3 years ago

Hello! I need help please answer these correctly thanks in advance

Mathematics

1 answer:

lana [24]3 years ago

8 0

Answer:

1a the square root of 37

1b the same as a

2 y=3x+2

Step-by-step explanation:

a and b use the distance formula

for number 2 use rise over run to find the slope and find where the line intersects to find the y intercept.

Hope this helps :)

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How do I evaluate this integral?<img src="https://tex.z-dn.net/?f=%20%5Cint%5Climits%20%7B%20%5Cfrac%7Bx%7D%7Bx%5E4%2B1%7D%20%7D

inessss [21]

One thing you could try is to set $x=\sqrt y$ . This makes $y=x^2$ , so that $\mathrm dy=2x\,\mathrm dx$ , and $y^2=x^4$ . So the integral is

$\displaystyle\int\frac x{x^4+1}\,\mathrm dx=\frac12\int\frac{\mathrm dy}{y^2+1}=\frac12\arctan y+C=\frac12\arctan(x^2)+C$

A "trickier" way to do it is to write

$x^4+1=(x^2+\sqrt2x+1)(x^2-\sqrt2x+1)$

so you could decompose the integrand into partial fractions. But that's more work than needed.

4 0

3 years ago

Please help! Will mark brainliest

Gennadij [26K]

It’s the third one.

144. 6 x 6 = 36

36 x 8 = 288

288 divided by 2 ( divide by half the dotted line)

answer : 144

7 0

3 years ago

In how many ways can you rearrange the letters in the word REACH?

Semenov [28]

5x5=25 so 25 different ways

4 0

3 years ago