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3 years ago

Please help!!!! D:(word problem grade 7-8)

Mathematics

1 answer:

KIM [24]3 years ago

3 0

Answer:

Step-by-step explanation:

To solve this, first, take 22 minutes and divide it by 60 minutes, which is the number of minutes in an hour. Then, add two to the value, and multiply it by six square meters per hour, which is the rate that David can paint the wall. From there, you get 14.2 square meters which he painted in 2 hours and 22 minutes. Divide 14.2 square meters by the length of 11 meters to get 1.290 meters. Since they asked you to round to the nearest meter, you get 1 meter.

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Daniel guesses that he scored a 95 on his science test.His actual score is 91. What is the percent error in Daniel's guess? Roun

Kamila [148]

1) Formula for the percent of error:

                               [estimated measure - real measure]
Percent of error = ---------------------------------------------------- x 100
                                            real measure

2) Calculations:

                             [95 - 91]
Percent error = --------------- x 100 = 4.4 %
                                 91

Answer: 4.4%

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3 years ago

A box contains x apples. 5 are green and the rest are red. Write an expression for P(red).

zvonat [6]

Answer:

Step-by-step explanation:

a box contians× means 5×5=25

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2 years ago

Find the exact value of x

Galina-37 [17]

Answer:

8.94 (Rounded would be 9)

Step-by-step explanation:

By using the Pythagorean Theorem formula,

A^2+B^2 = C^2

You have the hypotenuse (c) = 12

and you have a leg (a) = 8

and you're trying to find another leg (b) = x

In order to find this, you'll have to change up the formula in order to find (B) instead of (C)

B^2 = C^2 - A^2

(B) = (12)^2 - (8)^2

(B) = 144 - 64

(B) = 80

Square root of 80

B = 8.9

5 0

2 years ago

Read 2 more answers

If i have 2 apple and get 3 more then lose 2 how many do i have left

nydimaria [60]

You have 2 apples, get 3 more, and then lose 2 of them.

So, you HAVE 2 apples, and if you get 3 more, you can add it to the 2.
$2 + 3 = 5$

In total at the moment, you have 5 apples. Now, you lose 2 more. We can subtract that from our total number of apples.
$5 - 2 = 3$

We now know that you are left with 3 apples.

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3 years ago

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FromTheMoon [43]

Answer:

a square plus 2ab plus b square......hope this will help you...thank you

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3 years ago

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Please help!!!! D:(word problem grade 7-8)​

Please help!!!! D:(word problem grade 7-8)