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denis23 [38]
3 years ago
11

Hi, I need help with a practice SAT question on math. The problem is in the picture.

Mathematics
1 answer:
bagirrra123 [75]3 years ago
3 0

Answer:

  2.5

Step-by-step explanation:

The equation will have infinite solutions when it is a tautology--when both sides say exactly the same thing.

Eliminate parentheses, match coefficients, and solve for b.

  ax +ab = 4x +10

  a = 4 . . . . . . coefficient of x

  ab = 10 . . . . constant

Since we know a, we can find b:

  4b = 10

  b = 10/4 . . . . . . . divide by 4

  b = 5/2 = 2.5 . . .express in your favorite form

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According to the table, what was the hiker’s total displacement?
shtirl [24]

Answer:

A: 0

Step-by-step explanation:

Important to remember - total displacement is the direct distance between the start and finish points, and isn't always equal to the total distance travelled.

In the case of the table above, the hiker travels the same distance in opposite directions, which actually means they cancel each other out! Traveling 4 km to the west, then 4 km to east means you end up in the same spot, right? So your total displacement is 0! (or 4 - 4, which equals 0). Same happens with the north-south hikes - the hiker ends up in the same spot, as the displacement is equal to 6 - 6 = 0.

So, the total displacement of the hiker is 0. (Even though the hiker travelled 20 km!)

7 0
2 years ago
7% of 200 is what number?​
andrew-mc [135]

Answer:

7% of 200 is 14

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Thus, 7% of 200 is 14

<u>-TheUnknownScientist</u>

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2 years ago
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Ymorist [56]

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omeli [17]

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Answer:

Step-by-step explanation:

The domain of this quadratic is "all real numbers."  The function is defined for all x.  

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