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Free_Kalibri [48]
3 years ago
6

What is the vaule of the expression x + y + - y When x= -1 and y = 3

Mathematics
2 answers:
mel-nik [20]3 years ago
6 0

Answer:

x + y - y \\  - 1 + 3 - 3 \\  =  - 1

tatuchka [14]3 years ago
6 0

Answer:

-1

Step-by-step explanation:

This is a substitution question

The given equation is x+y+(-y)

And x is said to be-1,y=3

So let's solve

x+y+(-y)

Open the bracket first

x+y-y

So let's substitute

-1+3-3

-1+0

=-1

Therefore the final answer is-1

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The polynomial (x^{2}+5x+6) is a degree of _____​
dolphi86 [110]

Answer:

\displaystyle 2

Step-by-step explanation:

You pick the HIGHEST DEGREE TERM POSSIBLE. A degree of 2 is considered a Quadratic Function.

I am joyous to assist you anytime.

8 0
3 years ago
Abed says he has written a system of two linear equations that has an infinite number of solutions. One of the equations of the
Grace [21]

Answer:

to have an infinite number of solutions, the lines have to be on top of each other.....basically, they have to be the same line.

y = 3x - 1

-3x + y = -1.....multiply by -1

3x - y = 1 <== this would be ur other equation because if u put this in slope intercept form (y = mx + b), it would be the same as y = 3x - 1

Step-by-step explanation:

6 0
3 years ago
Frank bought 6 pens and 3 highlighters in the school store and paid $21 for the whole purchase. His friend, Andy, paid $19 for 2
vovangra [49]

Answer:one pen = $1.50

Step-by-step explanation:

See picture for the math if that helps

Using p for pens, h for highlighter,

A for first equation

B for second equation


I used equation A to reduce to a usable substitute by dividing all by 3

And then isolating “h”.

Now substitute the value of “h” into equation B and solve for “p”

P=$1.50

To check your work, substitute p ($1.50) into equation B and solve for “h”

h=$4.00

Now substitute the p and h values into either equation A or B and solve, they equal the numbers given

5 0
2 years ago
PLEASE HELP! THIS IS DUE IN 1 MINUTE
nikitadnepr [17]

Answer:

5,4

Step-by-step explanation:

hope this helps ^-^

3 0
4 years ago
4) Amir cycled 50 km in 2 hours whereas Samir cycled 100 km in 4 hours. Who cycled
ipn [44]

Answer:

speed=Distance/Time

amir:

50/2=25km/h

Samir:

100/4=25km/h

Both travelled same speed

Step-by-step explanation:

4 0
3 years ago
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