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enyata [817]
3 years ago
15

A student found the slope of a line that passes through the points (3,15) and (5,9) to be -1/3. what mistake did he make

Mathematics
1 answer:
Vlad [161]3 years ago
4 0

He didn't do it as rise over run, or y2-y1/x2-x1

He did it reverse, which is incorrect.

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What is m∠PTQ???????????
anyanavicka [17]

Answer:

m∠PTQ = 40°

Step-by-step explanation:

From the picture attached,

Two lines PS and RQ are intersecting each other at a point T.

Vertical angles formed at the point of intersection T will be equal in measure.

m∠PTQ = m∠STR and m∠PTR = m∠QTS

Therefore, (x + 28)° = (2x + 16)°

28 - 16 = 2x - x

12 = x

m∠PTQ = (x + 28)°                            

             = 12 + 28

             = 40°

Therefore, measure of angle PTQ is 40°.

5 0
4 years ago
-2/3m = -12 please explain how to solve.
vichka [17]

Answer:

m = 18

Step-by-step explanation:

-2/3m = -12

multiply both sides of the equation by 3:

-2/3m(3) = -12(3)

simplify:

-2m = -36

divide both sides by -2:

-2m/-2 = -36/-2

simplify:

m = 18

3 0
3 years ago
Read 2 more answers
a road crew finished building a road.if the crew took 5 5/6 days how many kilometers of the road did they do each day
Leto [7]

Answer:

A construction crew has just finished building a road. The crew worked for 5 5/6 days. how many kilometers long, how many kilometers of road did they build each day? (Assume they built the same amount each day.) hope this helps  ; )

Step-by-step explanation:

4 0
3 years ago
Please help!! This is so confusing! 100 points!!
masya89 [10]

Answer:

The value of the expression given is:

  • 4

Step-by-step explanation:

First, you must divide the expression in three, and to the final, you can multiply it:

  1. [(3^8)*(2^(-5))*(9^0)]^(-2)
  2. [(2^(-2))/(3^3)]^4
  3. 3^28

Now, we can solve each part one by one:

<em>First part. </em>

  • 3^8 = 6561
  • 2^(-5) = 0.03125
  • 9^0 = 1 (Whatever number elevated to 0, its value is 1)
  • (6561 * 0,03125 * 1) = 205.03125

And we elevate this to -2:

  • 205.03125^-2 = 2<u>.378810688*10^(-5)</u> or <u>0.00002378810688 </u>

<em>Second part. </em>

  • 2^(-2) = 0.25
  • 3^3 = 27
  • 0.25 / 27 = 9.259259259 * 10^(-3) or 0.00925925925925

And we elevate this to 4:

  • 0.00925925925925^4 = <u>7.350298528 * 10^(-9)</u> or <u>0.000000007350298528 </u>

<em>Third Part. </em>

  • 3^28 = <u>2.287679245 * 10^13</u> or <u>22876792450000</u>

At last, we multiply all the results obtained:

  • 0.00002378810688 * 0.000000007350298528 * 22876792450000 = <u>3.999999999999999999</u> approximately <u>4</u>

<u><em>We approximate the value because the difference to 4 is minimal, which could be obtained if we use all the decimals in each result</em></u>.

3 0
3 years ago
Read 2 more answers
Which point on the number line is closest to the product of the numbers graphed at points R and T? Explain your answer.
victus00 [196]

Answer Point R = 7/10

and Point T = 9/10

7/10  · 9/10  = 63

63/100  

6 /10 = point Q.

Step-by-step explanation:

5 0
3 years ago
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