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MissTica
3 years ago
12

(3x - 7) + (-2x -8) *

Mathematics
1 answer:
Orlov [11]3 years ago
5 0

Answer:

here look at the picture

Step-by-step explanation:

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Triangle DAN has coordinates D(-10,4), A(-4,1), and N(-2,5) Using coordinate geometry, prove that triangle DAN is a right triang
inn [45]

Answer:

75

Step-by-step explanation:

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8 0
3 years ago
A plane traveled 1248 miles to Ft. Worth and back. The trip there was with the wind. It took 12
Artemon [7]

speed of the  plane in still air is 76 m/s and speed of the wind is 28 m/s .

<u>Step-by-step explanation:</u>

Here we have , A plane traveled 1248 miles to Ft. Worth and back. The trip there was with the wind. It took 12  hours. The trip back was into the wind. The trip back took 24 hours. We need to find What is the speed of the  plane in still air? What is the speed of the wind? Let's find out :

<u>For Going trip :</u>

Let speed of plane be u , and wind be v so : Speed = ( Distance ) / ( time )

⇒ u+v = \frac{1248}{12}

⇒ u+v = 104   ...........(1)

<u>For Returning Trip :</u>

⇒ u-v = \frac{1248}{24}

⇒ u-v = 52   ...........(2)

Adding both equations we get :

⇒ (u+v)+(u-v)=104+52

⇒ 2u=156

⇒ u= 76m/s

Putting this value in equation (1) we get :

⇒ 76+v = 104

⇒ v=28m/s

Therefore , speed of the  plane in still air is 76 m/s and speed of the wind is 28 m/s .

6 0
3 years ago
A total of 320 tickets were sold for the school play. They were either adult tickets or student tickets. The number of student t
larisa [96]

Answer:

80

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
70 = -2.5x does anybody know the answer to this?
AleksAgata [21]
X= -28

-2.5(-28) = 70

If you got this right, please make me Brainliest
6 0
4 years ago
Could anybody explain to me what both the question is asking in a simple way. For a dummy.
almond37 [142]
Question A is asking: Considering the distribution shape (i.e skewed left, right, or symmetrical), what measure of center would be used? Explain why that measure of center would be used.

Question B is asking: What measure of variability (or change, i.e range, interquartile range, or standard deviation) would be used for this graph? Explain why this measure would be used.
5 0
2 years ago
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