Step-by-step explanation:
First you have to convert each number to improper fractions.
Next you have to multiply denominator to denominator, and fraction to fraction.
Then simplify your final answer to the lowest form possible.
Hope this helps :)
Answer:
-130.8
Step-by-step explanation:
The average of the two slope values is ...
(-148.8 -112.8)/2 = -261.6/2 = -130.8
The slope of the tangent line at t=15 is approximately -130.8.
I think u have to multiply the radius and diameter. umm if i am correct the ans is 34396.95. or i think u have to divide. if u divide, the ans is 28.31. if i am incorrect let me know pls. and sry i cant help with no.3. thats difficult.
hope my ans is right. if ans is correct pls mark as brainliest ans.
Typically in science, centimeters are used when measuring.
Answer:
X = 14 kg
Y= 7 kg
Step-by-step explanation:
LET X and Y equal the amounts of brand X and Y
X = kg of brand X
Y = kg of brand Y
we know:
1) X + Y = 21 (kg)
2) 1X + 4Y = 2(X + Y) (This is the cost/kg * amounts for total cost)
Coefficients 1,4,2 are the cost/kg)
substitute eq. 1 (X+Y), = 21 into right side of equation 2
1X + 4Y = (21)*2
use elimination to solve 2 equations
X + Y = 21
X + 4Y = 42 (now subtract, note: I wrote the 1X as just X)
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0 -3Y = -21 OR Y = 7 kg so X = (21-7) OR X = 14 kg