The right answer is Option C.
Step-by-step explanation:
Given equations are;
-2x+4y=17 Eqn 1
3x-10y= -3 Eqn 2
Adding Eqn 1 and Eqn 2;
The right answer is Option C.
Keywords: linear equations, addition
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Answer:
1 a. warmer
b. -8 is closer
c. -2 degrees
d.his elevation is 10 ft below sea level
2 a.0
b. -300
c. -450
3 Basically a fraction is division so divide the numerator by the denominator to get the calculation. For example 2.1 divided by 1.5 equals 1.4.
Hello.
The mathematical concept of this problem is basic once you get down to it. The question asks, "How many
times more minutes does Shawn listen to than Greg?"
Remember the "How many" rules:
· "How many more" suggests
subtraction· "How many times" suggests
divisionLet's also take a look at our opening sentence: "For every 9 minutes of music Shawn listens to, Greg listens to 4 minutes of music." This means we can set it up as a fraction, as we have the phrase "For every" in our sentence. So, let's do that.
is our fraction;
To simplify, we need to divide our numerator (the number on the top) by our denominator (the number on the bottom).
9 / 4 = 2.5
This is our rate, or how many
times more music Shawn listens to than Greg.
Your answer is: "Shawn listens to 2.5 times more music than Greg."
I hope this helps!
14.94 cm ( to 2 dec. places )
We require the sum totals of the 2 groups before calculating the mean of all 14
using mean = 
Children's sum
12.6 = 
( cross-multiply )
sum = 6 × 12.6 = 75.6
Adult's sum
16.7 = 
( cross- multiply )
sum = 8 × 16.7 = 133.6
Total sum of all 14 = 75.6 + 133.6 = 209.2
mean = 
= 14.94 cm
