2 years ago

Adding and Subtracting Integers (-5) + (+45)(-5) + (+48)

1 answer:

7 0

1. 40
2. 43
its just like subtracting when you add a negative number to a positive one. flip them around! makes it a lot easier.

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How many times smaller is 2 x 10-13 than 4 x 10-10

polet [3.4K]

Answer:

30/7

Step-by-step explanation:

2 x 10 -13

20 - 13

4 x 10 -10

40 - 10

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2 years ago

2(6k+8)-6k=4<br> What is the answer

lina2011 [118]

Answer:

k=-2

Step-by-step explanation:

2(6k+8)-6k=4

12k+16-6k=4

6k+16=4

6k=-12

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3 years ago

Krissi has $14 in the bank and earns $8 a day. John has 35$ and earns $5 a day when will krissi have more money?

SOVA2 [1]

Answer: 8 days

Step-by-step explanation:

K=14+8x

J=35+5x

when K=J they will have the same amount

14+8x=35+5x

8x=21+5x

3x=21

x=7 days until they have the same amount- 8 days until she has more

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2 years ago

IF A CHICKEN FARM SOLD 3,000 DOZEN EGGS LAST WEEK HOW MANY INDIVIDUAL EGGS WERE SOLD?

weeeeeb [17]

There are 250 eggs sold by not grouped in dozens

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2 years ago

Read 2 more answers

Use partial fraction expansion to evaluate: LaTeX: \int\frac{x-1}{x^2+3x+2}dx ∫ x − 1 x 2 + 3 x + 2 d x a. LaTeX: -2\ln\left|x+1

ohaa [14]

$\frac{x-1}{x^2+3x+2}\\\frac{x-1}{(x+1)(x+2)}\\\frac{x-1}{(x+1)(x+2)}=\frac{A}{x+2}+\frac{B}{x+1}\\x-1=A(x+1)+B(x+2)\\\\\text{ Let } x=-1 \text{ then } -2=A(0)+B(-1+2) \text{ which means } B=-2\\\\\text{ Instead of choose } x \text{ to be -1, let's now set it equal to -2 to find } A\\\\-3=A(-1)+B(-2+2)\\-3=-A\\A=3\\\\ \text{ So your integral becomes } \\\int \frac{3}{x+2} dx+\int \frac{-2}{x+1} dx\\3 \ln|x+2|-2\ln|x+1|+C\\\\or\\-2\ln|x+1|+3\ln|x+2|+C$

8 0

2 years ago