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torisob [31]
3 years ago
6

How do you know weather to add or subtract when you use the distributive property to multiply

Mathematics
2 answers:
svlad2 [7]3 years ago
5 0

Step-by-step explanation:

To answer your question, I will give two examples.

First and foremost, distributive property of a system of linear expression in algebra allows us to simply an expression by following the rule of expansion.

now, to know whether to add, lets take a look at this example;

                               a(b+c) = ab + bc

simplifying the expression above gives  ab + bc

this shows that when you are using the distributive property to multiply an addition, you will add the result.

on the other hand, lets look at ;       a(b-c) = ab - bc

the result shows that when you are using the distributive property to multiply a difference of variables or number, you will subtract the result.

                               

   

Elza [17]3 years ago
3 0
Use the phrase pemdas

<span>it shows the order you solve. parenthesis, exponents, multiplication, division, addition, and then subtraction. ask me if you need any other help! </span>
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Your hourly salary increased from $14 to $29. What is the percent increase in your<br> salary?
V125BC [204]

Answer:

107%

Step-by-step explanation:

$14 to $29

Original number/start = $14

End number = $29

Increase = $29 - $14 = $15

% increase = Increase ÷ Original Number × 100

Substitute in known values

% increase = 15 ÷ 14 × 100

Divide

% increase = 1.07 × 100

Multiply

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Hope this helps :)

4 0
3 years ago
Read 2 more answers
Find the volume of the cylinder. Use 3.14 for π. Round to the nearest tenth.
lakkis [162]

Answer:

62.8 m^2

Step-by-step explanation:

The volume of a cylinder is given by

V = pi r^2 h  where r is the radius and h is the height

V = (3.14) ( 2)^2 *5

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8 0
2 years ago
Read 2 more answers
-3x^{2}-21x-54 what are the zeros? (Solutions)
Irina-Kira [14]
The only way to solve if it is equal to something
assuming that the teacher wanted you to make it equal to zero do
0=-3x^2-21x-54

remember if we can do
xy=0 then assume x and y=0

so factor

0=-3x^2-21x-54
undistribute the -3
0=-3(x^2+7x+18)
remember 0 times anything=0 so
x^2+7x+18 must equal zero
use quadratice formula which is

if you have
ax^2+bx+c=0 then
x=\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}

x^2+7x+18
a=1
b=7
c=18

x=\frac{-7+/- \sqrt{7^{2}-4(1)(18)} }{2(1)}
x=\frac{-7+/- \sqrt{49-72} }{2}
x=\frac{-7+/- \sqrt{-23} }{2}
i=√-1
x=\frac{-7+/- i\sqrt{23} }{2}



the zerose would be
x=\frac{-7+ i\sqrt{23} }{2} or \frac{-7- i\sqrt{23} }{2}




4 0
3 years ago
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egoroff_w [7]

Answer:  The x-intercept is where a line crosses the x-axis, and the y-intercept is the point ... Thinking about intercepts helps us graph linear equations. ... Looking at the graph, we can find the intercepts. ... We're asked to determine the intercepts of the graph described by the following linear equation: ... Applying intercepts and slope.

Step-by-step explanation:

3 0
3 years ago
What is 4×7 Please answer
stealth61 [152]
4 x 7= 28

BTW no calculator. Did it in my head. Hope this helps!
5 0
3 years ago
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