Multiply both sides by 3 to cancel out the 3 in the denominator of the left side of the equal sign. You get:

x + 4 = 18

Now subtract 4 from both sides to get variables one side, constants on the other.

x = 18 - 4
x = 14

Your answer is x = 14

8 0

4 years ago

Are the ratios 84/105 and 128/160 proportional? Give two different reasons to support your answer.

Karolina [17]

We have been given two ratios and we are supposed to compare our ratios whether they are proportional or not.

1. We will reduce our fractions to compare our ratios. Let us simplify each of our given fractions.

$\frac{84}{105}$

Let us divide numerator and denominator with greatest common factor. We can see that 21 is GCF of our ratio.

$\frac{4}{5}$

Now we will simplify our second ratio.

$\frac{128}{160}$

GCF of our fraction is 32. Upon dividing our fraction by 32 we will get,

$\frac{4}{5}$

We can see that our both ratios are similar.

2. Now we will find decimal values of our fractions.

$\frac{84}{105}=0.8$

$\frac{128}{160}=0.8$

We can see that $0.8=0.8$ .

Therefore, we can say that our ratios are proportional.

4 0

4 years ago

the Jelly Junior High School color is made by mixing red paint with yellow paint . the ratio of red to yellow is 3 to 5 . how mu

GarryVolchara [31]

To get the answer we can use proportion
3 red ----------------- 5 yellow
x red ----------------- 20 yellow
Crossmultiply now
3*20=5x
60=5x /:5 (divide both sides by 5)
60:5=5x:5
12=x - its the answer

5 0

4 years ago

what is the rate of change in dollars per hour if plumber charges 130.00 for 2 hrs work and 235.00 for 5 hrs work

Umnica [9.8K]

Answer:

Step-by-step explaition:

130 divided by 2 is 65 235 divided by 5 is 47 65 - 47 is 18

6 0

3 years ago