1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
leva [86]
3 years ago
10

What is the product? (5r + 2) (3r -4)

Mathematics
1 answer:
Tanzania [10]3 years ago
7 0

Answer:

15r² - 14x - 8

Step-by-step explanation:

  1. 5x * 3x = 15x²
  2. 5x * -4 = -20x
  3. 2 * 3x = 6x
  4. 2 * -4 = -8

Now add your products,

15x² + -20x + 6x + -8 = 15x² - 14x - 8

You might be interested in
The decimal number 11.8 can be read as "eleven and eight tens."<br><br><br> True or False
Semmy [17]
I mean it could be read that way but that's the way most people read fractions. 11 and 8/10. Most people I know read decimals like that as 11 point 8. So yes I suppose it's true; it's not wrong, but most people don't say it like that. And I don't know how they taught you to read it in your math course.
3 0
3 years ago
Read 2 more answers
40 boys and 16 girl possible ratios ​
Inessa05 [86]

Answer:

40:16, 16:40, 40/16, 16/40

6 0
3 years ago
I need help bruv. For the function y=x^2 - 5x - 6 .
lara [203]

Answer:

a. Vertex = (2.5,-12.25)

b. y-intercept = (0,-6)

c. x-intercept = (6,0) ; (-1,0)

Step-by-step explanation:

a.

Your equation is written as:

y = ax^{2} + bx +c

The easiest way to find the vertex is writing the equation this way:

y = a(x-h)^{2}+k

Being the vertex (h,k)

So first complete the square

y = x^{2} -5x -6 \\y = x^{2} - 2(2.5x) -6 \\y = x^{2} - 2(2.5x) +2.5^{2} - 2.5^{2} -6 \\y = (x^{2} -2(2.5x) + 2.5^{2}) -6.25 - 6 \\y = (x-2.5)^{2} -12.25

Vertex : (2.5,-12.25)

b.

To find the y-intercept you need to replace the equation when x = 0 and get y

y = (0)^{2} - 5(0) -6\\y = - 6

c.

To find the x-intercept you need to replace the equation when y = 0 and get x

0 = x^{2} - 5x -6 \\0 = (x-6)(x+1)\\x = 6\\x = -1

4 0
3 years ago
Given the following scores on a 30-point quiz, what is the frequency of a score of 27?
kiruha [24]

Answer:

2

Step-by-step explanation:

The frequency is how many times the score shows up in the data set

21,<u> 27</u>, 20, 29, 23, 21, 21, <u>27</u>, 26, 25

27 shows up 2 times so the frequency is 2

7 0
3 years ago
Read 2 more answers
A high school sewing club has 11 members. In how many different ways can they choose a president and vice president?
lorasvet [3.4K]
Since the order matters  Person A and B can be chosen as AB (A pres B vice pres) or BA (B president  A Vice president)

When the order matters we are talking about permutations. How many permutations of 11 taken 2 at a time are there.
It can be written like this 11nPr 2
It means start at 11 and multiply by the next lower number 
11 x 10 = 110 ways they can choose.
Extension of the concept:
If there had been three positions President, Vice President, and Treasurer
then it would be 11nPr3  or 11 x 10 x 9
Once again the answer to your problem is 110.
6 0
3 years ago
Read 2 more answers
Other questions:
  • A belt and a pair of pants cost $490 altogether. A bag costs twice as much
    15·1 answer
  • What’s the answers help
    13·2 answers
  • 1 2 3 000 000
    9·1 answer
  • Simplify 6 - 3/4 - 3x)<br> 0-3X-6<br> 9x + 18<br> Ox-6
    8·1 answer
  • Joshua's goal is to sell more than 20 items at a farmers' market. So far, he has sold 6 items. Each of his customers buys 2 item
    5·1 answer
  • 2x + 5y = 3<br> Plz helpppp
    12·2 answers
  • Kiran's father is 65 years old. He is 8 years older than three
    11·2 answers
  • A square pyramid has a height of 9 units and a volume of 147 units3. If a square prism has the same base area and volume as the
    13·1 answer
  • On the grid below, which point is located in the quadrant where the x-coordinate is a positive number and the y-coordinate is a
    7·2 answers
  • Use the drawing tool(s) to form the correct answer on the provided number line.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!