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2 years ago

An elevator is supported by a cable and is moving downward through the elevator shaft at constant speed.

Mathematics

1 answer:

Nana76 [90]2 years ago

3 0

Answer: D The upward tension force in the cable is equal to the downward force of gravity.

Step-by-step explanation:

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Which representation shows a nonproportional relationship between x and y? 6 4 2 1 FA 11 3 y = -X -9-8-7-6-5-4-3-2-1 334 5 6 7 8

aleksandr82 [10.1K]

proportional relationships have constant ratios.

the graph is a line, so it is a proportional relationship. (A)

the function is in the form y=kx (proportional function) (C)

Find the ratio of the tables: (B)

$m=\frac{-0.8-(-1.6)}{-2-(-4)}=0.4=\frac{0.4-(-0.8)}{1-(-2)}=\frac{1.2-0.4}{3-1}=$

$m=\frac{-0.2-(-1)}{-3-(-5)}=0.4=\frac{1.8-(-0.2)}{2-(-3)}=\frac{3-1.8}{5-2}$

All represent a proportional relationship

4 0

1 year ago

What is the 7-intercept of 2x-4y=12

Bingel [31]

Answer:

-3

Step-by-step explanation:

2x - 4y = 12

4y = 2x - 12

y = ½x - 3

Y intercept is -3

X intercept is 6

8 0

3 years ago

Read 2 more answers

Sam is moving bags of soil from a loading dock into a storeroom. The top soil weighs 40 pounds per bag and the mulch weighs 20 p

Levart [38]

Answer:

$40x+20y\leq 480$

Step-by-step explanation:

Givens

The top soil weighs 40 pounds per bag.
The mulch weighs 20 pounds per bag.
The cart can only carry up to 480 pounds.

Notice that the restriction is a maximum of 480 pounds, that means the inequality must include the sign $\leq$ .

Now, let's call $x$ the top soil and $y$ the mulch, the inequality that represents this problem, would be

$40x+20y\leq 480$

3 0

3 years ago

Read 2 more answers

0 A pigeon can fly at a speed of 84 kilometers per hour. How long does it take the pigeon to fly 7 kilometers

QveST [7]

The miles per hour is 84 kilometers per 60 minutes (7:5 ratio) so if we take seven kilometers times the ratio 5/7 we get 5 minutes

7 0

2 years ago

Debra travels a distance of 2 miles in 1 minute how much distance can she cover in 25 minutes

Marta_Voda [28]

Debra will travel 50 miles in 25 minutes

Step-by-step explanation:

Given

distance = 2 miles

Time = 1 minute

Other time = 25 minutes

We can use the proportions to find the number of miles debra will travel in 25 minutes

So,

$Distance:Time::Distance:Time\\2:1::Distance:25\\\frac{2}{1} = \frac{Distance}{25}\\Distance = 25 *2\\= 50\ miles$

Hence,

Debra will travel 50 miles in 25 minutes

Keywords: Proportion, rate

Learn more about proportion at:

#LearnwithBrainly

8 0

3 years ago