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Montano1993 [528]
3 years ago
14

How could two samples change a conclusion about lead levels in a river?

Mathematics
1 answer:
djverab [1.8K]3 years ago
5 0
One sample could had been taken correctly and another could had took the approach by "wait-and-see"
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The graph shows the function f(x) = 6(3)x. What is the value of the inverse function, f −1, at x = 2?
AnnZ [28]

Answer:

There is an error in the equation.

f ( x ) = 63 X?? or whatt??

4 0
3 years ago
Read 2 more answers
160 prime factors in ascending order
igor_vitrenko [27]

I'd arbitrarily begin by writing the factors 10 and 16.  These, in turn, factor to 2 and 5.  That's all we need to do here to form the product 160, using 5 once and 2 several times:

160 = 5 * 2^5

4 0
4 years ago
Help me please. either one is fine.
mestny [16]
7)
95+(3x+23)+(7x-4)+(9x-6)+90 = (5-2) x 180
x = 18

9)
41+(3x+6)+(7x-11)+62+(4x+7)+(6x-5) = 360
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6 0
3 years ago
A motorboat takes 5 hours to travel 200 miles going upstream. The return trip takes 4 hours going downstream. What is the rate o
dsp73

Answer:

rate of motorboat: b

rate of current: c

So the rate the boat travels upstream is $b - c$, and the rate it travels downstream is $b + c$

Step-by-step explanation:

d = rt

200 = (b - c)\cdot 5

200 = (b + c)\cdot 4

b - c = 40

b + c = 50

Adding these equations, we get:

2b = 90

b = 45

So

c = 50 - 45 = 5

<u>Therefore the rate of the boat is 45kph, and the rate of the current is 5kph</u>

Hope this helps :)

4 0
3 years ago
a father is 27 years older than his son. ten years ago he was twice as old as his son. how old is the father​
Vika [28.1K]

Answer:

44?

Step-by-step explanation:

27-10=17

17+27=44

4 0
3 years ago
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