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3 years ago

I need some help please my answer is the one below but I'm not sure pls give work

Mathematics

1 answer:

Genrish500 [490]3 years ago

6 0

C is the right answer

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The movement of the progress bar may be uneven because questions can be worth more or less (including zera

kakasveta [241]

Answer:

600

Step-by-step explanation:

Because the tens digit is less than 5, round down to 600

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2 years ago

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What is 8.88x10 to the 4th power.

LUCKY_DIMON [66]

the answer is 88,880

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3 years ago

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The area of a trapezium shaped field is 480m the distance between two parlel sides is 15m and one of the parrellel side is 20m f

Annette [7]

The other parallel side is 44 m

Step-by-step explanation:

Let us revise the formula of the area of a trapezium

$A=\frac{1}{2}(b_{1}+b_{2})h$ , where

$b_{1}$ and $b_{2}$ are its parallel bases
h is its height (The distance between the two parallel bases)

∵ The area of a trapezium is shaped field is 480 m²

∴ A = 480 m²

∵ The distance between two parallel sides is 15 m

∴ h = 15 m

∵ One of the parallel side is 20 m

∴ $b_{1}$ = 20 m

We need to find $b_{2}$

Substitute all these value in the rule of the area below

∵ $A=\frac{1}{2}(b_{1}+b_{2})h$

∴ $480=\frac{1}{2}(20+b_{2})(15)$

- Multiply the two sides by 2

∴ $960=(20+b_{2})(15)$

- Divide both sides by 15

∴ $64=20+b_{2}$

- Subtract 20 from both sides

∴ $44=b_{2}$

The other parallel side is 44 m

Learn more:

You can learn more about trapezium in brainly.com/question/7287774

#LearnwithBrainly

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4 years ago

Alma wants to prove to her parents that listening to music while she studies for her tests will help her get better grades. She

Nikolay [14]

She asked her friends, which does not represent a random sample.

She tried to show cause and effect without doing an experiment (which includes simple random sample, control group, treatment, etc).

So the answer is she did not use a random sample, and tried to show cause and effect with an observational study.

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3 years ago

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Jeffrey needs to multiply 689 by 39, 899. Which of the following would

zhuklara [117]

Answer:

Answers are below

Step-by-step explanation:

I would estimate the numbers as 700 and 40,000

The estimated answer is 700 x 40,000 = 28,000,000

The actual answer is 689 x 39,899 = 27,490,411

The estimated and actual answer are pretty close so this works.

If this answer is correct, please make me Brainliest!

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4 years ago