What is the value of m? 12+(7+m)=30 11 19 25 35 49

2 answers:

6 0

We can do anything to an equation as long as we do it to both sides
remember the associative property of addition

a+(b+c)=(a+b)+c
so
12+(7+m)=(12+7)+m=19+m

19+m=30
minus 19 both sides
19-19+m=30-19
0+m=11
m=11

Marat540 [252]3 years ago

4 0

The answer is 11
hope that helps

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What must the measure of angle LMN be? m∠LMN = °

luda_lava [24]

Both 25x and 22x + 9 have the same answers. So you set those two equal to each other.
$25x = 22x + 9$
Subtract 22x from both sides.
$3x = 9$
and you're left with this.
Next, divide 3 from both sides.
$x = 3$
re-insert 3 into one of the equations.
$25(3) = 75$
add up both angles
$75 + 75 = 150$
all angles (for quadrilaterals)added up equals 360.
$150 + 2x = 360$
solve for x. Subtract 150 from both sides.
$2x = 210$
and divide 2 from both sides
$x = 105$
AngleLMN= 105

3 0

3 years ago

.help me please<br>i accidentally pressed -4 btw<br><br><br>hint: the answer is not 3

ladessa [460]

Answer:

the anser would be 11

Step-by-step explanation:

8 0

3 years ago

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