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
suter [353]
3 years ago
7

8x-y evaluate the expression when x=2 and y=-4

Mathematics
2 answers:
Alex73 [517]3 years ago
4 0

Answer:

20

Step-by-step explanation:

We are given the expression with two variables x and y and are asked to evaluate the expression 8x - y. We can complete this task by putting the values of x and y in that expression.

x = 2

y = -4

8x -y

= 8 (2) - (-4) //two negatives become positive

= 16 + 4 = 20

ankoles [38]3 years ago
4 0

Answer:

Value of expression when x = 2 and y =-4 is 20

Step-by-step explanation:

The given expression be, 8x - y

when x = 2 and y = -4  means that, substituting the value of x and y in the given expression

<u>To find the value of expression</u>

8x - y ------(1)

x = 2 and y = -4

substitute the values of x and y in (1)

8x - y = 8*2 - (-4)

= 16 + 4 = 20

Therefore the value of expression when x= 2 and y = -4 is 20

You might be interested in
382 milliliters equals to how many liters
Ivan
The answer is 0.382 a liter
3 0
2 years ago
Read 2 more answers
Solve for t. (Answer must be completely simplified)<br> 10t=11
AlexFokin [52]

Answer:

T can be equal to 1 1/10 or 1.1 or 11/10

Step-by-step explanation:

10t=11

So divide by 10 on both sides.

t=11/10 which can be simplified to t=1 1/10 or t=1.1

:)

4 0
2 years ago
Which expression is equal to
Andreyy89
Please fix the equation in the second part. Is it + or -.
4 0
2 years ago
Read 2 more answers
What is the square number of 13 27 81 21 43 48 23 39 45
Setler [38]

The given numbers are 13, 27, 81, 21,43, 48,23,39,45.

Square number is that number which is a perfect square means if you multiply a number by itself the number you obtained is a perfect square i.e it's square root is a natural number.

√13=not a natural number

√27=√3×√3×√3=3√3=irrational number

√81=√9×√9=9=a natural number

√21=not a natural number

√43=not a natural number

√48=4√3=not a natural number

√23=not a natural number

√39=not a natural number

√45=3√5=not a natural number

So, out of following numbers 13 27 81 21 43 48 23 39 45→81 is the only square number.

8 0
3 years ago
Read 2 more answers
Expansion of a^4+b^4
amid [387]

Answer:(a+b)^4

Step-by-step explanation:

You first see what they both have in common. In this case it is the the 4 squared. You then take that out and you see what is left. The thing that is left is a+b.

So you put the a+b inside the parentheses and the 4 squared outside.

so your answer will be (a+b)^4.

Hope this helped.

7 0
3 years ago
Other questions:
  • Question: what is the minimum number of colors required to color the map if no two adjacent regions can have the same color?
    9·2 answers
  • Find the nth term of this sequence 2 5 8 11 14 ...
    13·2 answers
  • The moon is approximately 221,000 miles from the Earth. Drag the tiles to represent 221,000 in scientific notation.
    10·1 answer
  • A toy rocket is launched from a platform that is 48 ft high. The rocket height above the ground is modeled by h=-16t^2+32t+48. a
    12·1 answer
  • The regular price of a child's entry ticket to a water park is $8 less than that for an adult's. The park offers half off all en
    12·1 answer
  • PLZ help plz help god bless u and your grades
    8·1 answer
  • Solve for x. 2x = 15 + x x = -15 x = 15 x = -15/2 x = 15/2
    10·1 answer
  • How many toothpicks would be needed for pattern 4
    6·1 answer
  • PLZ HELP! Will GIVE BRAINLIEST
    13·1 answer
  • HELP MEEEE PLEASEEEE, 20 POINTS!!!!
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!