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Lyrx [107]
3 years ago
10

In scientific notation. Choose the answer with the proper number of significant figures. (3x10^4)(4x10^23)

Mathematics
1 answer:
xeze [42]3 years ago
6 0
It would be choice B.

This is because the 3 is distributed to the 4 to get 12. The 10^4 is distributed to the 10^23 and because of the exponent laws, the exponents are added to get 27 and the 10's (being the base) is left alone.
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Emily buys a toaster during the sale off for 10% off if ellen pays 36$ what was the original price
LenaWriter [7]

Answer:

100%-10%=90%

90%=36$ what about 10%=4$

36$+4$=40$

5 0
2 years ago
In June 2005, a CBS News/NY Times poll asked a random sample of 1,111 U.S. adults the following question: "What do you think is
Shtirlitz [24]

Answer:

The appropriate null hypothesis is H_0: p = 0.25

The appropriate alternative hypothesis is H_1: p < 0.25

Step-by-step explanation:

Exactly a year prior to this poll, in June of 2004, it was estimated that roughly 1 out of every 4 U.S. adults believed (at that time) that the war in Iraq was the most important problem facing the country.

At the null hypothesis, we test if the proportion is still the same, that is, of \frac{1}{4} = 0.25. So

H_0: p = 0.25

We would like to test whether the 2005 poll provides significant evidence that the proportion of U.S. adults who believe that the war in Iraq is the most important problem facing the U.S. has decreased since the prior poll.

Decreased, so at the alternative hypothesis, it is tested if the proportion is less than 0.25, that is:

H_1: p < 0.25

3 0
3 years ago
3x² + 2x + 2 + 4x² + 5 Simplify​
Natalka [10]

Answer: 7x^2 + 2x + 7

Step-by-step explanation:

Combine likes terms that have alike variables and alike exponents.

(3x^2 + 4x^2) + (2x) + (2 + 5)

7x^2 + 2x + 7

6 0
3 years ago
Give the slope between the points<br> (2,5) (14,-4)
andrezito [222]

Answer:

-\frac{3}{4}

Step-by-step explanation:

Slope

(2, 5) and (14, -4)

_______________

When we solve for slope within two points, we have to follow the formula of slope.

\frac{y^2-y^1}{x^2-x^1}

X and Y - The first and second number in both points

1 and 2 - The first or second number within one point

Substitute :

\frac{-4-5}{14-2}

\frac{-9}{12}

Simplify :

-\frac{3}{4}

8 0
3 years ago
Read 2 more answers
A swimming pool is to be drained. The pool is shaped like a Rectangular prism with length 12m , with 10 m, and depth 3m. Suppose
tiny-mole [99]

Answer:

20 hours

Step-by-step explanation:

first calculate volume:

12x10x3=360

then divide by 18

360/18=20

So 20 hours in total

6 0
3 years ago
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