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2 years ago

There are 20 baseball cards and 10 football cards on display at a sports museum. Noah says that

Mathematics

1 answer:

erica [24]2 years ago

6 0

Answer:

They are both right becuase if you just take away 1 from 20 and 10 you get 2 and 1. For the 4:2 one take away 1 and mutiply by 2 equalling 4:2 but they are still the same thing.

Step-by-step explanation:

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I really need some help on this question please!

madam [21]

Answer:

2.5

Step-by-step explanation:

I used the process of elimination :

For A and B, you can't have a negative number since it is a positive correlation

For C, 1 as a slope isn't reasonable

3 0

3 years ago

If m1+m4=70 find the sum of 6+7

Natasha_Volkova [10]

290 degrees is your answer :)

4 0

3 years ago

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Solve for x: z=m-x *

astraxan [27]

Answer:

x = m - z

Step-by-step explanation:

z = m - x

Add x to both sides.

x + z = m

Subtract z from both sides.

x = m - z

8 0

2 years ago

How do you integrate arctan(x dx? i think that if you simplify the integral you get:?

Temka [501]

Integration by parts will help here. Letting $u=\arctan x$ and $\mathrm dv=\mathrm dx$ , you end up with $\mathrm du=\dfrac{\mathrm dx}{1+x^2}$ and $v=x$ . Now

$\displaystyle\int\arctan x\,\mathrm dx=uv-\int v\,\mathrm du$
$\displaystyle\int\arctan x\,\mathrm dx=x\arctan x-\int\frac x{1+x^2}\,\mathrm dx$

For the remaining integral, setting $y=1+x^2$ gives $\dfrac{\mathrm dy}2=x\,\mathrm dx$ , so

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

Putting everything together, you end up with

$\displaystyle\int\arctan x\,\mathrm dx=x\arctan x-\frac12\ln(1+x^2)+C$

6 0

2 years ago

Pooja’s plant began sprouting 2 days before Pooja bought it, and she had it for 98 days until it died

xxMikexx [17]

Answer:

after sprouting it lived for 100 days

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers