All categories

3 years ago

Brainly sometimes gives us the wrong answers sometimes so what other websites should I use?

Mathematics

2 answers:

Anni [7]3 years ago

6 0

Answer:

quizlet and jishka

Step-by-step explanation:

i looked it up on google

34kurt3 years ago

4 0

Answer:

google

Step-by-step explanation:

google

You might be interested in

What’s 40% of $600 ?

Mandarinka [93]

Answer:

$240

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

18. If (2x-3) is a factor of 2x4 - 3x² + 15x - 15k, find the value of (3k - √5 k).

k0ka [10]

Answer:

Well, here it means that if we set 2x-3 to zero, it becomes x over two dimensions. If we set the question form to zero and set x to two over two

k is obtained 19 to 12, now put this k in what you want

8 0

2 years ago

Solve the system by elimination. − 2 x + 2 y + 3 z = 0 − 2 x − y + z = − 3 2 x + 3 y + 3 z = 5

taurus [48]

Answer:

$x=1, y=1, z=0$

Step-by-step explanation:

we have

$-2x+2y+3z=0$ ----> equation A

$-2x-y+z=-3$ -----> equation B

$2x+3y+3z=5$ ----> equation C

adds equation A and equation C

$-2x+2y+3z=0\\2x+3y+3z=5\\-------\\2y+3y+3z+3z=0+5$

$5y+6z=5$ -----> equation D

adds equation B and equation C

$-2x-y+z=-3\\2x+3y+3z=5\\--------\\-y+3y+z+3z=-3+5$

$2y+4z=2$ -----> equation E

we have the system

$5y+6z=5$ -----> equation D

$2y+4z=2$ -----> equation E

Multiply equation E by -1.5 both sides

$-1.5(2y+4z)=-1.5(2)$

$-3y-6z=-3$ -----> equation F

adds equation D and equation F

$5y+6z=5\\-3y-6z=-3\\---------\\5y-3y=5-3\\2y=2\\y=1$

Find the value of z

substitute the value of y in equation E (or substitute in equation D)

$2(1)+4z=2$

$2+4z=2$

$4z=0$

$z=0$

Find the value of x

substitute the value of y and z in equation A (or equation B or C)

$-2x+2(1)+3(0)=0$

$-2x+2=0$

$-2x=-2$

$x=1$

therefore

The solution of the system of equations is

$x=1, y=1, z=0$

4 0

4 years ago

Which situation can be represented by the expression -27 4/5+50?

Yuliya22 [10]

Answer:

22.2

Step-by-step explanation:

4 0

3 years ago

What is the graph for y = -x² + 10x - 23

skad [1K]

Answer:

the maximum is (5,2)

y-int (0,-23)

3 0

3 years ago