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3 years ago

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

Mathematics

1 answer:

Mrac [35]3 years ago

8 0

(4*-2)-(-2*8)=
-8--16=8

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castortr0y [4]

Answer: Slope (m) =ΔY/ΔX=5/2=2.5

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3 years ago

1. John began his job making $25 the first day. After that he was paid $6.75 per hour. a) Use the equation y 6.75x +25 to comple

iren [92.7K]

Answer:

a. Chart (attached)

b. and c. graph attached

Step-by-step explanation:

a. We use the equation given to us and plug in the values of "x" that have been shown to find the corresponding values of y.

So, when x=0, $y=6.75\times 0+25=25$

when x=20, $y=6.75\times 20+25=160$

when x=40, $y=6.75\times 40+25=295$

b. The graph has been shown in a similar manner. All the three points of part a are connected to form the straight line y=6.75x+25. So, we have (0,25), (20,160) and (40, 295)

c. The y axis is the earnings in dollars and the x axis is the number of hours worked.

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3 years ago

PLEASE HELP :) I will give all points

yan [13]

answer choice a

x^2 - 5x - 1 = 0

a=1, b=-5, and c=-1

next you plug in the numbers into the quadratic formula

-(-5) plus or minus the square root of (-5)^2 - 4(1)(-1)/ 2(1)

after you simply, you should get 5 plus or minus the square root of 29, which is answer choice a

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3 years ago

When you graph a system of linear equations why does the intersection of the tow lines represent the solution of the system?

solniwko [45]

Step-by-step explanation:

step 1. when you graph 2 lines they must intersect unless they are parallel (same slope)

step 2. if they intersect then they have one point in common

step 3. that point in common solves both equations

step 4. when a point solves both equations it is called the solution.

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3 years ago

(a) The area of a rectangular parking lot is 3657 m².

aev [14]

Answer l=69m

Step-by-step explanation:

l= A/w= 3657/53=69m

use the formula A=wl

4 0

2 years ago

Read 2 more answers