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kogti [31]
2 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]2 years ago
6 0
She added the polynomials instead of subtracting.
notsponge [240]2 years ago
4 0

Answer:

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

Step-by-step explanation:


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r-ruslan [8.4K]
5d + 2(2 - d) = 3(1 + d) + 1
5d + 2(2) - 2(d) = 3(1) + 3(d) + 1
5d + 4 - 2d = 3 + 3d + 1
5d - 2d + 4 = 3d + 3 + 1
3d + 4 = 3d + 4
<u>-3d       -3d        </u>
       4 = 4
       d = 0

4 0
1 year ago
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How would you shade a model to show ten thousandths?
LUCKY_DIMON [66]
Theres not really a way to show that on here unless i draw you a picture...you must know that 10 thousandths is equal to 1 hundredth. if you draw a 100 by 100 centimeter square on graph paper it will consist of a thousand squares since 100 x 100 is 1000, and if you colored in 10 of those squares, it would be 10 thousandths
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2 years ago
An electrician charges an hourly rate of $50, but also charges a fixed fee for making house calls regardless of time spend on th
NISA [10]

Answer:

C=50t+150

Step-by-step explanation:

From the information given, the equation will need to show that the total cost of the electrician services would be equal to 50 that is the hourly rate for the number of hours spent working plus the fixed fee:

Fixed fee=250-(50*2)=250-100=150

According to this, the equation would be:

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8 0
1 year ago
A rectangular block measures 3 cm x 4 cm x 3 cm how much water would it displace?
nika2105 [10]

Answer:

36c^3m^3x^2

Step-by-step explanation:

  1. you first multiply 3 cm by 4 cm by 3 cm to get 36 cm.
  2. its mass in air and its effective mass when submerged in water (density = 1 gram per cubic centimeter).
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There are 10 red counters and x blue counters in a bag. 2 counters are removed fron the bag. the probability that both counters
frutty [35]

Step-by-step explanation:

10 red 6 blue so 16 altogether.

apologies if I'm wrong

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