4 years ago

How do you use units and convert them to understand and solve problems

1 answer:

4 0

<span>Units are used as a standard for measurement of the same quantity. It is a definite magnitude of the quantity that is defined by a convection.
Without them we could not be able to measure things.
All physical quantities have their units, For example: length is measured in meters, weight is measured in kilograms, power is measured in watts,...
With units we can understand "physical" problems and have an exact answer of the problem.</span>

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If f(x) = 6x – 4, what is f(x) when x = 8?

Lena [83]

Answer:

Step-by-step explanation:

F(x)=6(8)-4

6(8)=48-4=44

Hope this helps sry if I get it wrong.

4 0

3 years ago

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April has 5 milligrams of zinc and 0.25 milligrams of copper. How much more zinc does she have than copper?

netineya [11]

Answer:

the answer is 4.75

Step-by-step explanation:

5-0.25=4.75

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3 years ago

The side length of a square is x+1. write an expression that is equivalent to the perimeter of the square.

Amiraneli [1.4K]

4x + 4

This is because there are four sides of a square, and each side is x + 1.

x + 1 + x + 1 + x +1 + x + 1 = 4x + 4

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4 years ago

If 60 max is 40% what is full marks

ELEN [110]

The sentence can be interpreted as: 60 = 40% of what number
60/x = 40/100
Cross multiply
40x = 60(100)
40x = 6000
Divide both sides by 40
x = 150

7 0

3 years ago

In the diagram below of triangle ABC, DE is parallel to AC. IF AD = 20, DB = 10 and AC = 33, find DE.

sdas [7]

Answer:

Step-by-step explanation:

It's proportions my son.

x / 33 = 10 / 30

It's 10/ 30 because the whole BA is 30 in total

Then cross multiply.

30x = 330

x = 11

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3 years ago