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Stels [109]
2 years ago
13

To rewrite the expression ab+a+b+1, Jozelle first writes (ab+a) + (b+1). What property justifies this?

Mathematics
1 answer:
rodikova [14]2 years ago
7 0

Answer:

I believe it is associative property of addition or commutative

Step-by-step explanation:

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Please, I really need help-
posledela
<h3>Answer: 48</h3>

=====================================================

Explanation:

Triangle ABC is isosceles because AC = BC.

The angles opposite these congruent sides are angle ABC and angle BAC. These are the base angles.

For any isosceles triangle, the base angles are congruent.

Angle BAC = 69 degrees is given. So angle ABC = 69 as well.

-------------------

The missing angle must add to the two other angles so that all three angles in a triangle add to 180

(angle ABC) + (angle BAC) + (angle BCA) = 180

69 + 69 + (angle BCA) = 180

138 + (angle BCA) = 180

angle BCA = 180-138

angle BCA = 42

-------------------

Angle DCE is congruent to angle BCA because they are vertical angles.

Triangle DCE is a right triangle. The missing angle is 90-(angle BCA) = 90-42 = 48

angle EDC = 48 degrees

6 0
3 years ago
Read 2 more answers
Peter says that 3/4 of a pizza is always the same as 6/8 of a pizza.Nadia says that while they are equivalent fractions, 3/4 and
Aleksandr-060686 [28]
Peter is, 3/4 of 12 which is 9 peices put of 12 is the same as 6/8 which is still 9 peices bc you multiply and I still simplify to 9


5 0
3 years ago
A boat costs $19,200 and decreases in value by 12% per year. How much will the
fomenos
Find 10% of $19,200 = 1,920
Find 2% of $1,920 = 384
12% = $2,304
19,200 - 2,304 = 16,896 (year 1)
Repeat this until you have your 5th year :)
4 0
3 years ago
Carry out the following division.​
kifflom [539]

Answer:

1: 8a²

2: 9a²b²c²

Step-by-step explanation:

1: 48a³ ÷ 6a

48÷6 = 8

8a²

2: 72a³b⁴c⁵ ÷ 8ab²c³

72÷ 8 =9

9a²b²c²

4 0
2 years ago
Read 2 more answers
Help, please what do I need to do ?
GREYUIT [131]
Find the hypotenuse JL.
3.6^2 + 4^2 = 12.96+16=28.96
Square root it. =5.4

There you go. 5.4 is the radius
4 0
3 years ago
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