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Sergeeva-Olga [200]
3 years ago
15

What is the value of the expression if a = 0.5 and b = -3 18a + 7b

Mathematics
1 answer:
PolarNik [594]3 years ago
3 0

Answer:

-12

Step-by-step explanation:

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3/2x-5=7<br><br> Yo can someone explain this?
Contact [7]

Answer:

x = 8

Step-by-step explanation:

  1. Write it out: \frac{3}{2}x - 5 = 7  
  2. Add 5 to each side, so it now looks like this: 3/2x = 12
  3. Divide each side by 3/2 to cancel out the 3/2 next to x. It should now look like this: x = 8

I hope this helps!

4 0
3 years ago
What is the value of x?<br> Enter your answer in the box.
Lynna [10]
That my friend is number 6
3 0
3 years ago
I'm stuck on a.<br>please help me!!!!​
agasfer [191]

You have to estimate the slope of the tangent line to the graph at <em>t</em> = 10 s. To do that, you can use points on the graph very close to <em>t</em> = 10 s, essentially applying the mean value theorem.

The MVT says that for some time <em>t</em> between two fixed instances <em>a</em> and <em>b</em>, one can guarantee that the slope of the secant line through (<em>a</em>, <em>v(a)</em> ) and (<em>b</em>, <em>v(b)</em> ) is equal to the slope of the tangent line through <em>t</em>. In this case, this would be saying that the <em>instantaneous</em> acceleration at <em>t</em> = 10 s is approximately equal to the <em>average</em> acceleration over some interval surrounding <em>t</em> = 10 s. The smaller the interval, the better the approximation.

For instance, the plot suggests that the velocity at <em>t</em> = 9 s is nearly 45 m/s, while the velocity at <em>t</em> = 11 s is nearly 47 m/s. Then the average acceleration over this interval is

(47 m/s - 45 m/s) / (11 s - 9 s) = (2 m/s) / (2 s) = 1 m/s²

7 0
3 years ago
Help me please!!!!!!
Llana [10]

Answer:

1. Equatoin = y = 2/9x + 1   Slope = 2/9   Y- interpects= 1

 2.Equatoin =  y= 7/5x - 7  Slope = 7/5   Y- interpects= 7

Step-by-step explanation:

6 0
3 years ago
Please need help on this one
Nookie1986 [14]
The answer is 130°
Because it is a circle, the angles have to all add up to 360°. So if you add up the two known angles, and subtract that sum from 360, you will get 130°
6 0
3 years ago
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