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3 years ago

∆ABC is reflected about the line y = -x to give ∆A'B'C' with vertices

1 answer:

4 0

Since A‘(-1,1) is on the line y=-x, reflecting it about the line doesn't change its coordinate, so A's coordinate is (-1,1). Reflecting B'(-2,1) about y=-x switches both the sign and the number of x and y, so B=(-1,2), and C'(-1,0) becomes C(0,1). Drawing out the graph with the points and the line helps.

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Compute 123x45+246x30+369x15

Arte-miy333 [17]

Answer: 18450

Step-by-step explanation:

7 0

3 years ago

How would I start to solve number 15? Would I use distributive property?

natita [175]

$-5-x=2x-(4x+6)$

Using the distributive property is the correct first step. $(4x+6)$ is being multiplied by -1, so distributing gives

$-5-x=2x+(-4x-6)$
$-5-x=2x+((-4x)+(-6))$

Now, using the associative property of addition, you get

$-5-x=(2x+(-4x))+(-6)$
$-5-x=(2x-4x)-6$

Simplify the right hand side:

$-5-x=-2x-6$

Add 5 and $2x$ to both sides.

$(2x+5)-5-x=(2x+5)-2x-6$

On the left side, use the associative property. On the right, commutativity and associativity:

$2x+(5-5)-x=5+(2x-2x)-6$

Simplify.

$2x-x=-1$
$x=-1$

8 0

3 years ago

Need help with this pls (Show work pls!!)

ICE Princess25 [194]

Answer:

Given below

Step-by-step explanation:

M is Mikey and B is Betty in,

Current ages:

M= x

B= 3x (cuz she is 3 times older)

After 5 years

M= x+5

B= 3x+5 (5 years added to present age)

It says the ages of Betty after 5 years (3x+5) will be twice as much as Mikey (2(X+5))

So,

3x+5 = 2(x+5)

3x+5 = 2x+10

3x -2x = 10-5

x = 5

Therefore,

The current ages are

Betty : 3x = 3*5 = 15

Mikey: 5 (x)

You can verify by checking with the criterias or clues given in the question.. hope this helps..mark as brainiest if this was helpful:)

7 0

3 years ago

Will give brainliest

givi [52]

Answer:

69 and 29

Step-by-step explanation:

if you add 90 by 69 and 29 you will get the answer of 180.

5 0

3 years ago

12 - (-7) I don’t know why but this is making my head spin because it’s not 5

adell [148]

Answer:

19 

Step-by-step explanation:

=> 12 - (-7)

=> 12 + 7

= 19 

3 0

3 years ago

Read 2 more answers