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Varvara68 [4.7K]
3 years ago
5

Help for these to two pls

Mathematics
1 answer:
NeTakaya3 years ago
4 0

Answer:

1) 65%

2)-44%

Step-by-step explanation:

Formula:

((new value - old value)/(old value) )*100

If positive, it's an increase

if Negative, it's a decrease.

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A person exerts a 80 J of work by pulling a block along a horizontal surface with a
Gala2k [10]

According to the solving the displacement  of the block is:

= 40m

<h3>What does force-displacement mean?</h3>

A shift inside of an object's position is referred to as "displacement." It has a magnitude and a direction, making it a vector quantity. An arrow pointing from of the starting point to the finishing point serves as its symbol. For instance, an object's position changes if it moves from position A to position B.

<h3>Why is there a shift in the workforce?</h3>

The scalar product of displacement and force is equivalent to work. The cosine of the angle between two vectors is added to their lengths to form the scalar product of the two vectors. Work is defined as the product of force, displacement, and the sine of the angle formed by the force's and displacement's directions.

<h3>According to the given data:</h3>

The formula for work is W=F × d.

Work done  = 80J

Force = 20N

Displacement = ?

So,

W=F × d.

80 = 20 x d

d = 80/20

d = 40 m

According to the solving the displacement  of the block is:

= 40m

To know more about displacement visit:

brainly.com/question/11934397

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7 0
1 year ago
Sam has $15 more dollars than Sarah, Casey has 2 times as much as Sam. The total they have all together is $95, how much money d
Alja [10]

Answers:

  • Sarah has  $12.50
  • Sam has  $27.50
  • Casey has  $55

======================================================

Explanation:

x = amount of money Sarah has

x+15 = amount of money Sam has, since he has $15 more than her

2(x+15) = amount of money Casey has, since he has twice as much as Sam.

Let's add up those three expressions and set that sum equal to 95

Solve for x.

Sarah + Sam + Casey = 95

x+(x+15) + 2(x+15) = 95

x + x + 15 + 2x + 30 = 95

4x+45 = 95

4x = 95-45

4x = 50

x = 50/4

x = 12.50

This says that Sarah has $12.50

That must mean Sam has x+15 = 12.50+15 = 27.50 dollars

And Casey must have 2*27.50 = 55 dollars.

----------------

As a check,

Sarah+Sam+Casey = 12.50+27.50+55 = 95

So the answer is confirmed.

6 0
3 years ago
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Solve 2,401 = 76 – 2x.
inessss [21]

Answer:

The answer would be -1162.5

Step-by-step explanation:

7 0
3 years ago
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mina [271]

Answer:

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Step-by-step explanation:

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Mateo has 72 pounds of apples. He needs 34 pounds of apples for each batch of applesauce. How many batches of applesauce can Mat
mr Goodwill [35]

Answer:

  2 batches

Step-by-step explanation:

(72 lb)/(34 lb/bat) = 2 2/17 bat

___

72 ÷ 34 = 2 remainder 4.

Mateo can make 2 full batches, and will have 4 pounds of apples remaining.

The fraction 4/34 can be reduced to 2/17. That is the fraction of a batch that Mateo could make with the extra 4 lbs. of apples.

3 0
3 years ago
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