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bekas [8.4K]
3 years ago
15

Find the average of the following numbers. -100 and 102.

Mathematics
2 answers:
Nutka1998 [239]3 years ago
8 0

The average is the sum of the numbers divided by the quantity of numbers.

-100 + 102 =2

2/2 = 1

The average is 1

nadezda [96]3 years ago
4 0

Answer:

1

Step-by-step explanation:

To find average, add up all of the numbers and divide it by how many numbers there are.

\frac{-100+102}{2} = \frac{2}{2} =1

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asanjis printing inc. has two types of printing presses: model a and model b. model a can print 80 books per day and model b can
Jet001 [13]

Answer:

model a: 9 presses

model b: 9 presses

Step-by-step explanation:

let x=model a and y=model b.

If asanji has 28 printing presses, we can say that x+y=18.

If he can print 1260 books in a day, we can say that 80x+60y=1260.

Now, We can solve the system of equation by solving an equation in terms of any variable. You can choose any variable. I chose x. x+y=18, So if we subract y from each side, we get x=18-y. Now, we can substitute that in the other equation. Thus, 80(18-y) +60y=1260. If we continue to solve for y, 1440-80y+60y=1260, 1440-20y=1260, subtract 1440 from each side, which gives you -20y=-180, and divide - 20 and you get y=9. Now, substitute the 9 in the x+y=18 to find x. Thus, x+9=18, and x=9. So, Asanji has 9 press of Model A and 9 presses of Model B.

6 0
3 years ago
Unit times for a job exhibit a learning effect. If the second unit took 30 hours, and the fourth unit took 21 hours, roughly how
malfutka [58]

Answer:

The answer is "24 Hours".

Step-by-step explanation:

The calculated time for 2^{nd}unit:

\to T_2 =T_1 \times (2)^{\frac{log(r)}{log(2)}}

        =30 ................(a)

Calculating the time for 4^{th}unit:

T_4=T_1\times (4)^{\frac{log(r)}{log(2)}}

     =21 ..............(b)

On dividing the value from equation (a) to (b):

 r= 0.7

Put the value of r into equation (a)  

T_1=42.8571

Calculating the value of time for 3^{rd} unit:

= 42.8571 \times (3)^{\frac{log(0.7)}{log(2)}} \\\\=24.35 \ Hours\\\\=24

6 0
3 years ago
What is 80 x 40? Make 5 paragraphs stating the answer.
MariettaO [177]
80 x 40 is 320. I know 80 x 40 is 320 because 80 + 80 + 80 + 80 is 320. I also know 80 x 40 is 320 because 8 x 4 is 36. If you pretend the 0 is not there it’s 8 x 4. I know you can get the answer quicker that way because it’s just times tables.
7 0
3 years ago
For a house call, a veterinarian charges $70, plus $40 an hour. Write an equation that represents the total fee y (in dollars) t
Svet_ta [14]
Y=40x+70

hope this helps
6 0
3 years ago
Read 2 more answers
Please anyone help me on this question
vazorg [7]

Answer:

a) 60

b) 0.24

c) 150

Step-by-step explanation:

a) P(green) = ⅕

Expected no. = 300 × ⅕

= 60

b) total = 300

P(purple) = 72/300

= 6/25 = 0.24

c) P(blue) = 45/300

= 3/20 = 0.15

Expected no.: 1000 × 0.15

= 150

5 0
3 years ago
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