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Dmitrij [34]
3 years ago
13

Maria does weightlifting for 30 seconds and then aerobics for 60 seconds. She repeats this 10 times. If she does not take any br

eaks, how many minutes does she exercise?
Mathematics
2 answers:
olga2289 [7]3 years ago
5 0
It took 15 minutes !!
VikaD [51]3 years ago
3 0

Answer:

15 minutes

Step-by-step explanation:

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5th grade math. correct answer will be marked brainliest, select which ones are false and true for all.
riadik2000 [5.3K]

Answer: 1. Y

2.Y

3.N

Step-by-step explanation:

7 0
3 years ago
One shelf at Cover-to-Cover Bookstore contains copies of several books on the best-seller list. Half of the books on the shelf a
ra1l [238]

Answer:

The number of best sellers on the shelf are 13.333 best sellers

Step-by-step explanation:

The question is a word problem with the following specifications;

Proportion of the books, B, on the shelf that are number 1 best seller = 1/2 of B

Proportion of the books that are Number 3 book = 1/4 of (1 - 1/2) of B

Proportion of the books that are Number 2 book = 1/2 - 1/4 of (1 - 1/2) of B

Given that there are 5 copies of Number 2 book we have;

1/2 - 1/4 × (1 - 1/2) × B = 3/8 × B = 5

Which gives the number of best sellers on the shelf as B = 40/3 books

If there is a grammatical misunderstanding, we should have;

There appear to be an error in grammar as the statement maybe should have read as follows

Half of the books on he shelf are copes of the Number 1 best seller. The remainder are 1/4 copies of the Number 3 book.....

Which gives;

Proportion of the books that are Number 3 book = 1/4 of B

Proportion of the books that are Number 2 book = (1 - 1/2 - 1/4) of B

Given that there are 5 copies of Number 2 book we have;

(1 - 1/2 - 1/4) × B = 1/4 × B = 5

Which gives the number of best sellers on the shelf as B = 20 books.

5 0
3 years ago
How do you do a word phrase?
eimsori [14]
You simple write out the the equation in words 
for example 
-12+2
negative twelve plus two
5 0
3 years ago
You roll a six sided die. What is the probability of rolling a 1 or a number greater than 4.
Romashka [77]

A. 1/2

This is because there are 6 possible outcomes. 1, 2, 3, 4, 5, and 6.

The probability of rolling 1, 5, and 6 is 3 out of 6 (3/6)

3/6 reduced is 1/2.

3 0
3 years ago
You use 4 gallons of water on 30 plants in your garden. At that rate, how much water will it take to water 45 plants?
lisabon 2012 [21]
6 gallons since the gallons of water is divided by too since the initial value added 1/2 so the number of gallons is divided by too and added to the original amount of gallons so i believe your answer will be 6 gallons
4 0
3 years ago
Read 2 more answers
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