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Ber [7]
3 years ago
11

1. Solve: 2a - b = ac + for a

Mathematics
1 answer:
exis [7]3 years ago
4 0
1. a =(ac + b)/2
2. y =6-2x
3. x =(6-y)/3
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Please help !!!!!!!!!
Kaylis [27]

Answer:

9) JK = 24.5

10) LM = 24.5

11) m∡L = 51°

12) m∡M = 129°

Step-by-step explanation:

in a parallelogram, adjacent angles are supplementary (add to 180 degrees) and are also congruent

so, ∡K = ∡M and ∡J = ∡L

since ∡'s L and M are adjacent we can add them and set them equal to 180

5z - 6 + 2z - 3 = 180

7z - 9 = 180

7z = 189

z = 27

therefore, m∡M = 5(27)-6 = 129 and m∡L = 180-129, or 51

Also in a parallelogram, opposite sides are equal; so KJ = LM and KL = JM

7x = 3x + 14

subtract 3x from each side to get:

4x = 14

x = 14/4 = 3.5

to find measure of JK, substitute 3.5 for 'x' to get (3.5)(7) = 24.5

to find measure of LM, substitute 3.5 for 'x' to get (3.5)(3)+14 = 24.5

6 0
2 years ago
PLS HELP MEEEI NEED ANSWERS ASAP ASAP
Brums [2.3K]

Answer:

Associative.

Step-by-step explanation:

In addition and multiplication, it does not matter which two numbers you put together first. On the left aide 6 is associated with 3. On the right side 3 is grouped with 7.  It doesn't matter where 3 goes. You still get the same answer.

(6 + 3) + 7 = 6 + (3 + 7)

   9    +  7   =  6  + 10

        16  =  16

6 0
3 years ago
A toy train makes 10 laps around a track in 12 minutes. hpw me my laps per hour is that.
marusya05 [52]

Answer:

50

Step-by-step explanation:


3 0
3 years ago
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What is the remainder for the synthetic division problem below?
Luden [163]

7 |1 -8 10
X. 7. -7
1 -1 3

A remainder is 3
7 0
2 years ago
-9 irrational or rational
valina [46]

-9 is a rational number.

5 0
3 years ago
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