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2 years ago

Please Help Me worth 20 points

Mathematics

1 answer:

rodikova [14]2 years ago

8 0

Answer:

1.Amy should ask every 10th person leaving the school at the end of the day and Amy should ask the 50 students in her computer lab.

2.Yes,the sample is unbiased and equal to everyone.

3.200

Step-by-step explanation:

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How do you square a variable

77julia77 [94]

To square means to multiply something by itself. A variable is a letter such as x. So a squared variable=x×x=x^2.
I hope that helped.

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2 years ago

What is M.M.C and how to find it?

Bingel [31]

Maximum Material Condition or for short, MMC, is a feature of size symbol that describes the condition of a feature or part where the maximum amount of material (volume/size) exists within its dimensional tolerance.

4 0

2 years ago

if your car gets 28 miles per gallon, how much does it cost to drive 310 miles when gasoline cost $3.50 per gallon?

Butoxors [25]

Hi,

Work:

$28miles = 1gallon$

To find the cost of gallons spend for 310 miles you need to first find the amount of gallons consumed on 310 miles path.

$310 \div 28 = 11.07gallons$

If each costs 3.5$ you need to multiply gallons with money.

$3.5 \times 11.07 = 38.745$

You would spend 38.745$ to drive 310 miles.

Hope this helps.
r3t40

3 0

3 years ago

4x^2-21x-18=0 Find the discriminate

SpyIntel [72]

a = 4, b = -21, c = -18

to keep from getting "mixed up", evaluate the discriminant first ...

b2 - 4ac = (-21)2 - 4(4)(-18) = 729

sqrt(729) = 27

x = (21 +/- 27)/8

x = -3/4, x = 6

since the discriminant is a perfect square, the original quadratic will factor ...

4x2 - 21x - 18 = 0

(4x + 3)(x - 6) = 0

x = -3/4, x = 6

6 0

2 years ago

Read 2 more answers

Damian spends a winter day recording the temperature once every three hours for science class. At 9 am, the temperature was -6°F

Jlenok [28]

Answer:

-4.2

Step-by-step explanation:

6.9 - 11.1

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2 years ago