All categories

3 years ago

-

Mathematics

1 answer:

ollegr [7]3 years ago

5 0

Answer:

x = 2

y = -3

z = 4

( 2 , -3, 4 )

Step-by-step explanation:

x + y + z = 3 ---- i

x – y =5 ---- ii

y - z = -7 ---- iii

ii + iii

x - z = -2 ---- iv

i + ii

2x + z = 8 --- v

iv + v

3x = 6

x = 2

x=2 substitute for v

z = 4

x =2 substitute for ii

y = -3

You might be interested in

How to make table listing of ordered pairs for f(x)=-5x+1

S_A_V [24]

Make a table with two columns, to find the ordered pair. This is an example.

6 0

3 years ago

Karina needs a total score of at least 627 on three games of bowling to break the league record. Suppose she bowls 222 on her fi

irga5000 [103]

X+y+z≥627
x=222
y=194

222+194+z≥627
if we solved for z then
z≥221

3 0

3 years ago

Ending time 6:30, elapsed time 37 minutes

Nastasia [14]

Answer:

5:53

Step-by-step explanation:

The original time would be 37 minutes before 6:30 so you would subtract 37 minutes from 6;30. So 6:30 minus 30 would be 6 and you would have 7 left over so 6:00 minus 7 minutes would be 5:53

6 0

3 years ago

Can anyone help me with this?

Vika [28.1K]

Answer:

x = 51

Step-by-step explanation:

The figure shown is a pentagon

The angles in a pentagon add up to equal 540

Which means that 77 + 107 + 156 + 149 + x = 540

^ ( note that we just created an equation that we can

use to solve for x )

We then solve for x using that equation

77 + 107 + 156 + 149 + x = 540

step 1 combine like terms

77 + 107 + 156 + 149 = 489

we now have 489 + x = 540

step 2 subtract 489 from each side

489 - 489 cancels out

540 - 489 = 51

we're left with x = 51

3 0

3 years ago

11 mm 5 mm The figure is the net for a rectangular prism. 4 mm 4 mm What is the surface area of the rectangular prism represente

Butoxors [25]

Answer:

348m

Step-by-step explanation:

I took the k12 test

3 0

2 years ago