Ken walked 300 feet at 4ft/s and then walked 250 feet at 5ft/s . How long did he walk?

A.
50 seconds

B.
125 seconds

C.
20 seconds

D.
550 seconds

Answers

Answer 1

Answer: 300 ft at 4 ft /s
= 300/4= 75 seconds
then he walked 250ft at 5ft/s
= 250/5
= 50 seconds
in total he walked 75+50 = 125 seconds
Therefore the answer is B) 125 seconds

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Answers

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One serving of this cereal provides you with 160 mg of sodium. This is 7% of your body's daily needs. How many milligrams of sodium equal 100%?

Answers

First, we see the closest multiple of 7 under 100 is 98 and that divided by 7 is 14. there are 2/7 as our remainder. We do 2/7 times 160 to get 320/7 and 320/7 = 45 and 5/7. We convert 5/7 into a decimal like 5/7 = .7. The answer is 45.7 milligrams of sodium.

HELP HELP HELP HELP HELP HELP HELP HELP HELP

Answers

The first one is the correct answer :)

What is the mean of 72,73,86,59,75,58,50,55

Answers

MEAN

Mean is the average. To find the mean of a data set, you have to add all the numbers and divide the sum by the amount of numbers you added.

In this equation, you have 8 numbers. That means you will be dividing by 8.

The first thing you need to do is add all the numbers. Add:

$72+73+86+59+75+58+50+55 = \bf 528$

Now that you have added all the numbers and got the sum, divide by 8. Remember that you will be dividing by 8 since you added 8 numbers.

Divide:

$528 / 8 = \bf 66$

The mean is 66

If you have any questions, feel free to ask in the comments! :)

The answer is 66.

Step by step explanation:
First, add all of the numbers together.
Then, divide the sum of the numbers by the number of entries you see.

Since there’s 8 numbers, you divide it by 8.

Please help with these math questions

Answers

1.
a^2+b^2=c^2
easy
a=a
b=13
c=21
a^2+13^2=21^2
a^2+169=441
minus 169 both sides
a^2=272
sqrt both sides
a=16.4924
D is answer

2. same thing
a=18
b=26
18^2+26^2=c^2
324+676=c^2
1000=c^2
sqrt both sides
31.6228=c
C is answer

3.
one way is to plug them in
remember that hypotonuse is longest side
A. 7^2+24^2=25^2, is that true?, yes it is treu
answer is A

4.
legs are 6 and 4
a=6
b=4
c=x
4^2+6^2=x^2
16+36=x^2
52=x^2
sqrt both sides
7.2111=x
7.2=x

5.c=20
a=x
b=14

x^2+14^2=20^2
x^2+196=400
minus 196 both sides
x^2=204
sqrt both sides
x=14.2829
x=14.3

1. D
2. C
3. A
4. 7.2
5. 14.3

You have eight coins in your pocket that equal $1.02. What are the eight coins?