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My name is Ann [436]
3 years ago
10

Polly's parents car weighs about 3500 pounds. Samantha, Esther, and pollys each wrote the weight of the car in scientific notati

on. Polly wrote 35.0×10^2, Samantha wrote 0.35×10^4, Esther wrote 3.5×10^4. A. Which of these girls are correct? B. Explain the mistakes of those who got the question wrong.
Mathematics
2 answers:
irakobra [83]3 years ago
7 0
Esther is correct, the first number to a scientific notation has to be above 0 but under 10
Effectus [21]3 years ago
7 0
Esther is correct. The other two misplaced the decimal place.
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Tom has a part-time job. On Wednesday, Tom earned $20.50, and on Thursday he earned $36.21. On Friday, Tom earned twice as much
zvonat [6]
20.50+36.21=56.57
Twice can be said as x2 so
20.50 x2=41
Leaving 56.57 and 41
56.67+41=91.67
8 0
3 years ago
100 POINTS BRAINLIEST QUESTION ATTACHED.
Dimas [21]

ANSWER

- 7 \sqrt{6}

EXPLANATION

The given radical expression is

3 \sqrt{6}  - 10 \sqrt{2}  \times  \sqrt{3}

Recall and use

\sqrt{a}  \times  \sqrt{b}  =  \sqrt{ab}

to obtain;

3 \sqrt{6}  -10 \sqrt{2 \times 3}

Simplify the second radicand.

3 \sqrt{6}  - 10 \sqrt{6}

We have two like surds so we can simplify to obtain;

- 7 \sqrt{6}

3 0
3 years ago
Read 2 more answers
Rewrite each expression using each base only once.
mezya [45]
Rewrite each expression using each base only once. 

 (-6)^12 * (-6)^3 * (-6)^2 
 (-6)^(12+3+2)
 (-6)^(17)
 Answer: 
 (-6)^(17)


 2^2 * 2^7 * 2^0 
 (2)^(2+7+0)
 (2)^(9)
 Answer: 
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 Simplify each expresion.

 5c^4 * c^6 
 5*c^(4+6)
 5*c^(10)
 Answer:
 5*c^10
 (-2.4n^4)(2n^-1)
 (-2.4*2)(n^4)(n^-1)
 (-2.4*2)(n^(4+(-1))
 (-4.8)(n^(4-1))
 (-4.8)(n^(3))
 Answer: 
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 (4c^4)(ac^3)(-3a^5c)
 ((4)*(-3))*(c^(4+3+1))*(a^(1+5))
 (-12)*(c^(8))*(a^(6))
 Answer: 
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 a^6b^3 * a^2b^-2
 (a^(6+2))*(b^(3+(-2)))
 (a^(8))*(b^(3-2))
 (a^(8))*(b^(1))
 (a^8)*(b)
 Answer: 
 (a^8)*(b)

8 0
3 years ago
Guys please help me. Thank you
pishuonlain [190]
1/8 or 1 in 8. There are 8 sections and only one is yellow. Therefore, you have a 1/8 chance of spinning yellow. As a percent it would
be 12.5%
7 0
3 years ago
Solve for x and please roundddd
kati45 [8]
Should be 37 degrees

We know the lengths of the adjacent and opposite sides when looking at the angle x, so we use those two sides to find the trig ratio.

So we use Opposite/adjacent (Tangent) Which is 54/72=0.75

Now we get out the trig ratio table. Because we used the tangent ratio (O/A) , we use that column to look for the closest number to 0.75.
The closest is 0.754, and the degree for it is 37 degrees

Rlly hope this helps :)))

6 0
2 years ago
Read 2 more answers
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