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andreev551 [17]
2 years ago
15

Can someone plz help me if u can’t see zoom in plz help me

Mathematics
2 answers:
kvv77 [185]2 years ago
8 0

Answer:

City 1 and City 2

Step-by-step explanation:

The water is moving down stream, moving from City 1-2-3-4 in that order.

if water was taken a the X mark, the pollutants would have to have come from the cities above where the sample was taken.

Hope this helps!

Aleksandr [31]2 years ago
7 0

Answer:

City 1 and 2.

Step-by-step explanation:

To be completely honest I have never done a problem like this before but I am fairly confident with my answer. As it can't be city 3 or 4 as they are after the polluted water sample was taken and the river is flowing down. The only two options it could be is city 1 and 2.

I hope this helps!

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(50 POINTS) Write out each sum.
valentina_108 [34]

Step-by-step explanation:

12. n^2+2n

if you insert 1 for k and then work up by inserting 2 for k and adding those together and stoping at n.

13. 8-2(2^n)

if you insert 3 for k and then work up by inserting 4 for k and adding those together and keep on going but stopping at n.

Hope that helps :)

4 0
2 years ago
a jar contains nickels and pennies. there are 56 coins in the jar in all. the total value of the coins is 1.52. how many pennies
nevsk [136]
1 penny is just 1c
one nickel is 5 pennies or 5c

alrite...

p = amount of pennies in the jar
n = amount of nickels in the jar

we know there are 56 coins in the jar, thus whatever "p" and "n" are,

p + n = 56

we also know, the total value of all pennies and nickels is one buck and 52 cents, or 1.52.. that's 152 pennies.

now, we know there are 5 pennies in one nickel, so in "n" nickels, there are 5*n pennies, or 5n, thus

p + 5n = 152

\bf \begin{cases}
p+n=56\implies \boxed{n}=56-p\\
p+5n=152\\
----------\\
p+5\left( \boxed{56-p} \right)=152
\end{cases}

solve for "p", to see how many penny coins are there.

what about the nickels? well, n = 56 - p.
5 0
3 years ago
I want to know the simple way to add fractions like I have a problem with getting the answer to 1/6+1/8=
Jobisdone [24]
You find the lowest common denominator of both fractions, which in this case is 24.
1/6 is equivalent to 4/24 and 1/8 is equivalent to 3/24. 
4/24 + 3/24 = 7/24
4 0
2 years ago
Read 2 more answers
Find the quotient. Simplify your answer.<br> 7y/6 divides by z/-2
HACTEHA [7]

Answer:

-7y/3z

Step-by-step explanation:

When dividing fractions, we flip the second one so that we can multiply the 2 fractions. When we do this, we get 7y/6 * -2/z. When we multiply the numerators and denominators, we get -14y/6z. Simplifying (dividing the numerator and denominator by 2), we get -7y/3z.

7 0
2 years ago
A residual plot has data points that are all very close to the x-axis. What does this say about the data?
Afina-wow [57]

Answer:

B

Step-by-step explanation:

because, the closer the data points are to the x axis on a residual plot with no definite shape means that a linear model is appropriate for this data set

3 0
2 years ago
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