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Natali [406]
3 years ago
12

If a<0 and b>0 is ab<0?​

Mathematics
1 answer:
salantis [7]3 years ago
3 0

Answer:

Yes.

Step-by-step explanation:

Any number less that 0, when multiplied by a positive number, will make it a negative number.

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Solve the differential equation y prime equals the product of 2 times x and the square root of the quantity 1 minus y squared .
MatroZZZ [7]

Answer:

1. y = sin(x²+C)

2. see below

Step-by-step explanation:

1. \frac{dy}{dx} = 2x\sqrt{1-y^2}

separation of variables

\frac{dy}{\sqrt{1-y^2} } = 2xdx

integration both sides\int\frac{dy}{\sqrt{1-y^2} } = \int2xdx

you should get :

sin^{-1} (y) = x^2+C remember constant of integration!!

2. y = sin(x²+C)

3 = sin(0+C)

y(0) = 3 does not have a solution because our sin graph is not shifted vertically or multiplied by a factor whose absolute value is greater than 1, so our range is [-1,1] and 3 is not part of this range

4 0
4 years ago
What is the value of h (-2) when h (3) = 32 +1?<br> Enter your answer in the box.<br> h (-2) =
just olya [345]

Answer:(-22)

Step-by-step explanation:

What is the value of h (-2) when h (3) = 32 +1?

hx3=33

33 divided by 3

which means h=11

that makes 11(-2)

=(-22)

8 0
3 years ago
PLEASE ANSWER ASAP *picture attached*
SVETLANKA909090 [29]

Answer:

x^{2} -2x-8

Step-by-step explanation:

(f g)(x) is equal to f(x) times g(x).  So you just need to multiply both of the equations together.  Use the foil method to multiply (x+2)(x-4)

(fg)(x)=f(x)*g(x)\\\\(fg)(x)=(x+2)(x-4)\\\\(fg)(x)=x^{2} -4x+2x-8\\\\(fg)(x)=x^{2} -2x-8\\

I have attached an image to better explain the foil method

4 0
4 years ago
A shirt was originally priced at $30. The store is having a 5% off sale. How much will you pay for the shirt after the discount
pishuonlain [190]

Answer:

$28.50

Step-by-step explanation:

multiply 30 by 5 then divide by 100 and subtract the answer by 30

30×5=150

150÷100=1.5

30-1.5=28.50

8 0
4 years ago
Choose all lengths that are equal to<br> 6 feet 12 inches.
Mumz [18]

Answer:

Can you show a picture? Or like tell us the options?

7 0
3 years ago
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