1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
slamgirl [31]
3 years ago
13

Evaluate 2x - y + 4z, if x = 1, y = 2 and z = -1

Mathematics
1 answer:
lidiya [134]3 years ago
5 0

2 x 1 - 2 + 4 x -1 =

the answer is -4.

You might be interested in
Find the value of L. Perimeter = 20. Width is 6. So what is L? On a square
Rashid [163]

Well first of all, that's not a square.  On a square, all 4 sides are
the same, and the length is the same distance as the width.  If the
width of a square is 6, and all four sides are the same, then the
perimeter is (4 x 6) = 24. 

So the shape in your question may be a rectangle, but it's definitely
not a square one.

The perimeter is the distance an ant has to walk if you put him down
on one corner and he walks all the way around the shape until he gets
back to where he started from. 
That's the perimeter.

If you set the ant down on the corner of a rectangle, then he walks the
length, then the width, the the length again, then the width again, and
he's back where he started.

That was 2 lengths and 2 widths ... the perimeter of every rectangle.

Take 2 widths away from the perimeter, and you have 2 lengths left.  OK ?

You said that the width of your rectangle is 6.  Two widths is 12.
Take the 2 widths away from the perimeter, and you're left with (20 - 12) = 8.
But that's 2 lengths !
So the length is half of 8  =  4 .

8 0
3 years ago
Read 2 more answers
5 questions need ASAP!! mwahhh
Over [174]

Answer: 38

50

you will just add

3 0
3 years ago
Please help answer number 4!
solong [7]
The image is black, what’s the question?
4 0
3 years ago
A cardboard box is open at one end and it's shaped like a square prism missing one of its Square bases the volume of the prism i
Andru [333]
A = 9 inches
B = 441 inches squared
3 0
3 years ago
In 4 weeks, Mark earns an average of $400 per
deff fn [24]
4x = 400 —> x = 100 weeks 1-4
400 + 2y = 500
2y = 100
y = 50 weeks 5-6

Last three weeks
Week 4 100
Week 5 50
Week 6 50

He earned about $200
7 0
2 years ago
Other questions:
  • Write an equation of a line whose graph is parallel to the graph of y - 3x-10
    12·1 answer
  • If one side of a right triangle is 12 feet long and the hypotenuse of the triangle is 7, find the length of the other side of th
    14·1 answer
  • What equation allows you to calculate the force acting on an object?
    12·2 answers
  • Milk crates hold 20 bottles of milk . How many gallons in one full crate
    9·1 answer
  • For safety reasons, 3 different alarm systems were installed in the vault containing the safety deposit boxes at a Beverly Hills
    14·1 answer
  • PLS HELP URGENT!! PLEASEE SIMPLE FRACTIONS question in pic
    7·2 answers
  • Which of the following is a reason that Venus is not ideal for supporting life?
    7·1 answer
  • The perimeter of an equilateral triangle is numerically equal to its area. Find the
    12·1 answer
  • PLEASEEE HELPPP I don’t know this
    13·1 answer
  • Can someone help this is due tomorrow and i dont understand it
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!