MATHEMATICS MIDDLE SCHOOL

The first hiker has gone 125 ft and hikes at a rate of 1.2 ft per second. The second hiker has gone 10ft and hikes 2.6 ft per second. after about how many seconds will the hikers have gone the same distance82 seconds
90 seconds
73 seconds
67 seconds

Answers

Answer 1
Answer:

Answer:

82 seconds

Step-by-step explanation:

(1.2*82)+125=223.4

(2.6*82)+10=223.2

These are the closest. If you are estimating this is the right answer

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Anita tosses 3 coins. what is the probability that all the coins will land tails up?

How much is 500 seconds?

Answers

If I'm not mistaken I think that it is 8 minutes and 33 seconds
8 minutes and 20 seconds or 8.3333 minutes

What is the degree of the power function represented in the table?Please show all work :)thx

Answers

Answer: It's 2, I took the test

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

-2+1= -1

4-3=1

-3/1= -3

Conrad has a collection of three types of coins: nickels,dimes,and quarters.There are five more nickels than quarters but four times as many dimes as quarters.If the entire collection is worth $5.85,how many nickels,dimes,and quarters are there?

Answers

n=number of nickles
d=number of dimes
q=number of quarters
use cents for everything

total value=585
5n+10d+25q=585
divide everybody by 5 to simplify
n+2d+5q=117

we have

nicles are 5 more than quarters
n=5+q

4 times as many dimes as quarters
d=4 times q
d=4q

sub those in
5+q+2(4q)+5q=117
5+6q+8q=117
5+14q=117
minus 5
14q=112
q=8

sub back
n=5+q
n=5+8
n=13

d=4q
d=4(8)
d=32


13 nickles
32 dimes
8 quarters
divide both sides by 22

The safe fluoride-to-water ratio is 0.5 to 1.4 parts per million (ppm) gallons. What is the range in parts of fluoride that could be added to 500,000 gallons of water?

Answers

Answer:

250,000 to 700,000 parts

Step-by-step explanation:

For the lower ratio of 0.5, we have to get 0.5 flouride parts/1 gallon of water equivalent to (some fluoride parts)/ (500,000 gallons of water). we can multiply 500,000 by 0.5 to get 250,000 as our lower limit. Similarly, we can multiply 500,000 by 1.4 to get 700,000 as our upper limit

Simplify 12n-2n⁴-10n-2n⁴+n

a. 4n⁴+3n
b. 3n
c. -4n⁴+3n
d. -n¹¹

Answers

The answer is C. -4n⁴+3n.


Separate the expression by its like terms.

12n-2n⁴-10n-2n⁴+n

12n+(-10n)+n=3n

-2n⁴+-2n⁴=-4n⁴


The simplified expression comes out to -4n⁴+3n.

Answer:

C

Step-by-step explanation:

What is the volume?

Plzzz help

Answers

Answer:

618.75 yd

Step-by-step explanation:

12 3/8 = 12.375

12.375 X 10 X 5 = 618.75
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