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Murljashka [212]
4 years ago
8

Subtract and show full process (7a²−3a)−(5a²−5a). ????​

Mathematics
1 answer:
Bess [88]4 years ago
5 0

Answer:

(7a²-3a)-5a²+5a

7a²-3a-5a²+5a

7a²-5a²-3a+5a

2a²+2a

The answer is 2a²+2a

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if 3 is added to twice a number, the result is the difference of 4 times the number the number and 5.
Black_prince [1.1K]
Let, the number = x

Then, 2x + 3 = 4x - 5

2x - 4x = -5 - 3

-2x = -8

x = 8/2

x = 4

In short, the number would be: 4

Hope this helps!
3 0
3 years ago
Read 2 more answers
Solve for x. Thanks!
Vladimir79 [104]

Answer:

x = \frac{2T}{nd} - a

Step-by-step explanation:

Multiply both sides by 2 to eliminate the fraction

2T = n(a + x)d

Since n and d are both multipliers, divide both sides by nd

\frac{2T}{nd} = a + x

Isolate x by subtracting a from both sides, hence

x = \frac{2T}{nd} - a

4 0
3 years ago
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A mother is three times as old as her son, and in 11 years she will be just twice his age. Find their present ages.
brilliants [131]
The mother is 33 years old and the child is 11 because if you divide 33 by 11 you will get 3. Then if you add 11 to both ages you will get 44 for the mother and 22 for the child. Finally you divide 44 by 22 to get 2.
8 0
3 years ago
For the dinner special at a restaurant, the customer must choose an appetizer, an entree, a side dish, and a dessert.
gtnhenbr [62]

Answer:

<u><em>3</em></u> dinner specials are possible to make.  

Step-by-step explanation:

you group <u><em>4</em></u> things up, <u><em>1</em></u> from each <u>category</u> then you have your groups when you can't group <u><em>4</em></u>!

Which results in the answer-<u><em> 3 dinner specials!</em></u>

8 0
2 years ago
A student writes an incorrect step while checking if the sum of the measures of the two remote interior angles of triangle ABC b
sasho [114]

Answer:

Step 1: It should be m∠m + m∠n + m∠o = 180° (sum of angles in a triangle)

Step-by-step explanation:

He made the mistake in Step 1: m∠m + m∠n + m∠p = 180°

It should be m∠m + m∠n + m∠o = 180°

Then only, he can equate it with m∠o + m∠p in step 3.

So,  m∠p is the exterior angle and m∠m and m∠n are the two remote interior angles.

m∠o is the adjacent angle to m∠p. They form a linear pair.

Hence, the correct answer is Step 1.

5 0
4 years ago
Read 2 more answers
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