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leva [86]
4 years ago
5

when given an algebraic expression involving subtraction, why is it best to rewrite the expression using addition before identif

ying he terms.
Mathematics
1 answer:
Morgarella [4.7K]4 years ago
4 0
No. you shouldn't change it to addition because that would manke it much more confusing after
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Dominic ordered 210 pens. He divided them equally among his 10 friends. One of his friends, Benjamin, already had 27 pens. Then,
photoshop1234 [79]

Answer:

35

Step-by-step explanation:

210/10=21 pens per friend

21+27=48 pens for benjamin

48-13=35 pens left

benjamin has 35 pens now

7 0
3 years ago
twice the difference of a number and 7 is equal to three times the sum of the number and 7. find the number​
otez555 [7]

Answer:

- 35  

Step-by-step explanation:

2(x - 7) = 3(x+7)

2x - 14 = 3x + 21

- 21 - 14 = 3x - 2x

x = - 35  

Rechecking :

2(-35 - 7) = 3 (-35 +7)

- 84 = - 84

I hope im right!!!

7 0
3 years ago
In parallelogram HIJK, the measurement of angle H is 45 degrees, find the measure of angle K
user100 [1]

Answer:

< K = 135

Step-by-step explanation:

< K = 180 - < H

= 180 - 45 = 135

5 0
3 years ago
Based on the areas of the squares determine whether the triangle shown is a right triangle
Stella [2.4K]

Answer:

The answer is "triangle ABC is not a right triangle".

Step-by-step explanation:

For a right-angle triangle:

Its square upon on longest or triangular edges is equivalent to the total of the other two squares

Its parameters indicated throughout the question are;

Square of lateral length A = 7 \ inch^2

The square of lateral length B = 18 \ inch^2

The square of lateral length C=27\  inch^2

Thus, the longest side is C, as well as the size inch^2 of the squares of its two sides, is7 + 18 = 25 \ inch^2, lower than square C = 27\ inch^2, hence, the ABC triangle is not correct. Its longest edge is consequently C.

5 0
3 years ago
Find the marked angles . Some construction may be necessary​
Tpy6a [65]

Step-by-step explanation:

126 / 2 = 63 because the circular angle is 1/2 of the center angle

7 0
3 years ago
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