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artcher [175]
3 years ago
14

Solve:

Mathematics
1 answer:
pav-90 [236]3 years ago
6 0
The first ones b.........
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Toni rows a boat 4.5 km/h upstream and then turns around and rows 5.5 km/h back downstream to her starting point. If her total r
ahrayia [7]

Answer:

b

Step-by-step explanation:

5 0
3 years ago
According to the synthetic division below, which of the following statements are true?
makkiz [27]

Answer:

Correct options are A and D

Step-by-step explanation:

According to the synthetic division in the diagram you can write down the result of division:

2x^2+9x-7=(x-(-6))(2x-3)+11,\\ \\2x^2+9x-7=(x+6)(2x-3)+11.

Therefore,

  • when 2x^2+9x-7 is divided by x+6, the remainder is 11 (option D is correct). To find the remainder after division by x-6, you have to use another synthetic division. Actually, 2x^+9x-7=(x-6)(2x+21)+119, then the remainder is 119 (option C is false).
  • when x=-6, the expression x+6 is -6+6=0 and 2x^2+9x-7=0\cdot (2x-3)+11=11 (option A is correct). You cannot state the same when x=6 (option B is false).
  • neither x-6 nor x+6 is a factor of 2x^2+9x-7, because the remainders in both cases are not equal to 0 (options E and F are false).

4 0
4 years ago
Read 2 more answers
Evan used base-10 blocks to model the product of 3 and 0.51.
Lilit [14]

Base 10 blocks are used to perform arithmetic operations.

To model the product of 3 and 0.51, Evan needs <em>3 copies of 5 tenths and 1 hundredths.</em>

The expression can be represented as:

\mathbf{3 \times 0.51}

Express 0.51 as 0.5 + 0.01

\mathbf{3 \times 0.51 = 3 \times (0.5 + 0.01)}

  • 0.5 means 5 tenths
  • 0.01 means 1 hundredths
  • 3 means that, the above blocks are needed in three places.

Hence, Evan needs <em>3 copies of 5 tenths and 1 hundredths.</em>

<em />

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Read more about base 10 blocks at:

brainly.com/question/7621712

8 0
3 years ago
Read 2 more answers
Devaughn's age is two times Sydney's age. The sum of their ages is 18. What is Sydney's age?
emmainna [20.7K]

Answer:

Sydney's Age is 6

Step-by-step explanation:

6 x 2 = 12

12 + 6 = 18

8 0
3 years ago
Read 2 more answers
When 2x^2-3x+2 is subtracted from 4x^2-5x+2, the result is _____________?
Dennis_Churaev [7]
I think le answer is -2x • (x - 1)
3 0
3 years ago
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