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
liubo4ka [24]
3 years ago
9

Simplify: (5x2 − 9x + 3) + (4x2 + 4x − 12)

Mathematics
2 answers:
dem82 [27]3 years ago
6 0
5x2 - 9x + 3 + 4x2 + 4x - 12
= 9x2 - 5x - 9

hope this helps (all I did was combine like terms)
Irina-Kira [14]3 years ago
3 0
(5x² - 9x + 3) + (4x² + 4x - 12) = 5x² - 9x + 3 + 4x² + 4x - 12 = 9x² -5x - 9
You might be interested in
How do you find the surface area of this prism?
Vlad1618 [11]
Length * width* height
8 0
3 years ago
What is 11/12 minus 3/8
Mrac [35]

Answer: \frac{13}{24}

Step-by-step explanation: 11/12 - 3/8

1. First, we will find a common denomenator. It needs to be the least common factor, or the answer will not be in its simplist form. Let's take a look at the multiples of 12 and 8.

12: 12, 24, 36, 48, 60, 72, 84, 96

8: 8, 16, 24, 32, 40, 48, 56, 64, 72

2. Next, we will choose the smallest common multiple. That would be 24.

3. Now, we will work this out.

11/12 = 22/24

3/8 = 9/24

4. Subtract.

22/24 - 9/24

= 13/24

= \frac{13}{24}

I found the denomenators by multiplying.

Hope this answer helped!

8 0
3 years ago
The areas of two similar triangles are 72dm2 and 50dm2. The sum of their perimeters is 226dm. What is the perimeter of each of t
zloy xaker [14]

Answer:

103=  p small

plarge = 123

Step-by-step explanation:

We know that the the ratio of the areas is the scale factor squared/

Larger triangle over smaller triangle

72

----- = scale factor ^2

50

simplify by dividing by 2 on top and bottom

36

----- = scale factor ^2

25

Take the square root of each side

sqrt(36)

-------------- = sqrt(scale factor ^2)

sqrt(25)

6

-------------- = scale factor

5

The ratio of the perimeters is the scale factor

p large             6

-------------- = ----------------

 p small                5

Using cross products

6 p large = 5 p small

We know the sum is 226

p large + p small = 226

p large = 226 - p small

We have 2 equation and 2 unknowns

6 p large = 5 p small

Substitute for p large

6 (226 - p small) = 5 p small

1356 - 6 p small = 5 p small

Add 6 p small to each side

1356 = 11 p small

divide by 11

1356/11 =  p small

P large = 226-1356/11

p large = 2486/11-1356/11

plarge = 1130/11

The solution requires whole number answers so

1356/11 =  p small

123.27 which rounds to 123

plarge = 1130/11

plarge = 102.7272 = 103

6 0
3 years ago
in a study 44 of adults questioned reported that their health was excellent. a researcher wishes to study the health of people l
dlinn [17]
Where's the question? We have some data...but no question
6 0
3 years ago
What is the slope of the line through (-4.2) and (3,-3)?​
Dennis_Churaev [7]

Finding the slope using the two points:

The formula for slope is

\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

In this case...

y_{2} =-3\\y_{1} =2\\x_{2} =3\\x_{1} =-4

^^^Plug these numbers into the formula for slope...

\frac{-3-2}{3 - (-4)}

\frac{-5}{7}

^^^This is your slope

Hope this helped!

~Just a girl in love with Shawn Mendes

3 0
3 years ago
Read 2 more answers
Other questions:
  • Ten students enter a math contest. In how many ways can 1st, 2nd, and 3rd place trophies be awarded?
    13·1 answer
  • Solving Square Roots Worksheet (x - k)^2 : Part 1
    11·2 answers
  • 7.98 is 1/10 of what number?
    10·1 answer
  • If you run 2 miles in 15 minutes how long will it take to go 40 miles
    14·1 answer
  • Is the graph a linear function, no name and function, or relation (non-functioning)?
    7·1 answer
  • A shape is being designed such that it is a combination of an isosceles triangle with a semicircle whose diameter is the base of
    5·1 answer
  • What is the number name of (i)46,25,689and (ii)658,902,250​
    9·1 answer
  • <img src="https://tex.z-dn.net/?f=95%20%5Cdiv%2013.246" id="TexFormula1" title="95 \div 13.246" alt="95 \div 13.246" align="absm
    15·2 answers
  • Can someone plz help me?
    12·2 answers
  • What is the range of the heights of the girls?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!