3 years ago

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

Mathematics

2 answers:

Natalija [7]3 years ago

6 0

Answer:

she added 11 plus 10 wrong

Step-by-step explanation:

11 plus 10 = 21

gogolik [260]3 years ago

4 0

Answer: A ) She only used the additive inverse of 10m when combining like terms .

Step-by-step explanation:

Holly only used the additive inverse of 10m when combining like terms. The equality is erroneous because the equation was evaluated well. The calculations should be as follows:

11m -13n + 6mn - 10m + 7n - 3mn = 1m - 6n +3mn

She should have subtracted 13n and 7n then take the negative value. Also, subtract 6mn and 3mn.

You might be interested in

Vanesa earns a base salary of 400

nydimaria [60]

Answer:

Cool

Step-by-step explanation:

7 0

3 years ago

In the angle of elevation from the tip of the shadow to the top of the tree is 32 degrees, what is the height of the tree to the

LenaWriter [7]

Answer:

it might be -40.0

Step-by-step explanation:

i did the worl

3 0

3 years ago

Figure ABCD is a parallelogram.

bogdanovich [222]

A = C (congruent angles)

Then: 4p+12 = 36

Solve for p

4p = 36 - 12

4p = 24

4p/4 = 24/4

p = 6

Answer is going to be A.

6 0

3 years ago

Read 2 more answers

Identify the binomial A. 2x 2 + 3x −1 + y B. x 2 C. x 2 −4x + 2 D. x 2 − 4

Mariulka [41]

D because a binomial means the expression has two: x2 and -4

3 0

3 years ago

The two data sets show random samples of the costs, in dollars, of cars purchased at two dealerships yesterday.

hichkok12 [17]

A) The mean of set 1 is 53,800, while the mean of set 2 is 38,600. The median of set 1 is 42,000, while the median of set 2 is 28,000.
B) The median is a more accurate estimate, because each set has 1 particularly large outlier which heavily skews the mean. In each set, the mean is actually higher than 4 out of the 5 data points, which is not very accurate in describing how much the typical car costs.

7 0

3 years ago