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Elenna [48]
4 years ago
12

The points (2,r) and (5,-1) lie on a line with slope 4. what is r

Mathematics
1 answer:
Andrews [41]4 years ago
7 0

Answer:

R=-13

Step-by-step explanation:

S=-1-r/5-2

4=-1-r/3

Cross multiply

4*3=-1-r

12=-1-r

Collect like terms

12+1=-r

-r=13

Divide both sides by -

r=-13

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A store is having a sale on chocolate chips and walnuts. For 3 pounds of chocolate chips and 5 pounds of walnuts, the total cost
mrs_skeptik [129]

Answer:

Step-by-step explanation:

3c + 5w = 16

6c + 2w = 22

-6c - 10w = -32

6c  + 2w = 22

-8w = -10

w = 10/8 = 5/4 = $1.25 per lb

3c + 5(1.25) = 16

3c + 6.25 = 16

3c = 9.75

c = $3.25 per lb

5 0
3 years ago
PYTHAGOREAN THEOREM IN 3D URGENT PLEASE PHOTO INSERTED
Andrews [41]

To find the length of the diagonal, we need to calculate the length of the base first and then use the value to calculate the diagonal since we are given the value of height of the triangle.

<h3>Pythagorean Theorem</h3>

This theorem is used to find the missing side of a right angle triangle given that we have the length of two sides.

To calculate the base of the triangle, let's use Pythagorean theorem here

x^2 = y^2 + z^2\\x^2 = 2^2 + 3^2\\x^2 = 4 + 9 \\x^2 = 13\\x = \sqrt{13} \\x = 3.61

Having the length of the base, let's consider the height of the triangle which is 6 and substitute the values.

d^2 = 6^2 + 3.61^2\\d^2 = 36 + 13.0321\\d^2 = 49.0321\\d = \sqrt{49.0321} \\d = 7.00

From the calculations above, the values of the triangle are

  • diagonal = 7
  • base = 3.61
  • height = 6

Learn more on pythagorean theorem here;

brainly.com/question/231802

#SPJ1

7 0
2 years ago
Bettina spent $75 on 5 shirts that each cost the same price. Three of the shirts.were red. Wich expression represents the total
maw [93]
The answer is 75/5 * 1/3 because 75/5 is the price of 1 shirt, and 1/3 but I don't know how it's 1/3. I got 75/5 * 3 but the closest answer was C.

Hope this helped☺☺
7 0
3 years ago
Solve the equation 2/3x=-1/2x+5 what is the first step to isolate the variable term on one side of the equation
Komok [63]

Answer:

x= 30/7

Step-by-step explanation:

See image below:)

4 0
3 years ago
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MrRa [10]
Two plus nine-teen is twenty one then you subtract seven from that and get fourteen. Your answer is 14 foot
7 0
3 years ago
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