All categories

3 years ago

If x=3 what is the value of the expression -2x(2 x^3+3x^2-5x)

Mathematics

1 answer:

aalyn [17]3 years ago

7 0

Answer:

The value would be -396

Step-by-step explanation:

In order to find this, put in 3 for every value of x and then simplify.

-2x(2 x^3+3x^2-5x)

-2(3)(2(3)^3+3(3)^2-5(3))

-6(2(27) + 3(9) - 15)

-6(54 + 27 - 15)

-6(66)

-396

You might be interested in

What is the sales tax rate if a $7,190 purchase will have $568.01 of sales tax added to it?

inna [77]

Answer:

7.9%

Step-by-step explanation:

568.01/7190=0.079=7.9%

5 0

3 years ago

What is the intercept of a line that has a slope of 3 and passes through point (-1,-7)?

IRISSAK [1]

Y = 3x + b
Now plug in points
-7 = 3(-1) + b
-7 = -3 + b
b = -4
The y intercept is -4

7 0

3 years ago

A Fair coin is tossed and a marble is chosen from the bag whose contents are shown below. what is the probability of the coin La

Vera_Pavlovna [14]

Answer:

P(Coin landing heads and blue marble is randomly selected) = 3/20.

Step-by-step explanation:

In this question, two events simultaneously take place. First, all the probabilities have to be identified. It is mentioned that the coin is a fair coin, therefore the probabilities of all the outcomes associated with the coin tossing will be equal. Therefore:

P(Coin landing heads) = 1/2.

P(Coin landing tails) = 1/2.

There are a total of 3 blue + 4 green + 3 red = 10 marbles in the bag. Therefore:

P(Selected marble is blue) = 3/10.

P(Selected marble is green) = 4/10.

P(Selected marble is red) = 3/10.

Assuming that both the events are independent, the probabilities of both the events can safely be multiplied. Therefore:

P(Coin landing heads and blue marble is randomly selected) = 1/2 * 3*10 = 3/20.

Therefore, the answer is 3/20!!!

3 0

3 years ago

Read 2 more answers

Find the quotient,a. 70 /10 =a

Orlov [11]

The answer is 7 because 70 divided by 10 is 7

8 0

3 years ago

There are 30 blue balls, 40 red balls, and 30 white balls in a bag of balls. What is the conditional probability of choosing a b

natulia [17]

Answer: So, the probability will be

$P( \text{getting a blue ball })=\frac{30}{70}=\frac{3}{7}$

Step-by-step explanation:

Since we have given that

Number of blue balls =30

Number of red balls = 40

Number of white balls = 30

Since there are 100 balls in total ,

As we have given that there is no white ball chosen.

So, only 70 balls are left with us , from which we choose a blue ball

So, the probability will be

$P( \text{getting a blue ball })=\frac{30}{70}=\frac{3}{7}$

4 0

3 years ago

Read 2 more answers