MATHEMATICS HIGH SCHOOL

8. If f(x) = 5x - 8, what is the value of f(3)?

Answers

Answer 1
Answer:

Answer: f(3) = 7

Step-by-step explanation:

f(3) = 5(3) - 8

15 - 8

f(3) = 7
Answer 2
Answer:

Hey there!☺

Answer:\boxed{f(3)=7}

Explanation:

What is the value of f(3) when f(x) = 5x - 8?

If you want to find to find the value of f(3), you will have to substitute the value in the function. And at last, you will evaluate. After you evaluate, you will get the answer.

f(3)=7

Hope this helps!

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Find the quotient. Write your answer in simplest form.

1/3 ÷ 6= 1/18?

Answers

If you would like to solve 1/3 / 6, you can do this using the following steps:

1/3 / 6 = 1/3 / 6/1 = 1/3 * 1/6 = 1/18

The correct result would be 1/18.

Answer:

1/18

Step-by-step explanation:

1.Read the complete problem before answering. Teresa bought gallons of chocolate milk at the dairy farm. Chocolate milk cost $4.50 a gallon. How much did Teresa spend on the milk?

A student solved the problem this way.

gallons = 2.5 gallons
Let n represent the amount Teresa spent on the milk.
n = 2.5 × $4.50
n = $11.25
Teresa spent $11.25.

Use a similar strategy to solve this problem.

Pedro bought lb of red sand and lb of brown sand to refill his sand box. Both types of sand cost $4.60 a pound.

How much did Pedro spend on the sand? Read the complete problem before answering.

Gilles had gallon of paint. How many quarts of paint did Gilles have? 2. (1 gallon = 4 quarts)

A student solved the problem this way.

1 gallon = 4 quarts
Multiply the number of gallons by 4.
gallon = 2 quarts

Use a similar strategy to solve this problem.

Barbara made a punch by mixing quarts of ginger ale with quarts lemonade.

How many pints of punch did Barbara make? (1 quart = 2 pints) 3.Read the complete problem before answering.

Mark had a ribbon that measured yards. How many feet of ribbon did Mark have? (1 yard = 3 feet)

A student solved the problem this way.

1 yard = 3 feet
Multiply the number of yards by 3.
yards = 13 feet

Use a similar strategy to solve this problem.

Julie had two strips of Velcro that measured yards and yards.

How many feet of Velcro did Julie have? (1 yard = 3 feet) Read the complete problem before answering.

Patty had gallons of milk left in the refrigerator. How many quarts of milk did Patty have left? (1 gallon = 4 quarts)

A student solved the problem this way.
1 gallon = 4 quarts
Multiply the number of gallons by 4.
gallons = 9 quarts

Use a similar strategy to solve this problem.

Isaac jogged for hours in the morning and hours during lunch.

How many minutes did Isaac jog that day? (1 hour = 60 minutes)

Answers

o.o

I think it'll be better if you put one question at a time....

( I'm gonna go and follow it like the last problem we did, where we assume the amount bought or made in the 1st part of a problem will be the same amount in the second part of the problem. )


1. $4.6 * amount/pounds bought in total

( Since in part 1, Teresa bought 2.5 gallons... )

2.5 pounds of red sand and 2.5 pounds of brown sand = 5

$4.6 * 5 =$23


2.  ( Giles had 2 quarts in total )

2 quarts of ginger ale + 2 quarts of lemonade= 4 quarts, and 1 quart = 2 pints, so 8 pints

3. ( 4.33 yards since in the first part, Mark had 13 feet, and 13 feet= 4.33 yards )

So we assume Julie has 2 pieces of Velcro and each are worth 13 feet ( like Mark ). 13 * 2 = 26 feet

4. ( Patty had 9 quarts, and one gallon = 4 quarts, so she had 2.25 gallons ) 

So, we assume 8 in the morning and 9 during lunch, since the part 1's answer was 9. 9*2=18 hours, 18 hours = 1080 minutes


*Please tell me if I was correct or incorrect and why when you get the answers back*

Again, I state that there's a chance that these problems may be wrong, but you cannot blame me, since you insisted I come and help.

in a recent survey, 336 out of 500 people chose reallygood cola as their favorite soft drink. If a similar survey was conducted out of 2,000 people, how many people would choose reallygood cola as their favorite soft drink? explain.

Answers

In the first survery (336)/(500) considered cola.
Assuming we can extrapolate this ratio, all we have to do is get the same ratio, but out of 2000 people.
(336)/(500) * (4)/(4) \n (1344)/(2000)
The answer is 1344 people.

Describe how you solved the following problem:I have a jar filled with $100 worth of quarters, nickels, and dimes. 

I have the same amount of each type of coin. How many total coins do I have in my jar? 

Answers

first you make sure you have all your variables using same measurement - cents (since it is the smallest)

$100 = 100*100 cents = 100,000 cents
1 quarter = 25 cents
1 nickel = 5 cent
1 dime = 10 cents

the test of your problem said that:
     you have $100     in       i don't know how many coins   of quarters, nickels and dimes
         100,000          =                    X                            *      (25+5+10)


we have to find X:

100,000= X *(25+5+10)
100,000= X *40
X= 100,000/40
X = 2,500 coins

-7 - 7 ( 8x - 7 ) = - 19 + 5x

Answers

-7 - 7( 8x - 7 ) = -19 + 5x
⇔ -56x + 49 = -12 + 5x
⇔ -61x = -61
⇔ x = 1

4/7 x 1/3 x 7/8= A.1/24 B.1/6 C.2/3 D.6

Answers

(4)/(7) * (1)/(3) * (7)/(8)

(28)/(168)

simplify

(1)/(6)

the answer is B :) 
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