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navik [9.2K]
2 years ago
7

How would you solve for the missing value in a proportion?

Mathematics
1 answer:
RideAnS [48]2 years ago
4 0

Answer:

a/b = c/d

a*d = b*c

Ex:

a/2 = 2/4

4a = 4

a = 1

1/2 = 2/4

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How do u solve this pls help
Leni [432]

Answer is in the picture.

4 0
2 years ago
If y varies directly as x, and y is 48 when x is 6, which expression can be used to find the value of y when x is 2?
sertanlavr [38]

y = ( 48 *2 ) / 6

Step-by-step explanation:

If y varies directly as x they are directly proportional, which means they relate to each other in the same way....

2 : y = 6: 48

what is y if x = 2?

The value of y can be found if you write it a two fracrions

2 : y = 6 : 48

2 / y = 6 / 48

cross multiply the fractions gives

6*y = 48 *2

divide left and right of the = sign by 6 gives the answer:

y = ( 48 *2 ) / 6

(if you solve it you get y = 12 but that was not the question).

Other method:

multiply left and right of the = sign by y

2 * y/y = y *6 / 48

6y / 48 = 2 * 1

multiply left and right of the = sign by 48

6y * 48/48 = ( 48 *2 )

6y = ( 48 *2 )

divide left and right of the = sign by 6

6/6* y = ( 48 *2 )/6

y = ( 48 *2 ) / 6

(if you solve it you get y = 12 but that was not the question).

4 0
3 years ago
Question 3
REY [17]
<span>Question 3 
Solve for d.

13d + 4 = 43
13d = 39
    d = 3

answer
A. 3

</span><span>Question 4 
Solve for r.

4r - 6 = 30
4r = 36
  r = 9

answer

D. 9
</span>

<span>Question 5 
Solve for u.

126 = 6u
u = 126/6
u = 21

answer

B. 21

</span>
4 0
3 years ago
It takes Vanessa a half hour to walk to the library. She leaves her house at 5:00. What time does she get to the library?​
serg [7]
She gets to the library at 5:30. Half an hour is equal to 30 minutes, and if she leaves at 5:00, she will be there in thirty minutes.
4 0
2 years ago
1
nadya68 [22]

Answer:

41 miles per gallon

Step-by-step explanation:

41 miles ÷ 1    

1 gallons ÷ 1

41 miles

1 gallons

41 miles

gallon

41 miles per gallon

*Every number divided or multiplied

by 1 is the same number (1÷1=1 / 2÷1=2)*

3 0
3 years ago
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