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Art [367]
3 years ago
8

Jack is 2 years older than Bob. What was the difference between their ages one year ago? PLS HELP MY BRAIN IS DUM TODAY :(

Mathematics
1 answer:
viva [34]3 years ago
7 0

Answer:

Well, I'm guessing it's still gonna be 2 years age diff. I'm 18 months older than my sister no matter if it was years ago... I am just guessing so..

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Solve y' + 2xy = 2x^3, y(0) = 1.
dalvyx [7]
This is an ODE of the form y' + P(x)y = Q(x)
IF = e^{ \int\limits {P(x)} \, dx }=e^{ \int\limits {2x} \, dx }=e^{x^2}
Multiply through by IF
e^{x^2}y'+2xe^{x^2}y=2x^3e^{x^2} \\ (e^{x^2}y)'=2x^3e^{x^2} \\  \int {(e^{x^2}y)'} \, dx = \int {2x^3e^{x^2}} \, dx  \\ e^{x^2}y=x^2e^{x^2}-e^{x^2} + c \\ y=c_1e^{-x^2}+x^2-1
But y(0) = 1
1=c_1e^{-(0)^2}+(0)^2-1 = c_1-1 \\ c_1=1+1=2
Therefore, solution is
 y=2e^{-x^2}+x^2-1
3 0
3 years ago
The table shows the number of subscribers to several Internet providers. Determine if each statement is true or false.
WITCHER [35]

Answer:

A - True

B - False

Step-by-step explanation:

Looking at option A,

Company B had 3.12 subscribers and earned 119. To find each subscriber's value we divide 119 by 3.12

119/3.12 = 38.14

Looking at Option B,

Company A had 2.45 subscribers and earned 108. To find each subscriber's value, we divide 108 by 2.45

108/2.45 = 44.08

Hence, for Option A, each subscriber paid about $40 is correct because it's close to 38.14

For Option B, each subscriber paid about 30 is incorrect since it's way over, 44.08.

Thus,

A - True

B - False

4 0
3 years ago
WILL MARK BRAINLIEST HELP ASAP
OLga [1]
I’m not sure if this is right. But I think it’s 29

x=4
8(4) -3
32-3=29
4 0
3 years ago
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At Martin Nature Center, the park ranger was showing Mrs. Rhames' class a comparison of a tree's age and the diameter of the tre
sdas [7]
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ax+b=y

We must solve for a and b with the given information.

If (x, y) is (1, 4), we have:

a+b=4

If (x, y) is (10, 25), we have:

10a+b=25

Multiply the first equation by 10 to get:

10a+10b=40

Subtract the second equation from this to get:

9b=25

Thus b=25/9.  a=4-25/9=11/9, so our equation is 11x/9+25/9=y.
5 0
3 years ago
What is the square root of 900
maksim [4K]

Answer:

30

Step-by-step explanation:

6 0
3 years ago
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