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3 years ago

How do you subtract integers?

Mathematics

2 answers:

Rzqust [24]3 years ago

8 0

Answer:

I'm assuming that you mean negative integers. If you need help with a specific problem, just let me know : )

Step-by-step explanation:

For example: -4 + -6 = -10 because the higher number is -, your answer will be negative. This problem is the same as the previous one; -4 - 6 = -10. This is because when you see a problem like this, you plus the minus sign or in other words you draw a vertical line through the - sign which would give you the same equation/answer.

sweet [91]3 years ago

4 0

Positive - Positive: Example: 5 - 2 = 3

Positive - Negative: Example: 5 - (-2) = 5 + 2 = 7

Negative -Negative: Example: -5 - (-2) = -5 + 2 = -3

Negative - Positive: Example: -5 - 2 = -7

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There are 36 students in mrs.Keaton's sixth grade class. If 5/12 of her students are girls, how many girls are in the class?

olga_2 [115]

There are 15 girls in the class.

7 0

3 years ago

Read 2 more answers

Complete the equation of the line through (-9,7) & (-6,-3)

scZoUnD [109]

Answer:

$y=-\frac{10}{3}x-23$

Step-by-step explanation:

we have the points

(-9,7) and (-6,-3)

step 1

Find the slope

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute the values

$m=\frac{-3-7}{-6+9}$

$m=-\frac{10}{3}$

step 2

Find the equation in point slope form

$y-y1=m(x-x1)$

we have

$m=-\frac{10}{3}$

$(x1,y1)=(-6,-3)$

substitute

$y+3=-\frac{10}{3}(x+6)$ ---> equation in point slope form

step 3

Find the equation of the line in slope intercept form

$y=mx+b$

we have

$y+3=-\frac{10}{3}(x+6)$

Isolate the variable y

Distribute right side

$y+3=-\frac{10}{3}x-20$

subtract 3 both sides

$y=-\frac{10}{3}x-20-3$

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7 0

3 years ago

F(x)=15x³+22x²-15x+2<br> Write f(x) as a product of linear factors.

Goryan [66]

Answer:

$(5x - 1)(3x - 1)(x + 2)$

Step-by-step explanation:

$(15 {x}^{3} + 22 {x}^{2} - 15x + 2)$

Apply Rational Root Theorem, our possible roots will be

plus or minus( 2/15, 2/5,2/3,2, 1/15,1/5,1/3,1).

I tried root -2 and it work so

If we apply synthetic dividon, we would be left with

$15 {x}^{2} - 8x + 1$

We can factor this regularly.

Apply AC method that a number

AC will multiply to 15 but add to -8.

The answer are -5 and -3 so we write this as

$15 {x}^{2} - 5x - 3x + 1$

Factor by grouping

$(15x {}^{2} - 5x) - (3x + 1)$

$5x(3x - 1) - 1(3x - 1)$

So our factor are

$(5x - 1)(3x - 1)(x + 2)$

3 0

3 years ago

i need help understanding and answer for this id be happy if someone could pleas help im overdue struggling in math thanks :)

nevsk [136]

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4 years ago

Fifteen more than three times a number is at most seven.

NNADVOKAT [17]

Answer: 3n + 15 ≤ 7

n = number

hope this helped! :D

5 0

3 years ago