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ANEK [815]
4 years ago
8

Help me please,Thanks

Mathematics
1 answer:
Natasha2012 [34]4 years ago
7 0
Answer choice A 
8 x 2.54=20.32
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The sum of three numbers is 98 . The first number is 7 less than the second. The third number is 3 times the second. What are th
loris [4]

Answer:

14, 21, and 63

Step-by-step explanation:

we can set the three unknown numbers as x, y, and z

so

x + y + z =98

now we are given that the first (x)  is seven less than the second (y)

x = y - 7

the third number (z) is three times the second (y)

z = 3y

since we have an equation for z and x in terms of y, we can plug it into the first equation and solve for y.

(y-7) + y + (3y) =98

y - 7 + y + 3y =98

y + y + 3y =105

5y = 105

y=21

now that we know y, we can plug its value into either the second or the third equation to find x or z (I chose to find z first)

z = 3y

z = 3(21)

z = 63

now we can plug in y to find x

x = y - 7

x = 21 - 7

x = 14

so the three numbers should be 14, 21, and 63

7 0
4 years ago
A baker determined the annual profit in dollars from selling pies using p(n)= 52n-0.05n where n is the number of pies sold.What
marusya05 [52]
P(400) = 52(400)-0.05(400)
= $20780
4 0
4 years ago
Pt.2 of my other question
sveta [45]

Answer:

x = 5, supplementary

Step-by-step explanation:

6x + 13 + 14x - 33 = 180

20x - 20 = 80

20x = 100

x = 5

4 0
3 years ago
there are 100 officials at the race. you read that the total cost of all the officials for one day is 20 654. how much does each
DaniilM [7]

Answer:

$206.54

Step-by-step explanation:


Divide the number of officials by the total days pay to get the pay for each official working the race

3 0
3 years ago
Exponential functions increase rapidly how would you describe the behavior of an inverse function to that
Nady [450]

The exponential functions have the form f(x) = bˣ where b> 0 and b≠0.

Step-by-step explanation:

Exponential function is given in the form of f(x)= bˣ

When working with the inverse of a function, the inputs (x) and outputs(y) exchange their places and the inverse will be the reflection over the identity line y= x

The example of exponential function is the growth of bacteria. If you start with 1 bacterium and it doubles every hour, you will have 2x bacteria after x hours and it is written as f(x) = 2x.  

The exponential function will be bigger than the polynomial and it always have the positive number other than 1 as the base.

The instantaneous rate of change of a quantity with respect to time is proportional to the quantity by itself.

5 0
3 years ago
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