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AleksAgata [21]
3 years ago
9

Please help will give brainliest.

Mathematics
1 answer:
Viefleur [7K]3 years ago
4 0

Answer:

D

Step-by-step explanation:

a is false since x could be 0.

b is easy to check, just plug numbers in, and we can see that it's false(you would get 0+0=1 and -0-0=-1 once plugged in)

c is also easy to check, just plot the line or simplify the first equation. since (2x+2y)/2=4/2 is also x+y=2, the second equation is also x+y=2, so it must have infinitely many solutions.

d must be true due to process of elimination but let's check to make sure.

7y=14x, divide both sides by 7 to get y=2x and since they're the same equation it must mean that they have infinitly many solutions and we can see that it is correct

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klemol [59]
It depends on the shape it may be rotation
6 0
4 years ago
I need the solution
Vikki [24]

Answer:

=3/4

Step-by-step explanation:

3 (c+d)         2c-2d

-------------- * -------------

(c-d)             8c+8d


Factor the right had term.  The numerator can factor out a 2 and the denominator can factor out an 8.

3 (c+d)         2(c-d)

-------------- * -------------

(c-d)             8(c+d)

We can cancel the (c+d) in the numerator the left and the denominator on the right.  We can cancel the (c-d) in the numerator on the right and the denominator on the left

3                  2

-------------- * -------------

1                   8

We can divide the fraction on the right by 2 on the top and bottom.

3                  1

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1                   4

=3/4

4 0
4 years ago
HELP I WILL GIVE 100 POINTS!!! NO FAKE ANSWERS, PLEASE ANSWER ALL PARTS!!
katrin2010 [14]

option 1 is not linear because it does not change by the same amount every year. It does not have a constant slope.

option 2 increases by 100 per year, constant slope, straight line, linear

-----------------------

a = A y^n

1100 =A y

1210 = Ay^2

1331 = A y^3

---------------

1210/1100 = y = 1.1

check 1331/1210 = y = 1.1 sure enough

1100 = A (1.1)

A = 1000

so

a = 1000 * 1.1^n

and the linear option 2

a = 1000+100n

You can put the numbers in for part C

10% compounded is better than 10% simple :)

5 0
3 years ago
Bill and Greg are walking in opposite directions with speeds of 45 and 75 feet per minute. When they started, the distance betwe
NNADVOKAT [17]
Bill moves at 45 feet per minute and Greg 75 per minute and starts with a constant of 20 feet from them.

Let X be the number of minutes

Bill*Minutes +Greg*Minutes +20 = total distnce between

45x + 75x +20 = d

Plug in 2.5 for both values of x

45(2.5) + 75(2.5) + 20 =d

Multiply values by 2.5

112.5 + 165 + 20 = d

add together 

Distance = 297.5 feet apart




4 0
4 years ago
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Answer:B

Step-by-step explanation:

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3 years ago
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