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3 years ago

HELP WILL DO ANYTHING TO GET ANSWERS

Mathematics

2 answers:

nignag [31]3 years ago

7 0

Answer:

24. 40 minutes approximately

25. 8 days

Step-by-step explanation:

24. 40 minutes

Anna: 1 hour

Peter: 3 hours

Maria: 6 hours

A way to solve this kind of question is to think about how much they can perform given the same amount of time.

Anna: 1 hour x 6: 6 hours (In 6 hours Anna can clean 6 houses)

Peter: 3 hours x 2 6 hours (In 6 hours Peter can clean 2 houses)

Maria: 6 hours x 1: 6 hours (In 6 hours Peter can clean 1 house)

Working together they can clean the house 9 times faster.

It is 0.66 hours, or approximately 40 minutes

25. 8 days

It climbs 3 feet up but then it falls 2 feet down while sleeping during

the night. So the snail actually climbs 1 foot every day. It happens in the first 7 days. On the 8th day it goes out before sleep.

garik1379 [7]3 years ago

3 0

Answer:

40 min 8 days

Step-by-step explanation:

...

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Which of the following is the solution of –6x – 17 = 19?

Ostrovityanka [42]

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Which shows the correct substitution of the values a, b, and c from the equation -2=-x+x^2-4 into the quadratic formula?

Greeley [361]

Given the equation:

(1) $-2=-x+ x^{2}-4$

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Then, we need to order the equation (1) and to adjust it to the equation (2), so:

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So, if we compare these two equations, the conclusion is:

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Substituiting a, b and c into (3):

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Finally, the results are two values:

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3 years ago

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lana66690 [7]

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