Hu's classroom, 4/5 of the students have a dog as a pet. Of the students who have a dog as a pet also have cat as a pet.
Travka [436]

Answer:

This problem is incomplete, we do not know the fraction of the students that have a dog and also have a cat. Suppose we write the problem as:

"In Mrs.Hu's classroom, 4/5 of the students have a dog as a pet. X of the students who have a dog as a pet also have cat as a pet. If there are 45 students in her class, how many have both a dog and a cat as pets?"

Where X must be a positive number smaller than one, now we can solve it:

we know that in the class we have 45 students, and 4/5 of those students have dogs, so the number of students that have a dog as a pet is:

N = 45*(4/5) = 36

And we know that X of those 36 students also have a cat, so the number of students that have a dog and a cat is:

M = 36*X

now, we do not have, suppose that the value of X is 1/2 ("1/2 of the students who have a dog also have a cat")

M = 36*(1/2) = 18

So you can replace the value of X in the equation and find the number of students that have a dog and a cat as pets.

5 0
3 years ago
Read 2 more answers
Decrease 160 by 6% .
likoan [24]

Answer:

150.4

Step-by-step explanation:

4 0
3 years ago
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Use properties of operations to find the quotient. -14 ÷ (-4.48)
matrenka [14]

Answer:

3.125

Step-by-step explanation:

-14÷(-4.48)

14÷(4.48)

divide that you will get 3.125

25/8, 3 1/8

is its alternative form.

7 0
3 years ago
Solve for x<br> 5x + 2 = 52
Stolb23 [73]

5x+2=52

5X=52-2

5x=50

5x/5=50/5

X=10

4 0
2 years ago
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