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3 years ago

SOMEONE, PLEASE HELP ME!!!

Mathematics

2 answers:

ozzi3 years ago

8 0

C I would say the answer C because 400 people is a little too much people to interview and if the people are by the tennis courts those answers would be bias because they would say yes

Furkat [3]3 years ago

3 0

Answer:

C. The manager visits a park and interviews people who were waiting to use the tennis courts.

Step-by-step explanation:

It's biased because the manager is clearly asking people only interested in tennis, not a clearly random sample.

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100x+300y=1.200 (2/3x+10)/100=(y+20)/300

AlexFokin [52]

Answer:

x= -4.284 and y= 1.432

Step-by-step explanation:

5 0

3 years ago

The volume of a rectangular box is (x3 - 7x2 - 9x + 63) cubic units. Determine the dimensions of the rectangular box by factorin

Shalnov [3]

Hello,
well done.
As x^3-7x²-9x+63=(x-3)(x+3)(x-7) we must have x>3 and x>-3 and x>7 thus x>7

Explanations:
x^3-7x²-9x+63=x^3-9x+(-7x²+63)=x(x²-9)-7(x²-9)=(x²-9)(x-7)=(x+3)(x-3)(x-7)

6 0

3 years ago

A scientist measured 18 grams of

olya-2409 [2.1K]

Hence, option A 0.64 is the correct answer.

Further explanation:

Ounce is a larger unit than grams. When we have to go from a smaller unit to a larger unit we use division.

So,

Given

28.3 grams = 1 ounce

Then

$18\ grams=\frac{18}{28.3}=0.636=>0.64$

Hence, option A 0.64 is the correct answer.

Keywords: Conversions, Units of measurement

Learn more about conversions at:

#LearnwithBrainly

8 0

3 years ago

How do you figure out the reciprocal of a numer? E.g 5, 2/7 and 1&2/5 ??

eimsori [14]

You need to multiply 1 and 5 plus 2.
and for 5 2/7 it would be 5 times 7 plus 2.

So...
5 2/7= 37/7

1 2/5= 7/5

6 0

4 years ago

Solve the proportion for x.

Delvig [45]

$\frac{x}{8} = \frac{8}{64} \\ 64x = 8 \times 8 \\ 64x = 64 \\ x = \frac{64}{64} \\ \boxed{x = 1}$

Proportion for x is 1.
Use cross multiplication.

5 0

2 years ago