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3 years ago

Given the expression three less that a number what is the value the expression if the number is equal to -17

Mathematics

1 answer:

jek_recluse [69]3 years ago

6 0

Answer:

-17 - 3 = -20

Step-by-step explanation:

Let's start by representing the equation numerically, with x representing "a number." Less than tells us to subtract:

x - 3

Now the problem says that "the number" is equal to -17, so plug in -17 for x.

-17 - 3 = -20

(If this is difficult, think of it like -17 + -3 = -20. That always helps me!)

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Find the value of the numerical expression 2^4

den301095 [7]

The value of this expression is 16. In exponential problems you can multiply the base by the number of times the exponent is. In this case it would be: 2*2*2*2. Then just multiply and get the product of 16.

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3 years ago

My question is 4318 divided by 7 please tell me

Vikki [24]

1.You should set up the long division.


2 Calculate 43 ÷ 7, which is 6 with a remainder of 1.


3 Bring down 1, so that 11 is large enough to be divided by 7.


4 Calculate 11 ÷ 7, which is 1 with a remainder of 4.

5 Bring down 8, so that 48 is large enough to be divided by 7.


6 Calculate 48 ÷ 7, which is 6 with a remainder of 6.


7 Therefore, 4318 ÷ 7 = 616 with a remainder of 6.

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3 years ago

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Nutka1998 [239]

Answer:

Step-by-step explanation: substitute 2 for all the x’s and add.

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3 years ago

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. Let X and Y be random variables of possible percent returns (0%, 10%,

bazaltina [42]

(a) The marginal distribution of X is

Pr(X = x) = ∑ Pr(X = x, Y = y)

… = 0.0625 + 0.0625 + 0.0625 + 0.0625

… = 0.25

That is, the first equality follows from the law of total probability, with the sum taken over y from {0, 5, 10, 15}. Each probability Pr(X = x, Y = y) is given in the table to be 0.0625.

Similarly, the marginal distribution of Y is

Pr(Y = y) = 0.25

(b) Yes, they're independent because

Pr(X = x, Y = y) = 0.0625,

and

Pr(X = x) Pr(Y = y) = 0.25 • 0.25 = 0.0625.

E[X] = ∑ x Pr(X = x)

… = 0.25 ∑ x

… = 0.25 (0 + 5 + 10 + 15)

… = 7.5

and you would find the same mean for Y,

E[Y] = 7.5

The variance of X is

V[X] = E[X^2] - E[X]^2

… = (∑ x^2 Pr(X = x)) - 7.5^2

… = 0.25 (∑ x^2) - 56.25

… = 0.25 (0^2 + 5^2 + 10^2 + 15^2) - 56.25

… = 31.25

and similarly,

V[Y] = 31.25

(each sum is taken with x and y from {0, 5, 10, 15})

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3 years ago

Number six on the page

Mekhanik [1.2K]

A square has the same length on all of it's sides. The area of a square is side times side. So it's 2.2×2.2=?

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