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3 years ago

Which statement is true about the equations -3x + 4y = 12 and 1/4x-1/3y= 1?

Mathematics

1 answer:

Contact [7]3 years ago

4 0

Answer:

the third selection is corret

Step-by-step explanation:

Ax + by + c = 0, k = - a/b.

so The slope of the first line = $\frac{4}{3}$ ,

the slope of the second line = $\frac{4}{3}$ ;

So these two lines are parallel and they don't intersect

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Can someone help me please

bazaltina [42]

A: 8,250

B: 22

Step-by-step explanation:

A: 15 * 250 = 3,750 + 4,500 = 8,250

B: 10,000 - 4,500 = 5,500/250 = 22. 22 * 250 + 4,500 = 10,000

5 0

3 years ago

Using the graph below,select all the statement that are true.

miv72 [106K]

A i think and i don't know what else

3 0

4 years ago

Read 2 more answers

If f(1) = 2 and f(n+1) = f(n)^2 – 3 then find the value of f(3).

Inga [223]

Answer:

The value of f(3) = -2.

Step-by-step explanation:

First of all, let's find f(2).

$f(n+1)=f(n)^{2}-3$

$f(1+1)=f(1)^{2}-3$

$f(2)=f(1)^{2}-3=2^{2}-3=1$

Now, we can find f(3):

$f(2+1)=f(2)^{2}-3$

$f(3)=f(2)^{2}-3=1^{2}-3=-2$

Therefore, the value of f(3) = -2.

I hope it helps you!

4 0

3 years ago

Will give brainliest to the first person who answers

alexandr402 [8]

Answer:

z =86

Step-by-step explanation:

The exterior angle of a triangle is the sum of the opposite interior angles

z + z-39 = z+47

2z-39 = z+47

Subtract z from each side

z-39 = 47

Add 39 from each side

z = 47+39

z =86

7 0

3 years ago

Read 2 more answers

06. Kristen can run at 15km/hr and walk at 5 km/hr. She completed a 42 km marathon in 4 hours. What distance did Kristen run dur

Mrac [35]

Let x be the time she ran and y be the time she walked

then distance ran = 25x and distance walked = 5y

so 15x + 5y = 42

and x + y = 4

* second equn. by -5:-

-5x - 5y = -20

add this to the first equn:0

10x = 22
x = 2.2

distance she ran = 2.2 * 15 = 33 km

7 0

3 years ago