Solve the proportion

Answers

Answer 1

To solve this, you need to cross multiply the fractions.

Let’s say you have these fractions:
A / B = C / D

To cross multiply, multiply the denominator of the first fraction (B) by the numerator of the second fraction (C). Multiply the numerator of the first fraction (A) by the denominator of the second fraction (D).

You get B x C = A x D

After cross multiplying your fractions, you get 63 = 7(c +4)

Distributing the 7 into c+4 gives you this:
63 = 7c + 28

Now solve this like a normal equation with a variable

63 = 7c + 28
35 = 7c
5 = c

To double check that, plug c = 5 into the original equation.

1/(5) + 4 = 7/63
1/9 = 7/63

7/63 simplifies into 1/9 (7:7 = 1, 63/7 = 9)

1/9 = 1/9 so c = 5 is correct

Related Questions

A roulette wheel consists of 18 red slots, 18 black slots, and 2 green slots. A player can wager $1 that a marble will land in a red slot, in which case the player would gain a $1. If the marble lands in a slot that isn't red, then the player loses their $1 wager. Let X represent the player's gain from a random $1 wager on red. Here's the probability distribution of X along with summary statistics:
Lose Win
X = gain (S) -1 1
Р(X) 20/38 18/38
Мean: Ax-$0.05
Standard deviation: ax$1.00
Suppose a player decides to wager $5 instead of winning $5.
Let Z represent the player's gain from a random $5 wager on red. possible outcomes become either losing or , so
What are the mean and standard deviation of Z? dollars?

Answers

Answer:

-$0.26 ; $5

Step-by-step explanation:

Given that :

____________ Lose ______ Win

X =$1 _______ - $1 ________ $1

P(X) _______20/ 38 _____ 18/38

Mean, Ux = - $0.05

Standard deviation, σx = $1.00

If the wager is $5 instead of $1

Mean = Σx*p(x)

Mean = (-5 * 20/38) + (5 * 18/38)

Mean = - 2.6315789 + 2.3684210

Mean (μ) = −0.26

Standard deviation :

Sqrt(Σx²p(x) - μ²)

[(-5^2)*(20/38) + (5^2)*(18/38)] - (-0.26^2)

(13.157894 + 11.842105) - 0.0676

= 24.999999 - 0.0676

= sqrt(24.932399)

= 4.9932353

= 5

Need help ASAP please!

Answers

Answer:

Step-by-step explanation:

See the attached image.

Can somebody help me?

Answers

1.) -12b + 6c + 18
2.) 6(-2b +c+3)
3.) 6( -2(-2) + (-3) +3)=
6(4-3+3)=
6•4=24

What is the slope of the line perpendicular to
y=3x-12

Answers

Answer: y-3x=12. y=3x+12. If the line is perpendicular it means its slope is the negative reciprocal of the given lines slope. m = 3 negative reciprocal = -1/3. So the slope of the equation of the line

Step-by-step explanation:

Answer:

-1/3

Step-by-step explanation:

(-1)(m)^(-1)

this is the way to make a slope perpendicular

y=mx+b

m=slope

b=y-intercept

so:

(-1)(3)^(-1)

-1/3 is the slope of the line that is perpendicular to y=3x-12

Hope that helps :)

Please give brainliest

Given the balanced equation representing a reaction:

2H2 + O2 > 2H2O

The oxidation state of hydrogen in this reaction changes from

A)
–1 to +1

B)
–1 to +5

C)
0 to +1

D)
+5 to –1

Answers

Answer: The correct answer is A) -1 to +1

Can someone please help meee

Answers

Answer:

90 degrees

Step-by-step explanation:

If two angles are supplementary they are a linear pair which means they form a straight line, and if you know a straight line equals 180 degrees which is the total degrees of a triangle.

Now if you have two supplementary angles and they are congruent that means not only are they right angles but its half of 180 so you divide these pair of 2 by 180 giving you your total of 90 degrees.

Have a nice rest of your day !

Donna and Darcy collected newspapers for recycling. Donna collected 5 3/4 pounds of newspaper. Darcy collected 2 1/4 pounds of newspaper. How much newspaper did they collect between them?

Answers

Answer:

8 pounds

Step-by-step explanation:

5 3/4 + 2 1/4 = 7 4/4 = 8

FIRST TO ANSWER GETS BRAINLIEST!!!
Find the y-intercept of the following line:
y=−8x+7

Answers

The y intercept is 7

Answer:

Step-by-step explanation:

y = mx + b

The y-intercept is b.

y = -8x + 7

The y-intercept is 7.

HELP HELP HELPPPP SOMEONE PLEASE-

Answers

Answer:

Its B

Step-by-step explanation: very ez

Answer:

B. All of these statements are true

Step-by-step explanation:

$10 is the smallest amount shown, therefore a is correct.

$25 is the greatest, so c is also correct

and a majority of the tickets start at $15, making d correct

What fraction of the shape is shaded?

Answers

Answer:

1.75/8 would be your answer if im right.

