All categories

3 years ago

Is my answer correct. If not, what is the answer ? Thank you

Mathematics

1 answer:

kirill115 [55]3 years ago

8 0

Answer:

P = 3

Q = -4

R = 22

Step-by-step explanation:

Expand both sides and compare coefficients.

5Px^2 -PQx +10x -2Q = 15x^2 + Rx +8

Compare coefficients of x^2

5P = 15 => P = 3

Compare constant terms

-2Q = 8

Q = -4

Compare coefficients of x

-PQ + 10 = R

-(3)(-4) + 10 = R

R = 10 + 12 =22

You might be interested in

The area of a rectangular piece of sheet metal is 216 ft. the width of the sheet is 6 ft less than the length what are the dimen

Ludmilka [50]

Just multiply lol i think

4 0

3 years ago

During bowling practice, Marley rolled 14 strikes out of 70 attempts. what percent of Marleys attempt were strikes?

Roman55 [17]

Answer:

20%

Step-by-step explanation:

14/70 = 0.2

0.2 x 100= 20

3 0

3 years ago

Read 2 more answers

A machine has four components, A, B, C, and D, set up in such a manner that all four parts must work for the machine to work pro

olchik [2.2K]

Answer:

0.756

Step-by-step explanation:

It is given that a machine has four components, A, B, C, and D.

$P(A)=P(B)=0.93, P(C)=0.95,P(D)=0.92$

If these components set up in such a manner that all four parts must work for the machine to work properly.

We need to find the probability that the machine works properly. It means we have to find the value of $P(A\cap B\cap C\cap D)$ .

If two events X and Y are independent, then

$P(X\cap Y)=P(X)\times P(Y)$

Assume the probability of one part working does not depend on the functionality of any of the other parts.

$P(A\cap B\cap C\cap D)=P(A)\times P(B)\times P(C)\times P(D)$

Substitute the given values.

$P(A\cap B\cap C\cap D)=0.93\times 0.93\times 0.95\times 0.92$

$P(A\cap B\cap C\cap D)=0.7559226$

$P(A\cap B\cap C\cap D)\approx 0.756$

Therefore, the probability that the machine works properly is 0.756.

7 0

3 years ago

List all number sets that apply to each number.

Airida [17]

Yeah i agree with them y=10

8 0

3 years ago

Which statement is false?

Orlov [11]

Answer:

Step-by-step explanation:

all numbers are real numbers

4 0

4 years ago

Read 2 more answers