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Romashka [77]
2 years ago
14

There were 20 boys and 20 girls in a chorus. What is the ratio of boys to girls

Mathematics
1 answer:
aliya0001 [1]2 years ago
3 0

Answer:

1:1

Step-by-step explanation:

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Giải các phương trình vi phân sau<br> y' - y/x+1 = 2
KatRina [158]

It looks like the differential equation is

y'-\dfrac y{x+1}=2

Multiply both sides by 1/(<em>x</em> + 1) :

\dfrac{y'}{x+1}-\dfrac y{(x+1)^2} = \dfrac2{x+1}

The left side is now a derivative of a product,

\left(\dfrac y{x+1}\right)' = \dfrac2{x+1}

Integrate both sides with respect to <em>x</em> :

\dfrac y{x+1} = 2\ln|x+1|+C

Solve for <em>y</em> :

y = 2(x+1)\ln|x+1| + C(x+1)

3 0
3 years ago
Given that
valentina_108 [34]

Answer: x= -3.25

Step-by-step explanation:

R=4x+6y   11=4x+6(4)     11=4x+ 24     11-24=4x   -13=4x  -13/4=x  x=-3.25

11=4(-3.25)+ 6(4)  11= -13+24

6 0
2 years ago
The midpoint of ST is M=(-2.1). One endpoint is S=(-6. -4).
qwelly [4]
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7 0
3 years ago
Joshua wants to burn at least 400 calories per day, but no more than 600. He does this by walking and playing basketball. Assumi
Kamila [148]
All you have to do is put the walking amount in for w and basketball in for b. Do it for all of these, if it is less than 400 or greater than 600, it is not a solution.

(4 x 40) + (5 x 40) = 360 so reject because it is less than 400.

I'll let you do the rest.
3 0
3 years ago
Read 2 more answers
Find the volume of the composite figure. Round to the nearest tenth. The base of each pyramid is a square with a side length of
antiseptic1488 [7]

Answer:

225 in3

Step-by-step explanation:

5 x 5 = 25 as the base

25 x 9 = 225 as volume

If this is right, I would like brainliest

7 0
3 years ago
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