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Nadusha1986 [10]
3 years ago
8

The number of days to complete research is inversely proportional to the number of researchers who are working . The research ta

kes 125 days to complete if 5 people work on it. Find how many people are needed to complete the research in 25 days .​
Mathematics
1 answer:
horsena [70]3 years ago
7 0

if it takes 5 people 125 days to compete the research then we know that 50 persons will do it in 25 days

so you need <u>50</u> people!!!

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Which graph shows a line with the same y intercept as the graph of 10x - 16y = 40
Amanda [17]

Answer:

The graph option where the y-axis is intercepted at y = -2.5 by the line of the graph.

Step-by-step explanation:

The answer choices for the possible graphs that have the same y-intercept as the graph of 10x - 16y = 40 is missing here.

However, the answer can still be explained here.

We can figure out how the graph would look like.

First, understand that the y-intercept of a graph is the value of y, of the point where the line intercepts the y-axis.

Let's figure out what the y-intercept is given a graph represented by the equation, 10x - 16y = 40.

Rewrite the equation in slope-intercept form.

10x - 16y = 40

-16y = -10x + 40

y = -10x/-16 + 40/-16

y = ⅝x - ⁵/2

Therefore, the y-intercept of the graph of 10x - 16y = 40 is -⁵/2 or -2.5.

✅The graph shows a line with the same y-intercept as the graph of 10x - 16y = 40, would have it's y-axis intercepted at y = -2.5.

4 0
3 years ago
Determine the solution x^2 - 3x -28 ≥ 0
IgorC [24]

x^2 - 3x -28 ≥ 0

factor

(x-7) (x+4) ≥ 0

x=7  x=-4

we have three regions where the answers can lie

x<-4  between -4 and 7  and x>7

pick a point and see if it works

x=-10

(-10-7) (-10+4) ≥ 0

negative * negative  is greater than 0 so this is a solution   x< -4

x=0

(0-7) (+4) ≥ 0

negative * positive  is less than 0 so this is  not a solution  

x=10

(10-7) (10+4) ≥ 0

positive * positive is greater than 0 so this is a solution   x>7

We have two regions that work

x<-4 and x>7




4 0
3 years ago
Read 2 more answers
A car rental company charges $0.10 per mile plus $30 per day for a midsize sedan. If
MaRussiya [10]

Answer:8 days and 12 hours

Step-by-step explanation:30$ is each day

4 0
3 years ago
Read 2 more answers
What is the answer to 3x-33=3
soldi70 [24.7K]

Answer:

12

Step-by-step explanation:

8 0
2 years ago
find the constant m and b in the linear function f(x)=mx+b so that f(6)=9 and the straight line represents by f has slope -4
Charra [1.4K]

Answer:

The constant m=-4, and b=33

Step-by-step explanation:

F(x)= MX+b

If f(6)=9 then x=6, m= -4

9= -4(6) + b

9= -24 + b

b= 9 + 24

b= 33

Therefore the constant m, which is the slope is -4 and b which is the intercept is 33

4 0
3 years ago
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