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2 years ago

9

For the following equations, draw a picture of the tiles on an Equation Mat. Then use “legal” moves to simplify and solve for th

e variable.
a. -2+x = -x+2

b. 2+3x = x+7

1 answer:

Sloan [31]2 years ago

6 0

Answer:

b

Step-by-step explanation:

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Ming writes a number pattern on a slip of paper and hands it to his friend Jack. 24 21 23 20 22 19 21 18 Jack writes the next nu

tiny-mole [99]

The rule is -3, then +2

24-3 = 21
21 + 2 = 23
23-3= 20
20+2= 22
22-3= 19
19+2 = 21
21-3= 18
18+2 = 20

3 0

3 years ago

GarryVolchara [31]

25-5x=5(-x+5)
25-5x=-5x+25
-5x+5x= 25-25
0=0

So the answer will be A: there is no solution

3 0

3 years ago

And are opposite rays. All of the following are true except ______.

Nezavi [6.7K]

There is not enough question to give i an answer

3 0

2 years ago

Read 2 more answers

PLEASE HELP I NEED THIS DONE Chan deposited money into his retirement account that is compounded annually at an interest rate of

rjkz [21]

Answer:

No, equivalent quarterly rate will be approx 1.75%

Step-by-step explanation:

Given that Chan deposited money into his retirement account that is compounded annually at an interest rate of 7%.

We know that there are 4 quarters in 1 year.

So to find that equivalent quarterly we will divide given yearly rate by number of quarters.

That means divide 7% by 4.

which gives 1.75%.

But that is different than Chan's though of 2% quarterly interest.

Hence Chan is wrong.

8 0

2 years ago

Find two numbers, if their sum is −11 and their difference is 41

snow_tiger [21]

The larger one is (-11 + 41)/2 = 15.

The smaller one is (-11 -41)/2 = -26.

_____

For two numbers a and b with sum s and difference d, you can write the equations

$a+b=s\\a-b=d$

Then adding the equations and dividing that sum by 2, you get

$(a+b)+(a-b)=(s)+(d)\\2a=s+d\\a=\dfrac{s+d}{2}$

You can subtract the second eqution from the first and get a similar result for the smaller number

$(a+b)-(a-b)=(s)-(d)\\2b=s-d\\b=\dfrac{s-d}{2}$

These are the formulas we used above.

3 0

3 years ago