All categories

2 years ago

What is that product of 2x + y and 5x -y + 3

Mathematics

2 answers:

poizon [28]2 years ago

7 0

Answer:

10x² + 6x + 3xy + 3y - y²

Step-by-step explanation:

Each term in the second factor is multiplied by each term in the first factor, as shown

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

= 2x(5x - y + 3) + y(5x - y + 3) ← distributing

= 10x² - 2xy + 6x + 5xy - y² + 3y ( collect like terms )

= 10x² + 6x + 3xy + 3y - y²

Vlad [161]2 years ago

5 0

The correct answer is:

10 x^2+ 3 xy+ 6 x+ -1 y^2+ 3 y

You might be interested in

An equation is shown 120÷ __ =1.20

devlian [24]

an equation is shown 120÷ __ =1.20

120 / x = 1.2

120/100 = 1.2

check:

1.2* 100 = 120

3 0

3 years ago

Read 2 more answers

Amani computed in a two-way table the relative frequencies of sales of homes listed with two different real estate companies.

Advocard [28]

The answer the third option.

When you look at the data, in the first column, the frequency of sales of both are similar. Even the second column shows similar data. Association is determined if there is a significant difference between the data in each column/row depending on what you are aiming to answer.

In this case, we look at it per column because you want to compare the frequencies of sales of each company which are aligned by columns. So we know to look at the columns and not the rows.

3 0

2 years ago

Read 2 more answers

I think I used everyone can someone explain this to me

nirvana33 [79]

Answer:

Step-by-step explanation:

Terms appear as components of a formula or equation.

Ex. 2n²

So the terms in that equation are:

Hope this helps

7 0

3 years ago

An airplane on autopilot took 5 hours to travel 3,470 kilometers. What is the unit rate for kilometers per hour?

VladimirAG [237]

We can find the unit rate for kph by dividing distance by time.

3470 / 5 = 694

The airplane on autopilot traveled 694kph.

8 0

3 years ago

in 1970, a record 1.5 inches of rain fell in Basse Terre, Guadeloupe in the Caribbean. At this rate, how much rain fell in 3 sec

arsen [322]

In 1970, a record 1.5 inches of rain fell in one minute at Brasse Terre, Guadalupe in the Caribbean. At this rate how much rain fell in 3 seconds or 0.05 of a minute? A 3 inches... B 0.075 inch... C 0.75 inch... D 30 inch. Pick one. Evan chose D as the correct answer. How did he get that answer?

Answer:

$0.075 inches$

Option B is correct.

Step-by-step explanation:

Given.

The rain fall rate is 1.5 inches per minute.

How much rain fall in 3 second or 0.05 of minute?

First we find rain fall rate in one second.

$1.5 inch/min=\frac{1.5}{60} inch/second\\=0.025 inch/second$

So, 0.025 inches of rain fall in one second.

Therefore, the rain fall in 3 second is

$= 3\times 0.025\\=0.075 inches$

The rain fall in 3 second is 0.075 inches.

If you chose option D is correct

If the rain fall is continue to 20 min at the rate of 1.5 inches per min, then the rain fall will be 30 inches.

The rain fall in 3 second is 0.075 inches.

3 0

3 years ago