MATHEMATICS HIGH SCHOOL

George found that he blinked 85 times in 15 minutes. at this rate, how many seconds passed during 51 blinks

Answers

Answer 1
Answer: 540 seconds, because this is just a proportion. You find the number of seconds in 15 mins, which is 900 seconds, then you do 85 blinks/900 seconds = 51 blinks/? seconds. You cross multiply and get 45,900=85x. You divide each by 85 to get x=540.
Answer 2
Answer: 1 min = 60 seconds, so
15 min = 15 x 60 seconds = 900 seconds
85 blinks in 900 seconds
900/85 = 10.58 seconds per one blink (this number is rounded, but final answer is exact)
10.58 x 51 = 540 seconds for 51 blinks

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Simplify (3x-7)squared

Answers

9x^2-42x+49... Sorry if I'm too late!

A local mechanic charges customers a flat fee of $60 before any work is done and a rate of $85 per hour of labor which equation represents the relationship between the total charge of labor L in dollars and the number of hours worked H. A.) H=85L+6B.) L=145H
C.) L=60H+85
D.) L=85H+60

Answers

Answer:

L=85H+60

Step-by-step explanation:

i know

Answer:

L=85H+60

Step-by-step explanation:

Subtract 5 from the sum of 8.2 and 0.072?

Answers

(8.2+0.072)-5=8.272-5=\boxed{3.272}
8.272 is the sum of the two numbers
if you subtract five, it is 3.272
Hope it helped:)
So, the answer is 3.272

Four ounces of oregano and 2 ounces of garlic powder are mixed to create a poultry seasoning. Oregano costs $4 per ounce, and garlic powder costs $3 per ounce. The table shows the costs of the ingredients

Answers

For this case, the first thing we must do is define variables:

x: ounces of oregano

y: ounces of garlic powder

We write the function to find the total cost of the mixture.

We have then:

We substitute the following values to find the total cost:

Four ounces of oregano:

and 2 ounces of garlic powder:

Substituting we have:

Answer:

The total cost of the mixture is given by:

c (4, 2) = 22 $
There isn't an obvious question to this problem but with the given we can assume what is to be asked. I think we are to find the total cost of a certain poultry seasoning. The poultry seasoning would have a total weight of 4+2=6 ounces. The total cost will then have to be 4(4) + 2(3) = 22 dollars. 

help please !!!Kevin wants to make a mixture that is 50% lemon juice and 50% lime juice. How much 100% lemon juice should he add to a juice that is 40% lemon juice and 60% lime juice to make 6 gal of the 50% lemon/50% lime juice mixture?

Answers

so basically, he wants to make mixture where lemon=lime

it is 6 gallons so
40% of 6=0.4 times 60=2.4=lemon
60% of 6=0.6 times 60=3.6=lime
so to make them equal
3.6-2.4=1.2
he must add 1.2 gallons of 100% lemon juice to make a mixture of 50% lemon and 50% lime

1.2 gallons is the answer

Question: Kevin wants to make a mixture that is 50% lemon juice and 50% lime juice. How much 100% lemon juice should he add to a juice that is 40% lemon juice and 60% lime juice to make 6 gal of the 50% lemon/50% lime juice mixture?

Answer: 1 Gallon

The sum of a number is 17 and their difference is 3 find the number​

Answers

Answer: 14

Step-by-step explanation:
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Challenger Elementary School has 800 students. Every Wednesday, 12%, percent of the students stay after school for Chess Club.How many students attend Chess Club on Wednesdays?
Evaluate the expression 36y + 9 if y =1/6
Adam’s sister wants to watch her intake of fat per day.He estimates that the dinner will have 48 grams of fat. What percentage of her total daily allowance of fat will the dinner be with a daily allowance of 70g ?