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likoan [24]
3 years ago
11

GIVING BRAINLIEST

Mathematics
1 answer:
CaHeK987 [17]3 years ago
5 0
It’s B - 4 your welcome ☺️☺️
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Zolol [24]
In total it has to be 180 since a straight line is 180 so i would be 69
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PLEASE HELP FOR 15 POINTS!!!
Rashid [163]
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3 years ago
The amount a spring will stretch varies directly with the amount of weight attached to the spring. If a spring stretches 2.1 inc
aleksklad [387]

Answer:

1.05\ in

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y/x=k or y=kx

Let

x -----> the amount of weight

y ----- the amount a spring will stretch

we know that

For x=80 lb, y=2.1 in

<em>Find the value of k (constant of proportionality)</em>

k=y/x

substitute the values

k=2.1/80

The linear equation is

y=(2.1/80)x

How far will it stretch when 40 pounds is attached?

For x=40 lb

substitute the value of x in the linear equation and solve for y

y=(2.1/80)(40)=1.05\ in

3 0
3 years ago
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PLZ HELP! MY teacher is no help and I have no idea how this works.
Rainbow [258]

Answer: find x

Tan(30)=20/x

X= 20/ tan(30)

Tan(30) =0.577

X= 20/ 0.577

X=34.66

Find Y

Sin(30)=20/y

Y=20/sin(30)

Sin(30)=0.5

Y=40

Step-by-step explanation:

3 0
4 years ago
I need help pls ! pls help me
Sholpan [36]

Answer:

x= 175°

Step-by-step explanation:

angles in a triangle add up to 180 degrees

85 + 90 = 175

180 - 175 = 5 (the missing angle not x)

angles on a straight line add up to 180 degrees

180 -  5 =175

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3 years ago
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