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2 years ago

8

How many times longer is the diameter of a grain of sand than the diameter of the average cell in the human body? Show your work

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1 answer:

kolezko [41]2 years ago

7 0

100 times longer because the sand grand is a very tiny particle

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4(-2d-3)=12, someone please solve this for me asap

wlad13 [49]

4(-3 + -2d) = 12

(-3 * 4 + -2d * 4) = 12

(-12 + -8d) = 12

-12 + -8d = 12

-12 + 12 + -8d = 12 + 12

-12 + 12 = 0

0 + -8d = 12 + 12

-8d = 12 + 12

12 + 12 = 24

-8d = 24

d = -3

5 0

2 years ago

triangle has sides measuring 2 inches and 7 inches If x represents the length in inches of the third side which inequality gives

il63 [147K]

We know that
The sum of the lengths of any two sides of a triangle is greater than the length of the third side (<span>Triangle Inequality Theorem)
so
inequality 1
</span> $(2+7) \ \textgreater \ x \\ 9 \ \textgreater \ x \\ x \ \textless \ 9 in$
<span>
inequality 2
</span> $(x+2) \ \textgreater \ 7 \\ x \ \textgreater \ 7-2 \\ x \ \textgreater \ 5 in$
<span>
the answer is
</span> $5 in \ \textless \ x \ \textless \ 9 in$ <span>
</span>

6 0

2 years ago

Could someone help me? The problems (see image attached) are about whether or not a decimal can be written as a question and why

Murrr4er [49]

Answer:

yes it can be bc it is repeating

5 0

1 year ago

4x what = 2800?! need help asap!

inn [45]

4 times 700 would equal 2800. that is the answer to your question.

7 0

3 years ago

Read 2 more answers

A track and field playing area is in the shape of a rectangle with semicircles at each end . The perimeter of the track is to be

MAVERICK [17]

We can let the radius of the semi circles be r and x can be the length of the rectangle.
The perimeter will be Perimeter = 2x + 2pr = 1200
The area of the rectangle is Area = x(2r)
Once we solve the perimeter equation, you get x = 600.
Put this into the area equation and you get Area = (600 - pr)(2r)
The maximum then gives r = 95. 493 and area 57, 295.8
Dimensions

Height is twice the radius or 190.986. Find base use equation x = 600 - p(95.493) = 300.

This means dimensions are 300 by 190.986

5 0

2 years ago