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Nady [450]
3 years ago
8

Find the sum of 12a + 7b, −6a − 9, and 14a − 12b.

Mathematics
2 answers:
VARVARA [1.3K]3 years ago
4 0

Answer:

20a + -5b + -9

Step-by-step explanation:

Taya2010 [7]3 years ago
3 0

Answer:

Step-by-step explanation:

20a-5b-9

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A train travels 4.4 miles in
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Answer:

63.8 miles

Step-by-step explanation:

If the train travels 4.4 miles in 4 minutes, then you have to divide 4.4/4 to find the miles the train travels per minute.

4.4/4 = 1.1

So, since the train travels 1.1 miles per minute, and we want to know how fast it travels in 58 minutes, we have to multiply 1.1 by 58. Since 1.1 is a decimal number, we have to multiply both sides by 10 to get 11x580.

11x580 = 5800+ 580 = 6380

Since we multiplied both numbers by 10, we have to divide 6380 by 100.

6380/100 = 63.8

So, the train travels 63.8 miles in 58 minutes.

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2 years ago
Which of the following shows the graph of y = 2 l n x On a coordinate plane, a curve starts at (0, negative 2) in quadrant 4 and
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Answer:

The answer to this question can be defined as follows:

Step-by-step explanation:

Given:

f(x)= 2^{-x}=\frac{1}{2^x}

  • In the above choices it is clearly defined from the above equation that output rises in the first quadrant, the value of f(x) tends to be zero and increases into another second quadrant.
  • For x = 0, y, once again, has become 1, that is the function passes the y platform at (0,1).
  • Therefore an exponential function reaches y = 0 in quadrant 1 on a coordinate plane and rises into quadrant 2.
  • (0,1) stage is the temperature at which the y-axis intersects.
8 0
3 years ago
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Arc CD is <img src="https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7B3%7D" id="TexFormula1" title="\frac{2}{3}" alt="\frac{2}{3}" align=
Katarina [22]

Answer:

b

Step-by-step explanation:

4 0
2 years ago
What is the answer to 7(6x-4)+2x
amm1812
<span>7(6x-4)+2x
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