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3 years ago

(xy + 3x + 2)-(3x+y) Pls help

Mathematics

2 answers:

Orlov [11]3 years ago

6 0

Answer:

sln

(xy +3x+2)-(3x+y)

xy+3x+2-3x-y

xy+2-y

sdas [7]3 years ago

5 0

Answer:

xy + 2 - y

Step-by-step explanation:

( xy + 3x + 2 ) - ( 3x + y )

→ Remove brackets

xy + 3x + 2 - 3x - y

→ Simplify

xy + 2 - y

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What is the, in units, between (-5,8) and (4,-4) in the coordinate plane

stiks02 [169]

Do you just want the equation ?

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3 years ago

2 cards are chosen from a deck of cards. The first card is replaced before choosing the second card. What is the probability tha

fgiga [73]

Answer:

The probability that the first card chosen is club and second card chosen is of heart is .

Step-by-step explanation:

Total number of cards in the deck is 52 (total number of cases).

Probability of an event E can be formulated as:

$P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}$

For event A, number of cards of type club = 13 (favorable cases)

So,

$P(A) = \dfrac{13}{52} \\\Rightarrow P(A) = \dfrac{1}{4}$

For event B, number of cards of type heart = 13 (favorable cases)

So,

$P(B) = \dfrac{13}{52} \\\Rightarrow P(B) = \dfrac{1}{4}$

It is given that card is replaced before choosing the second card.

These events A and B are independent events, happening of one event does not effect the happening of other. And probability of both happening together can be found as following:

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

$\Rightarrow P(A \cap B) = \dfrac{1}{4} \times \dfrac{1}{4}\\\Rightarrow P(A \cap B) = \dfrac{1}{16}$

The probability that the first card chosen is club and second card chosen is of heart is $\frac{1}{16}$ .

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3 years ago

I invest £2,000 at a rate of 5% compound interest. I leave the amount 5 years. How much will I have after 5 years?

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3 years ago

Read 2 more answers

On a quiz, tina scored 4 points more than julia and earned 2 points in extra credic. Enter an expression that represent tina's s

andre [41]

Julia’s score is y and Tina’s score is y + 6.

Step-by-step explanation:

Let us take Julia’s score be y.

First Tina scored 4 points more than Julia, so the expression is y + 4.

Then, Tina earned 2 points as extra credic, now the expression becomes

(y + 4) + 2 = y + 6.

Hence Julia’s score is y and Tina’s score is y + 6.

7 0

3 years ago

Help on functions please.

dedylja [7]

A) Sub g(x) and h(x) into the equation:
x^2 + 3x - 40 - (-x -3)
= x^2 + 3x - 40 +x + 3
= x^2 + 4x - 37
Find x:
x= 4.40 and x= -8.40
b) Sub f(x) and g(x) into the equation:
(x^2 - 64) / (x^2 + 3x -40)
= ((x+8) x (x-8)) / ((x+8) x (x-5))
= (x - 8) / (x-5)
Find x:
x= 8 and x = 5
How to get those number:
(x^2 - 64) = x^2 - 8^2 = (x-8) x (x+8)
( x^2 + 3x - 40) = (x^2 + +8x - 5x - 40) = x( x + 8) - 5( x + 8) = (x-5) x (x+8)

Try to do c and d :)

3 0

4 years ago