Select ALL of the expressions that are equivalent to 3(8-4x)

kifflom [539]

Ffujgggggghhhg tug fghhh

7 0

2 years ago

A machine at a manufacturing plant can make 16 of Item A and 20 of Item B per hour. The machine runs 24 hours a day. Yesterday,

Anvisha [2.4K]

Answer:

A) x + y = 24 and 16x + 20y = 434

B) Item A = 11.5 hours per day

Item B = 12.5 hours per day

C) The work done in part A was to derive a system of equations based on the values given to us to produce the items where x and y denoted the number of hours per day it took to make item A and B respectively. Meanwhile, in part B, I employed the substitution method to solve the simultaneous equation derived in part A in order to get the number of hours per day used for each item.

Step-by-step explanation:

A) Let x represent the amount of hours it took to make item A and let y represent the amount of hours it took to make item B.

Thus, since the machine runs 24 hours a day, we have;

x + y = 24 - - - (eq 1)

Since the plant can make 16 of Item A and 20 of Item B per hour and it made 434 items yesterday, we have;

16x + 20y = 434 - - - (eq 2)

B) to find the time taken for each item per day, let's make x the subject in eq 1.

x = 24 - y

Put 24 - y for x in eq 2;

16(24 - y) + 20y = 434

384 - 16y + 20y = 434

4y = 434 - 384

4y = 50

y = 50/4

y = 12.5 hours

Thus, x = 24 - 12.5

x = 11.5 hours

C) The work done in part A was to derive a system of equations based on the values given to us to produce the items where x and y denoted the number of hours per day it took to make item A and B respectively. Meanwhile, in part B, I employed the substitution method to solve the simultaneous equation derived in part A in order to get the number of hours per day used for each item.

7 0

3 years ago

What is this pleAse? Im dumb asfk

erma4kov [3.2K]

Answer: A the mean of plot b is greater than plot a

plot a=7 and plot b= 11

Step-by-step explanation: when solving the mean you're adding all the numbers and then divide the total by the amount of numbers there are so add all the numbers within the lines on the plot

3 0

2 years ago

Last week, an online site received $355.60 for selling 20 cell phone accessories Cell phone cases sell for $10.98 and Airpods se

Fofino [41]

Answer:

i. Cell phone cases

Airpods

ii. x + y = 20 .............. 1

10.98x + 27.98y = 355.60 .............. 2

iii. x = 12, and y = 8

Step-by-step explanation:

Amount of sale = $355.60

Cost of Cell phone cases = $10.98

Cost of Airpods = $27.98

Number of phone accessories sold = 20

1. The variables to be considered in the question are:

i. Cell phone cases

ii. Airpods

2. Let the number of cell phone cases bought be represented by x, and that of airpods be represented by y.

Thus,

x + y = 20 .............. 1

10.98x + 27.98y = 355.60 .............. 2

From equation 1,

x = 20 -y

substitute the value of x in equation 2

10.98(20 - y) + 27.98y = 355.60

219.6 -10.98y + 27.98y = 355.60

17y = 136.60

y = $\frac{136.60}{17}$

y = 8.0353

So that,

x = 20 -y

= 20 - 8.0353

x = 11.9647

Thus,

x = 12, and y = 8

4 0

3 years ago

Help i m not smart at all see alot

wel

Answer:

-3

Step-by-step explanation:

You have to bring -16 to the other side by adding.

It would make it: -7a=21

Then you hve to diving the -7.

-7a/-7=21/-7

That would equal -3

7 0

2 years ago

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