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gladu [14]
3 years ago
13

Mr Dominguez spends three weeks training for a marathon. Every day he runs 1/2 mile more than the day before. If the first day h

e ran 6 miles, how many will he run on the 21st day?
Mathematics
1 answer:
barxatty [35]3 years ago
3 0
Answer: 16 miles


Explanation:
I believe it would be 16 miles, if he starts off at 6 miles on day one and goes up 1/2 mile every day, he would be up a mile every other day, basically on day 3 he would be at 7 and day 5 at 8 miles, if the pattern continues he would be at 16 miles by day 21.
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10 points?...1) must be quick to answer,2) must be reasonable answer,3) Show explanation for your answer
Ilia_Sergeevich [38]
Your answer is
{x}^{2}  \div   {2} {z}^{9}
because the numbers raised to negative powers must be flipped over the divisor to become positive. Then, when multiplying 2 and z, you add their exponents.
3 0
3 years ago
Find x<br><br> show steps too please<br><br> will give brainliest
9966 [12]

Hello from MrBillDoesMath!

Answer:   x = 7/10

Discussion:

To eliminate fractions multiply each side by 10:

10 ( 9/5x - 2/5 )  = 10 * ( 8x +3)/10      or

10 * ( 9/5)x - 10 *(2/5)  =   8x + 3  or

9 *2 x - 2*2 = 8x +3   or

18x - 4 = 8x + 3.  Subtract 8x for each side:

18x - 8x - 4 = (8x - 8x) + 3 or

10x -4 =  0x + 3 or

10x -4 = 3 or

10x = 7

x = 7/10




Thank you,

MrB

7 0
3 years ago
5
levacccp [35]
Easy hijdbggffafaysuwus
6 0
2 years ago
Evaluate this pleaseeeee
Alla [95]
Answer:

It would be 3

Explanation:

Let me know if it’s right and ask questions if you have any!
5 0
3 years ago
Bill wanted to know how many times students at his middle school go to the beach each week during the summer. He surveyed every
pshichka [43]

The survey was intended for Bill's middle school during the summer. The

survey was administered to students of other schools on a Saturday.

  • The type of error is the <u>selection bias error</u>.

Reasons:

The type of error made is a non sampling error, given that the target of the

study is the number of times in a week students at his middle school

attend the beach during the summer.

The errors are; Selection bias error.

  • The given that the students survey are not from his middle school.
  • The survey was carried out once on a Saturday, where the target was during the summer.

The selection bias error is a type error that is due to the researcher

chooses what to study, such that the participant have common

characteristics rather than being random.

Learn more about selection bias error here:

brainly.com/question/13727092

7 0
2 years ago
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