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
kogti [31]
3 years ago
9

Holly finds that (11m – 13n + 6mn) – (10m – 7n + 3mn) = m – 20n + 9mn. What error did Holly make?

Mathematics
2 answers:
jekas [21]3 years ago
6 0
She added the polynomials instead of subtracting.
notsponge [240]3 years ago
4 0

Answer:

A.)she only used the additive inverse of 10m when combining like te

Step-by-step explanation:


You might be interested in
PLZ HELP ASAP! IM FAILING SO PLEASEEEE
UkoKoshka [18]

Answer: B

You can find slope by using the slope formula. Because we are already given two coordinate points, we can use that to find our slope. The slope formula is \frac{y^{2}-y^{1}  }{x^{2}-x^{1} }. This also refers to \frac{5-(-5)}{0-4} or 10/-4 or -5/2. Any coordinate with the x-value as 0 means that that coordinate is the y-intercept. Because (0,5) has 0 as its x-value, the y-intercept is 5.

3 0
3 years ago
In one year the perseid metor shower had a metor appear every 1/5 5 minutes on average That same year the Leonid metor shower ha
olga55 [171]

In one year, the Perseid meteor shower had a meteor appear every 1 1/5 minutes on average. That same year, the Leonid meteor shower had a meteor appear every 4 2/3 minutes on average. How many more meteors fell during the Perseid meteor shower?

Answer:

325,452 meteors

Step-by-step explanation:

We all know that :

We have 365 days in a year and in each day there are 24 hours, Likewise an hour has 60 minutes

SO, the total number of minutes in a year is :

365 × 24 × 60 = 525600 minutes

For Perseid  meteor:

1 + \frac{1}{5}  \\ \\ = 1 + 0.2 \\  \\ = 1.2

So one meteor fall at 1.2 minutes interval Thus, in a year, we will have :

1 meteor - 1.2 minutes.

x meteor - 525600 minutes.

1.2x = 525600

x = \frac{525600}{1.2}

x = 438000

∴  438,000 meteors fell during the Perseid shower.

For  Leonid meteor shower:

4 + \frac{2}{3} = 4.67

So one meteor fall at 4.67 minutes interval Thus, in a year, we will have :

1 meteor - 4.67 minutes.

x meteors - 525600 minutes.

4.67x = 525600

x = \frac{525600}{4.67}

x = 112548

112,548 meteors fell during the Leonid Shower.

Finally , the numbers of more meteors that  fell during the Perseid meteor shower is calculated by the difference in the number of Perseid meteor shower and Lenoid meteor shower. i.e

438,000 - 112,548 = 325,452

325,452 more meteors fell during the Perseid meteor shower

5 0
3 years ago
If A is 35% of B, then B:A is 65:35... True or False
mixer [17]
False it is not it just said that if B is 100 then A is 35
8 0
3 years ago
Read 2 more answers
Help with math please
natulia [17]

Answer: The answer is B

Step-by-step explanation: Because x=6 and y=6 = 12

..y equal twice the times we have right now..... and there is a lot of solutions to equal 12...

4 0
3 years ago
712.9 Divided by what equals 71.29
soldi70 [24.7K]

Answer:

10

Step-by-step explanation:

712.9 / 10 = 71.29

3 0
3 years ago
Read 2 more answers
Other questions:
  • A plumbing contractor bid the​ rough-in work for a new​ three-story office building based an estimate of 850 hours of a​ journey
    9·1 answer
  • What is the solution for the equation 4x − 10 = 2x
    7·2 answers
  • Are the expressions below equivalent 3(4x+8) 12x+24
    9·2 answers
  • The equation y=1/9x relates proportional quantities x and y.
    12·1 answer
  • (6 + 4(-12) =<br> i need help on this one too..
    8·1 answer
  • Each face of a number cube is a square with a side length of 16 millimeters. What is the total area of all of the faces of the n
    13·1 answer
  • Please helppp mee!!!<br> explain how you know!
    5·2 answers
  • !!!!!!!!!!!!!!!!!!!
    10·1 answer
  • PLZZZ help with this its pretty simple!
    11·2 answers
  • Can someone please do this for me?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!