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Bumek [7]
3 years ago
7

How do you solve proportions with ratios with a letter

Mathematics
1 answer:
Leona [35]3 years ago
5 0
SORRY if its too late. 

Proportions with variables: 

let's look at an example from my homework hehe 

.3:4=9:y 
First, you change the ratios to fractions. 
.3/4=9/y. 
4 times 9 is 36. I multiplied the numerator of 9/y and the denominator of .3/4. 
You also do this with the other numerators and denominators. .3 times y= 36. (Both equations have to equal the same number) if you don't know the answer, just do 36 divided by .3. The answer is 120. 
y=120



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Explain how to round 14 5/6 to the nearest whole number, using the number line as a tool. Use complete sentences in your answer.
ehidna [41]

Answer:

15

Step-by-step explanation:

From the given information:

The distance of one consecutive number on a number line to the other is usually 1.0.

To round up 14 5/6 to the nearest whole number, we need to take a proper look at the improper fraction 5/6.

We know that:

6/6 = 1

3/6 = 0.5

5/6 is more than 3/6 and the decimal form is approximately 0.8

Thus 14+0.8 = 14.8, and that is approximately 15 on a number line.

3 0
3 years ago
What is the perimeter of the circle with a missing sector of 40% and a radius of 3? 16.74 units 18.84 units 2.09 units d 22.74 u
Sergio039 [100]

Answer:

11.3097335 seems to have nothing with the question so the answer is

B) 18.8495559

Step-by-step explanation:

to find the perimeter (circumference?) do 2pi(r)

2 pi 3 = pi 6 = 18.8495559

since there is 40 percent missing, multiply the perimeter by 60% (part not missing)

18.8495559 * 60%

11.3097335

8 0
3 years ago
Answer 2 please<br> BRAINLIEST BRAINLIEST
Kitty [74]
I really wished I knew but I haven’t learned that yet:(
4 0
3 years ago
Read 2 more answers
1 \ 3 ( 24p - 66) = 3p + 43
NeTakaya
1/3(24p-66) = 3p + 43= 1/3*24p-1/3*66=3p + 43= 8p-22=3p + 43=8p - 3p=43+22=5p=65=p=65/5=13 hope this helped!

6 0
3 years ago
Justin weighs 15 pounds less than Greg weighs. Half of Greg's weight is 75 pounds less than Justin's weight. How much does each
solniwko [45]

Answer:

justin = 135 & greg = 150

Step-by-step explanation:

equations:

(justin is 15lbs under greg) j-15=g

(find gregs full weight by doubling bc the problem gave you half) 75*2=150

(plug in gregs wieght to find justins weight) j-15=150 -> j=135

7 0
3 years ago
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