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3 years ago

14

Simply and solve this equation :4m+9+5m-12=42

2 answers:

elixir [45]3 years ago

8 0

<span>4m+9+5m-12=42
9m - 3 = 42
9m = 45
m = 5</span>

Vedmedyk [2.9K]3 years ago

6 0

4m + 9 + 5m - 12 = 42.

m= 5

Hope this helps! :)

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△ABCis reflected to form △A′B′C′. The vertices of △ABC are A(3, 1), B(1, 5), and C(6, 9). The vertices of △A′B′C′ are A′(−1,

Blababa [14]

Answer: D) reflection across y = -x

Explanation:

When we reflect over y = x, we basically swap x and y. So for instance, the point (3,1) becomes (1,3).

When reflecting over y = -x, we will do the same thing but we'll make each coordinate swap in sign from positive to negative (or vice versa). The rule for reflecting over y = -x is $(x,y) \to (-y,-x)$

So if we apply that rule to point A(3,1) then it becomes A ' (-1, -3).

Similarly, B(1,5) moves to B ' (-5, -1)

Finally, C(6,9) becomes C ' (-9, -6)

5 0

2 years ago

Can someone help me with this please? I will mark you brainliest

lina2011 [118]

Answer:

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Step-by-step explanation:

6 0

3 years ago

What numbers multiply to 6 and add up to 9

Nookie1986 [14]

Xy = 6
x + y = 9

x + y = 9
x - x + y = -x + 9
y = -x + 9

  xy = 6
  x(-x + 9) = 6
  x(-x) + x(9) = 6
-x² + 9x = 6
  -x² + 9x - 6 = 0
-1(x²) - 1(-9x) - 1(6) = 0
-1(x² - 9x + 6) = 0
-1 -1
x² - 9x + 6 = 0
x = -(-9) ± √((-9)² - 4(1)(6))
2(1)
x = 9 ± √(81 - 24)
2
x = 9 ± √(57)
2
x = 4.5 ± 0.5√(57)

x + y = 9
4.5 ± 0.5√(57) + y = 9
- (4.5 ± 0.5√(57)) - (4.5 ± 0.5√(57))
y = 4.5 ± 0.5√(57)
(x, y) = (4.5 ± 0.5√(57), 4.5 ± 0.5√(57))

The two numbers that multiply to 6 and add up to 9 are 4.5 ± 0.5√(57).

6 0

3 years ago

What are the slope and y intercept of the line 4y= -x - 32

Alona [7]

First you'll have to bring the equation in form y = mx + b.

4y = -x - 32
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So the slope is -1/4 and y-intercept is -8

Hope this helps :)

7 0

3 years ago

Read 2 more answers

Share 60 in the ratio 5 7

nignag [31]

If the ratio is 5:7 then the each part has a value of:

60/(5+7)=5 so from a total of 60

5:7 becomes 5*5:7*5 which is:

25:35

7 0

3 years ago