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8_murik_8 [283]
2 years ago
13

Let U = {all soda pops}, A = {all diet soda pops),

Mathematics
1 answer:
klasskru [66]2 years ago
8 0
The answer is d.
good luck
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Which statement is an example of the Addition Property of Equality?
weqwewe [10]
The answer would be p + s = q + s      ...so it would be B.
6 0
3 years ago
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In the expression 3x² + y − 5, which of the following choices is the exponent in the term 3x²?
quester [9]

Answer: the exponent would be the 2

Step-by-step explanation:

7 0
3 years ago
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Can someone answer this for me.
Marina CMI [18]

Answer:

A)  slope is 2/5 (positive slope)

B) slope is -2/6 (negative slope)

C) Yes, with different points, the slope remains the same.

3 0
2 years ago
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How do you do this question?
ElenaW [278]

x*y' + y = 8x

y' + y/x = 8 .... divide everything by x

dy/dx + y/x = 8

dy/dx + (1/x)*y = 8

We have something in the form

y' + P(x)*y = Q(x)

which is a first order ODE

The integrating factor is u(x) = e^{\int P(x)dx} = e^{\int (1/x) dx} = e^{\ln(x)} = x

Multiply both sides by the integrating factor (x) and we get the following:

dy/dx + (1/x)*y = 8

x*dy/dx + x*(1/x)*y = x*8

x*dy/dx + y = 8x

y + x*dy/dx = 8x

Note the left hand side is the result of using the product rule on xy. We technically didn't need the integrating factor since we already had the original equation in this format, but I wanted to use it anyway (since other ODE problems may not be as simple).

Since (xy)' turns into y + x*dy/dx, and vice versa, this means

y + x*dy/dx = 8x turns into (xy)' = 8x

Integrating both sides with respect to x leads to

xy = 4x^2 + C

y = (4x^2 + C)/x

y = (4x^2)/x + C/x

y = 4x + Cx^(-1)

where C is a constant. In this case, C = -5 leads to a solution

y = 4x - 5x^(-1)

you can check this answer by deriving both sides with respect to x

dy/dx = 4 + 5x^(-2)

Then plugging this along with y = 4x - 5x^(-1) into the ODE given, and you should find it satisfies that equation.

6 0
3 years ago
Hi could someone just help me with this I'm not sure if i'm doing it correctly.
salantis [7]
Two angles are supplementary when they <span>add up to 180 degrees </span>⇒
m∠1 + m∠2 = 180°
4y + 7 + 9y + 4 = 180
13y + 11 = 180
13y = 180 - 11
13y = 169
y = 169/13
y = 13

m∠2 = 9y + 4 = 9 * 13 + 4 = 121°
4 0
3 years ago
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