1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
BlackZzzverrR [31]
3 years ago
5

The weight needed to balance a lever varies inversely with the distance

Mathematics
1 answer:
Andrews [41]3 years ago
5 0

Let w represents the weight and d represents the distance.

It is given that

The weight needed to balance a lever varies inversely with the distance from the fulcrum to the weight. A 120-lb weight is placed on a lever, 5 ft from the fulcrum.

w = \frac{k}{d}

Substituting the values of w and d, we will get

120= \frac{k}{5}
\\
k =600lb \ ft

Using the value of k which is 600, with the above equation and the given value of d which is 8, we will get

w = \frac{600}{8} = 75lb

Therefore the correct option is B .

You might be interested in
How to find the indicated probability to this problem? This is a homework practice. Show your work. Thanks!
AlladinOne [14]

You want to find P(\text{no exercise}\mid\text{woman}); that is, given that you randomly choose from the pool of women, the probability that she does not exercise.

By definition of conditional probability,

P(\text{no exercise}\mid\text{woman})=\dfrac{P(\text{no exercise AND woman})}{P(\text{woman})}

496 of the total 1026 people are woman, and 341 of the 1026 people are women and do not exercise, so

P(\text{no exercise}\mid\text{woman})=\dfrac{\frac{341}{1026}}{\frac{496}{1026}}=\dfrac{341}{496}=0.6875\approx0.688

A simpler way of doing this is to look at what's called the marginal distribution of women in the table. Basically this comes down to ignoring all but the data pertaining to the women. There's a total of 496 women, and 341 of them do not exercise. So the probability that a given woman does not exercise is 341/496.

7 0
3 years ago
Help! Marking as brainlyest
tatiyna

Answer:

Step-by-step explanation:

I used x instead of ()

The initial function is:

● x = 1

The function after the changes is

● (1/2)x + 7

The function was shifted 15 unit to the left

7 0
3 years ago
(x+2)(4+y)(5+6)(2+x)(4+0.5x)
Yuki888 [10]

(x+2)(4+y)(5+6)(2+x)(4+0.5x)

combine like terms

(x+2) (4+y) (11) (x+2) (4+.5x)

11(x+2)^2 (4+y)(4+.5x)

distribute

11(x^2 +4x+2) (16+4y+2x+.5xy)

(11x^2+44x+22)(16+4y+2x+.5xy)

5.5 x^3 y + 22 x^3 + 66 x^2 y + 264 x^2 + 198 x y + 792 x + 176 y + 704

3 0
3 years ago
Ian made cookies for a bake sale. He made 91 cookies, including 30 cookies in the shape of a dog.
Yuliya22 [10]

Answer:

total sample space is 91

no of cookies in dog shape is 30

therefore

p(d)=30/91

8 0
2 years ago
Find the are of the SHADED region.
Mazyrski [523]
First find the area of the parallelogram


Area of parallelogram = b x h
= 12 x 7
= 84

Then find area of kite

Area of kite = (xy)/2
= (7 x 12)/2
= 84/2
= 42

Now we are gonna subtract the area of the kite from the area of the parallelogram.

84 - 42 = 42

Therefore the area of the shaded region is 42.
7 0
3 years ago
Other questions:
  • 9e + 4 = -5e + 14 + 13e =
    12·1 answer
  • What is the expanded equivalent of sin(a + b)
    15·2 answers
  • What is the value of b?
    11·1 answer
  • What is the equation of the circle if the center is (-4,10) and radius of 7
    6·2 answers
  • Choose the function
    7·1 answer
  • 15. Greg and Alana went out to dinner. Their dinner bill came to $68.89.
    6·1 answer
  • Josie bought a new mirror. The mirror has 5 sides. What is the shape of the mirror?
    10·2 answers
  • 10 years ago a father was 10 times old as his son. Form a linear equation expressing their present age
    11·1 answer
  • PLEASE HELP ME IM CRYING :(
    10·1 answer
  • 17 - 2n = 9 what’s the answer ?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!