1. Kellie and her sister are training for a marathon. Kellie ran 10 mi in 75 min. Ashley ran 15 mi in 120 min. Which statements are true? Show your work. If a statement is not true, explain why. Show your work.
(a) Kellie’s minutes per mile pace was faster than Ashley’s minutes per mile pace.
(b) Kellie ran 8 mph.
(c) Ashley ran 12 mi in 90 min.
(d) Ashley’s total time was 4 min slower than Kellie’s total time after they ran 9 mi.

Answers

Answer 1

Answer: Given the data above, Kellie's speed is 2/15 mi/min and Ashley's is 1/8 mi/min. The false statement among the choices is letter c which states that Ashley ran 12 mi. in 90 min. Based on Ashley's data, she ran only 0.125 mi per minute. This means that in 90 minutes, she ran only 11.25 miles. Therefore, the answer is letter c.

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Chet's father is five times as old as Chet. In six years, his father only be three times as old. How old is Chet now?

Answers

12 bc if u take a random number like 6 times it by 5 you get thirty so his dad is 30 years old and chet is 6 then add six years and chet is 12 and his dad is 36 and 12 goes into 36 3 times. I hope this helped. :-)

Simplify.(x^2 + 5^x + 8)(x^2 + 2^x + 6)

A. x4 + 10x2 + 48
B. x4 + 2x3 + 6x2 + 7x + 14
C. 2x2 + 7x + 14
D. x4 + 7x3 + 24x2 + 46x + 48
Can you also explain?

Answers

Pretty sure it is A. x4+10x2+48
Because:
If you multiply x^2 by X^2= x4
if you multiply 5^x by 2^x- 5*2=10 and x*x= x2 so it makes 10x2
and then 8*6=46
so if you put that all together then it is x4+10x2+48

(x² + 5x + 8)(x² + 2x + 6)
(x^4 + 2x³ + 6x² + 5x³ + 10x² + 30x + 8x² + 16x + 48)
(x^4 + 2x³ + 5x³ + 6x² + 10x² + 8x² + 30x + 16x + 48)
The answer to your problem is D. x^4 + 7x³ + 24x² + 48x + 48.

Kofi estimated that he would run a total of 10 km in 1 h. In 1 h, he actually ran 46 times around a track 0.25 km long, going a total distance of 11.5 km.What was the percent error in Kofi’s estimate? Round to the nearest tenth of a percent, if necessary.

A.
1.5%

B.
5%

C.
13%

D.
23%

Answers

The equation to find percent error is

$(actual-theoretical)/(theoretical)*100$

where actual is the value that actually came out (in this case, 11.5 km) and theoretical is the value that was supposed to come out (in this case, 10 km). Just plug in the numbers and simplify.

$(actual-theoretical)/(theoretical)*100\n\n(11.5-10)/(10)*100=(1.5)/(10)*100=15\%\ error$

So, the true answer would be 15%. Apparently, the question you're asking takes 11.5 as the theoretical and the 10 as the actual (which I personally disagree with)

If you plugged in the numbers that way, the answer comes out to 13.04%. So, the correct answer for your answer choices is c. 13%

Which sentence uses punctuation correctly? A. The Acorn Festival, which is held every October, is my favorite event. B. The Acorn Festival which is held every October is my favorite event. C. The Acorn Festival which is held every October, is my favorite event.

Answers

The answer is C. A and B doesn't use commas correctly.

The correct answer is 'a' because the commas are used correctly to separate the dependent clause 'which is held every October. It can easily be removed and you would be left with the independent clause 'The Acorn Festival is my favorite event.

Help?
Solve 2x - 8 < 7

Answers

The solution of the equation is x < 15/2.

What is an equation?

An equation is an expression that show the relationship between two or more numbers and variables.

A mathematical equation is a statement with two equal sides and an equal sign in between.

One solution was found as

x < 15/2

The equation by subtracting to the right of the greater than a sign from both sides of the inequality :

2x-8-(7)<0

Divide both sides by 2

x-(15/2) < 0

Solve Basic Inequality here

2.000 x - 15.000 < 0 x < 15/2

One solution was found as x < 15/2

Learn more about equations here;

brainly.com/question/25180086

#SPJ2

One solution was found : x < 15/2

Rearrange:

Rearrange the equation by subtracting what is to the right of the greater than sign from both sides of the inequality :

2*x-8-(7)<0

Divide both sides by 2

      x-(15/2) < 0

Solve Basic Inequality : 1.2    Add 15/2 to both sides

Inequality plot for

2.000 x - 15.000 < 0 x < 15/2
One solution was found :                   x < 15/2

Use an inch ruler, What is the length to the nearest inch

Answers

5 milimeters is the answe

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