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kvv77 [185]
3 years ago
14

The sum of 2 time a number and -7, added to 5 times the number

Mathematics
1 answer:
DIA [1.3K]3 years ago
4 0

Answer:

7x - 7

Step-by-step explanation:

Variable: X = the unknown number

2x + (-7) + 5x

= 7x - 7

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The distance from House B to House D is 50 feet. The distance from House A to House C is 40 feet. What is the area of the
Naya [18.7K]

Answer:

200

Step-by-step explanation:

40*50=200

7 0
3 years ago
14. Find the distance between (7,217pi/180 ) and (5,-23pi/36 ) on the polar plane.
irina [24]

Answer: the distance is  3.49 units

Step-by-step explanation:

There are some ways to find the exact distance, i will calculate the distance in rectangular coordinates.

When we have a point (R, θ) in polar coordinates, we can transform it into rectangular coordinates as:

x = R*cos(θ)

y = R*sin(θ)

Then we have:

(7,217pi/180 )

R = 7

θ = (217/180)*pi

x = 7*cos( (217/180)*pi) = -5.59

y = 7*sin( (217/180)*pi) = -4.21

So this point is (-5.59, -4.21) in rectangular coordinates.

And the other point is  (5,-23pi/36 )

R = 5

θ = -(23/36)*pi

x = 5*cos(  -(23/36)*pi ) = -2.11

y = 5*sin(  -(23/36)*pi ) = -4.53

So this point is (-2.11, - 4.53)

Then the point distance between those points is:

D = I (-2.11, -4.53) - (-5.59, -4.21) I

D = I (-2.11 + 5.59, -4.53 + 4.21) I

D = I (3.48, -0.32) I = √( (3.48)^2 + (-0.32)^2) =  3.49

4 0
3 years ago
What is the answer 4.6n+7.1n+12.8n-1.6n= ?
Alex787 [66]
The answer would be=22.9n
4 0
3 years ago
5x when x=7 ......... NEED HELP
Gnoma [55]

Answer:

35

Step-by-step explanation:

5 x 7 = 35

5 0
3 years ago
Read 2 more answers
Whats the height of the rectangular prism
garri49 [273]

Answer:

length l = 32.25 m

width w = 8223.75 m

height h = 12.5 m

diagonal d = 8223.82273 m

total surface area Stot = 736831.875 m2

lateral surface area Slat = 206400 m2

top surface area Stop = 265215.938 m2

bottom surface area Sbot = 265215.938 m2

volume V = 3315199.22 m3

Step-by-step explanation:

5 0
2 years ago
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