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mafiozo [28]
3 years ago
6

Math help! plsss on these questions

Mathematics
1 answer:
likoan [24]3 years ago
5 0
1.)-2v-7=-23
    -2v=-16
      v=8
2.)x/3-10=-12
    x/3-10=-12
    x/3=-2
      x=-6
3.) x/4+10=14
     x/4=4
       x=16
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Given: PQ ⊥ QR , PR=20, SR=11, QS=5 Find: The value of PS.
Neporo4naja [7]

1. PQR and is a right triangle, so you can calculate the measure of PQ by applying the Pythagorean Theorem. PR is the hypotenuse and QR and PQ are the legs:

PR^{2}=PQ^{2}+QR^{2}\\ PQ=\sqrt{PR^{2}-QR^{2}}\\ PQ=\sqrt{20^{2}-16^{2}} \\ PQ=12

2. PQS and is a right triangle too, so you can calculate the measure of PS by applying the Pythagorean Theorem as above. PS is the hypotenuse and PQ and QS are the legs:

PS=\sqrt{PQ^{2}+QS^{2}}=13

Therefore, the answer is: The value of PS is 13.

6 0
3 years ago
Read 2 more answers
20 people are going by van to a movie.Each van seats 8 people . How many vans are needed to take everyone ?
BARSIC [14]

Answer:

3

Step-by-step explanation:

20/8=2.5


7 0
3 years ago
Which of the points A (5, −3),B (−2, 4), C (0, 0),D (2, 1), E (−5, 2.5) belong to the graph of the direct variation y = 1/2 x ?
Gala2k [10]

Answer:

A (5,-3) does not belong

B (-2,4) does not belong

C (0,0) belongs

D (2,1) belongs

E (-5,2.5) does not belong

Step-by-step explanation:

To find the answer, you'll need to know

what is the number in half? If (x,y) is like

10,5 then that will belong.

3 0
3 years ago
The median salary for the Dallas Cowboys was $441,300 in 2000 and $1,326,720 in 2008. Write a linear equation giving the median
maksim [4K]

 

The linear equation that is asked from the problem takes the form of:

y = m x + b

where,

y = the median salary

x = the number of years

m = the slope of equation

b = y-intercept

 

The slope of the equation (m) can be calculated using the formula:

m = (y2 – y1) / (x2 – x1)

m = (1326720 – 441300) / (2008 – 2000)

m = 110,677.5

 

The y-intercept is then obtained by using any of the data pair:

441300 = 110677.5 (2000) + b

b = -220913700

 

Therefore the complete equation is:

y = 110677.5 x – 220913700

 

The median salary in 2016 is therefore:

y = 110677.5 (2016) – 220913700

y = $2,212,140



Answer: 

$2,212,140

4 0
4 years ago
In an 80/20 mortgage, what is the first mortgage used for?
ludmilkaskok [199]

Answer:

i think its letter B. 20% down payment

5 0
2 years ago
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