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schepotkina [342]
3 years ago
14

How do i work out for adding integers?

Mathematics
1 answer:
Talja [164]3 years ago
6 0

Answer:

To add integers having the same sign, keep the same sign and add the absolute value of each number. To add integers with different signs, keep the sign of the number with the largest absolute value and subtract the smallest absolute value from the largest. Subtract an integer by adding its opposite.

Step-by-step explanation:

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Solve for y:<br><br> -y+6+6y=9
Marina CMI [18]
-y + 6 + 6y = 9

First, simplify -y + 6 + 6y to 5y + 6. / Your problem should look like: 5y + 6 = 9
Second, subtract 6 from both sides. / Your problem should look like: 5y = 9 - 6
Third, subtract 9 - 6 to get 3. / Your problem should look like: 5y = 3
Fourth, divide both sides by 5. / Your problem should look like: y =  \frac{3}{5}

Answer as fraction: y = \frac{3}{5}
Answer as decimal: 0.6

8 0
3 years ago
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The frequency distribution shows the lengths, in inches, of available baseball bat at a batting cage. what is the mean of the fr
ivanzaharov [21]
The mean of a frequency distribution is given by
<span>
\bar{x}= \frac{\Sigma fx}{\Sigma f} \\  \\  = \frac{(27\times2)+(28\times5)+(31\times3)+(33\times1)+(34\times4)}{2+5+3+1+4} \\  \\  = \frac{54+140+93+33+136}{15} = \frac{456}{15} =30.4</span>
6 0
4 years ago
How many gallons of a 60​% antifreeze solution must be mixed with 70 gallons of 10​% antifreeze to get a mixture that is 50​% ​a
Mashcka [7]
It should be half antifreeze and then half water because you have to mix together 
7 0
3 years ago
2
Murljashka [212]

Answer:

C.  no solutions

Step-by-step explanation:

Both equations have a slope of -2, but have different y-intercepts.  Therefore, the graphs of the equations are parallel, but don't coincide, nor do they intersect.  So, there are no solutions

6 0
3 years ago
In Exercise, find the derivative of the function.<br> y = 3ex - xex
nevsk [136]

Answer:

the question is incomplete, the complete question is "find the derivative of the function y=3e^{x}-xe^{x}"

answer: \frac{dy}{dx}=(2-x)e^{x}.

Step-by-step explanation:

From the equation,  y=3e^{x}-xe^{x}, we approach the question using the differentiation of a product and differentiation of a sum simultaneously,

the differentiation of a sum is express as

f(x)=u(x)+v(x)+.....w(x) then

\frac{df(x)}{dx}=\frac{du(x)}{dx}+\frac{dv(x)}{dx}+...\frac{dw(x)}{dx}.\\

For the differentiation of a product we have

 f(x)=u(x)v(x), then

\frac{df(x)}{dx}=\frac{dv(x)}{dx}u(x)+\frac{du(x)}{dx}v(x)

hence if we go by the formula we arrive at

for   y=3e^{x}

let u(x)=3 hence du/dx=0 and

v(x)=e^{x} and \frac{dv(x)}{dx}=e^{x}

hence \frac{dy}{dx}=3e^{x}+0e^{x}\\\frac{dy}{dx}=3e^{x}---equation 1\\

Also for y=-xe^{x}\\\frac{dy}{dx}=-e^{x}-xe^{x}---equation 2.

if we add equation 1 and equation 2 we arrive at

\frac{dy}{dx}=3e^{x}-e^{x}-xe^{x}\\\frac{dy}{dx}=(3-1-x)e^{x}\\\frac{dy}{dx}=(2-x)e^{x}.

4 0
3 years ago
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