Answer:

dude I want the same ans can anyone help plzz

Can someone answer this please!!! I only have 5 mins and u will get Brainly too :)

Answers

Answer:

18 units square

Step-by-step explanation:

Given

The attached trapezium

Required

Determine the area

From the attachment, the height, h is:

[tex]h = 3\ units[/tex]

And parallel sides are:

[tex]s_1 = 3[/tex]

[tex]s_2 = 9[/tex]

So, the area is calculated as:

[tex]Area = \frac{1}{2}(s_1 + s_2) * h[/tex]

[tex]Area = \frac{1}{2}(3 + 9) * 3[/tex]

[tex]Area = \frac{1}{2} * 12 * 3[/tex]

[tex]Area = \frac{36}{2}[/tex]

[tex]Area = 18[/tex]

Write the pair of fractions as a pair of fractions with
common denominator
1/2 and 1/3

Answers

2/10 = 3/10, 2/5 = 4/10

Answer:

3/6 & 2/6

1/2 x 3, 1x3=3, 2x3=6, so it's 3/6.

1/3 x 2, 1x2=2, 3x2=6, so it's 2/6.

Q1: A number minus 4 is greater than 2 times a number

Answers

Answer:

x - 4 > 2x

(see below to solve for x if needed)

Step-by-step explanation:

"Greater than" is key word for the greater than symbol: >.

"A number" can be represented by x.

So "a number minus four" would be x - 4 and "two times a number" would be 2x.

So "A number minus 4 is greater than 2 times a number" is:

x - 4 > 2x

If you were to solve for x, it would be:

x - 4 > 2x

-x -x

-------------

-4 > x

x < -4

What is the average of 100, 54 and 88?

Answers

Answer:

about 80.6

Step-by-step explanation:

(100+(54+88))/3

The answer is 80.67 round to the nearest tenth place btw

Find the solutions for 6x^2 -7x-20=0

Answers

Answer:

x=5/2, x=-4/3

Step-by-step explanation:

Angie has 3 pink bows, 1 blue bow, and 6 purple bows in a box. She will randomly choose 1 bow from the box.
What is the probability Angie will choose a purple bow?

Answers

60%
Ex:6+3+1=10
6/10 bows are purple
6/10 = 60/100 or 60%

Data represented by quantities is called data.

Answers

Four types of data (nominal, ordinal, interval, and ratio) that represent values or observations that can be sorted into a category

A school earns $70 from selling 50 tickets for the school play. Each ticket costs the same price.
How much does the school earn for one ticket ??

Answers

70/50= 1.4
$1.4

ANSWER CHECK:
1.4x50
=70

A label that wraps around a box of golf balls covers 75 percent of its lateral surface area. What is the value of x?

Answers

Answer:

To find the area of the rectangular prism, use the formula:

A = width x height x length

A = 2 x 2 x 3

A = 12

Now multiply A with 0.75

12 x 0.75 = 9

x = 9 in³

hope this helps

Step-by-step explanation:

so its 8p = 56 is the frist bit and the second is 7. BOOM

Answers

p=7, I don't know if this is a question or not

Please help ASAP!!!!

Answers

Answer:

-4

Step-by-step explanation:

32÷-8=-4

Find the slope of the line.

Answers

Answer:

Step-by-step explanation:

Any horizontal line has a slope of 0.

1 half of 4 over 5 = ____ fifth(s)

Answers

Answer:

2/5

Step-by-step explanation: 1/2 of 4/5 = 2/5

potrzebuję na teraz pls

Answers

Answer:

I don't know what is this

what is the value of 4/15 divide 2/3

Answers

Answer:

0,4

Step-by-step explanation:

4/15 : 2/3 = 4/15 × 3/2 = 2/5 × 1 = 0,4

Shawna went shopping at the thrift store yesterday and came home with 12 items and she only spent $31.50. She only got shirts and pants. If each shirt cost $2 and each pair of pants cost $3.50, which system of equations would represent this situation?

Answers

Assuming pants=x and shirts=y

2y+3.50x=31.50 and 2y= 31.50-3.50x

I hope this helps you out!

A jar contains 666 red jelly beans, 666 green jelly beans, and 666 blue jelly beans.
If we choose a jelly bean, then another jelly bean without putting the first one back in the jar, what is the probability that the first jelly bean will be green and the second will be green as well?

Answers

Answer:

666/1998 x 665/1997 = 665/5991 or 0.110999833083

A cyclist starts from the point si = (7, 7, 4) at t = 0 and moves with a constant velocity of v → =(4, 5, 5) and cyclist motion can be depicted by the expression, s = si + vt which gives position vector of cyclist. Determine the distance travelled by the cyclist between t = 4 s and t = 23 s. (Distance is in meters)
A. 154.36 m
B. 157.36 m
C. 152.36 m
D. 155.36 m

Answers

Answer:

A. 154.36 m

Step-by-step explanation:

I got it "Correct"

Answer:

A. 154.36 m

Step-by-step explanation:

Have a great day

Which expression is equivalent to b less than 50?
A 50b
B b - 50
C 50/b
D 50 - b

Answers

Answer:

50-b

Step-by-step explanation:

Whatever letter/number it begins with, it's that minus the second letter/number.

Page 153
30. A car's value is a function of many things,
including the total mileage on the car. The
following graph illustrates the depreciation of a
car as more miles are driven. Find the value of
f(50,000) and explain its meaning. What is the
range of this function?
Car's valde
$14,000
$12,000
$10,000
$8.000
$6,000
$4,000
$2,000
$0
20,000 40.000 60.000 80.000 100.000 120,000
Mileage

Answers

If you’re on plato the answer would be c

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