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3 years ago

6

How do you get 12 by using the numbers nine and three and two and six but you can only use each number once in each operation wh

ich is adding subtracting multiplying and division only once number

1 answer:

Vesna [10]3 years ago

8 0

A valid equation will be 9/3x2+6

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the mean of marks scored by 100 students was found to be 40. Later on, it was discovered that a score of 53 was misread as 83. F

liberstina [14]

As the sum of marks of others remain unchanged , let their sum be x . As the mean using 83 was 40 , we have ,

(x +83)/100 = 40

x + 83 = 4000

x = 3917

Now mean using 53 ,

(x +53)/100

(3917+53)/100

39.7.

Hope it helps , plz mark as brainiest :-)

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3 years ago

What is the value of k if 2x^3-3x^2+kx-4 is divided by x-3 and gives a remainder of -7?

Alik [6]

By the polynomial remainder theorem, the remainder upon dividing a polynomial $p(x)$ by $x-c$ is the same as the value of $p(c)$ .

Here $p(x)=2x^3-3x^2+kx-4$ and $c=3$ . We have

$p(3)=23+3k=-7\implies k=-10$

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3 years ago

At a particular restaurant, 62% of all customers order an appetizer and 41% of all customers order dessert. If 69% of all custom

jekas [21]

Answer:

In terms of probablity (A - appetizer oredered, B - desert ordered)

P(A)=63%

P(B)=40%

P(AorB)=76%.

Using the formula:

P(AorB)=P(A)+P(B)-P(A&B) we get P(A&B)=63%+40%-76%=27% (probability we were looking for).

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2 years ago

Consider the equation 43 - 5 (2x + 1) = ax + b.

Trava [24]

Answer:

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Step-by-step explanation:

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3 years ago

You have a ruler of length 1 and you choose a place to break it using a uniform probability distribution. Let random variable X

salantis [7]

Answer:

Step-by-step explanation:

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3 years ago