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
Anit [1.1K]
2 years ago
10

Given a = 4, b = -2 and c = 8, evaluate ab - bc. -24 -4 8

Mathematics
1 answer:
Mrac [35]2 years ago
8 0
(4*-2)-(-2*8)=
-8--16=8
You might be interested in
Which scenario most likely describes an example of plagiarism?
valina [46]

<u>Answer: </u>Taking a Photo of another photo displayed in an art gallery and claiming it as your own

<u>Step-by-step explanation:</u><u>  </u>Because you are claiming something as your own(when it's not) is considered plagiarism and no other situation is considered plagiarism but this one so really the <u><em>process of elimination</em></u> explains the answer to this question

6 0
2 years ago
Pleasee help x.x 1. Solve the system by elimination-
patriot [66]
Q1. The answer is x = 1, y = 1, z = 0

<span>(i) -2x+2y+3z=0
</span><span>(ii) -2x-y+z=-3 
</span>(iii) <span>2x+3y+3z=5
</span><span>_________
Sum up the first and the third equation:
</span>(i) -2x+2y+3z=0
(iii) 2x+3y+3z=5
_________
5y + 6z = 5

Sum up the second and the third equation:
(ii) -2x-y+z=-3 
(iii) 2x+3y+3z=5
_________
2y + 4z = 2


(iv) 5y + 6z = 5
(v) 2y + 4z = 2
________
Divide the fifth equation by 2
(iv) 5y + 6z = 5
(v) y + 2z = 1
________
Multiple the second equation by -3 and sum the equation
(iv) 5y + 6z = 5
(v) -3y - 6z = -3
________
2y = 2
y = 2/2 = 1


y + 2z = 1
1 + 2z = 1
2z = 1 - 1
2z = 0
z = 0


-2x-y+z=-3
-2x - 1 + 0 = -3
-2x = -3 + 1
-2x = -2
x = -2/-2 = 1



Q2. The answer is x = -37, y = -84, z = -35

<span>(i) x-y-z=-8 
(ii) -4x+4y+5z=7 
(iii) 2x+2z=4
______
</span>Divide the third equation by 2 and rewrite z in the term of x:
(iii) x+z=2
z = 2 - x
______
Substitute z from the third equation and express y in the term of x:
<span>x-y-(2-x)=-8 
x - y - 2 + x = 8
2x - y = 10
y = 2x - 10
______
Substitute z from the third equation and y from the first equation into the second equation:
</span><span>-4x + 4y + 5z = 7 
-4x + 4(2x - 10) + 5(2 - x) = 7
-4x + 8x - 40 + 10 - 5x = 7
-x -30 = 7
-x = 30 + 7
x = -37
y = 2x - 10 = 2*(-37) - 10 = -74 - 10 = -84
z = 2 - x = 2 - 37 = -35</span>
8 0
3 years ago
Ahmed was invited at a party at his friend’s place at 20:00 hours. He left the house at 17:00 hours and travelled in his car at
WARRIOR [948]

Answer:

yes he did make it, when he left at 17:00 he had 3:00 hours to make it to the party. if you divide 200/80=2.5 meaning he's able to make it in 2.5 hours.

3 0
2 years ago
Four ounces of oregano and 2 ounces of garlic powder are mixed to create a poultry seasoning. Oregano costs $4 per ounce and gar
AveGali [126]

There isn't an obvious question to this problem but with the given we can assume what is to be asked. I think we are to find the total cost of a certain poultry seasoning. The poultry seasoning would have a total weight of 4+2=6 ounces. The total cost will then have to be 4(4) + 2(3) = 22 dollars. 

4 0
3 years ago
Read 2 more answers
Who is in 6th grade or 7th? <br> cause I swear hrw.com is horrible
LiRa [457]

Answer:

Not me

Step-by-step explanation:

im in high school lol

8 0
2 years ago
Read 2 more answers
Other questions:
  • In the general linear equation, y = bx + a, what is the value of b called?
    13·1 answer
  • A circle with its dimensions in inches (in), is shown what is the area in square inches of half the circle
    6·1 answer
  • when does it make sense to compare the absolute values of numbers rather than the numbers themselves? Please respond
    9·1 answer
  • Find the slope will give brainliest if it is correct.
    12·1 answer
  • The measurement is 4 and 6 what is the perimeter.
    9·2 answers
  • Gimme some relaxation songs​
    6·2 answers
  • Evaluate 13 - 0.75y + 8x when w =12 and x=1/2
    7·1 answer
  • Dose anyone wants to talk
    13·2 answers
  • Find the solution of the system of equations. 10x + 8y = 42. -8x - 8y = -40​
    13·2 answers
  • If M is the midpoint in the figure, find MQ and PQ.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!