1.) 2.5
2.) 3
3.)12.5
Pls give brainliest
The weight in kilograms of an object that weighs 70 pounds is 31.5 kilograms.
<h3>How to calculate the value?</h3>
Given that the number of kilograms that an object weighs varies directly with the number of pounds and that an object weighs 45 kilograms weighs 100 pounds.
This will be:
y = mx
y = weight in kilograms
x = weight in pounds
k = constant
45 = 100k
Divide
k = 45/100
k = 0.45
The equation will be written as y = 0.45x
Therefore, when the object weighs 70 pounds, this will be:
y = kx
y = 0.45 × 70
y = 31.5
The weight in kilograms is 31.5kg
Learn more about proportional relationship in:
brainly.com/question/2143065
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I.) (5x+3)/4-(2x-4)/3=5
Clear fractions:
3·((5x+3)/4)=15x+9
4·((2x-4)/3)=8x-16
15x+9-(8x-16)=5
15x+9-8x+16=5
Combine like terms:
7x+25=5
7x=-20
x=-20/7
II.) (3/11)·(5/6)-(9/12)·(4/3)+(5/13)·(6/15)
Remember PEMDAS
So first multiply:
3/11·5/6=15/66
9/12·4/3=3/3·1/1=3/3=1
5/13·6/15=1/13·6/3=6/39=2/13
(15/66)-1+(2/13)
Combine:
15/66-1/1=15/66-66/66=-51/66
-51/66+2/3=-51/66+44/66=-7/66
Answer: -7/66 :)
The slope-intercept form of the equation for a line with a slope of -4 and a y-intercept of -2 is ...
y = -4x -2
