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Bogdan [553]
3 years ago
12

The EPA standard for safe drinking water is a maximum of 1.3 milligrams of copper per liter of water. A water testing firm found

8.3 milligrams of copper in a 5-liter sample drawn from Jim and Sharon LeBlanc's
house. Is the water safe or not? By how much does the amount of copper exceed or fall short of the maximum allowed?

Is the water safe for drinking?

No
Yes
Mathematics
1 answer:
AnnyKZ [126]3 years ago
3 0
I think the answer is no
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The m<B for question 1 is 46 degrees, for question 2 the m<Y is one hundred and seventeen degrees.
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I need help with this I’m almost done
amid [387]
All you have to do is look at the graph.
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3 years ago
I need some help on my math test!!, I get to retake it but I need help with some of it:
Greeley [361]

Answer:

B

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = \frac{1}{2}, thus

y = \frac{1}{2} x + c ← is the partial equation

To find c substitute (- 4, - 9) into the partial equation

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7 0
3 years ago
The water level as a river recedes after a flood is measured at regular intervals, and its height relative to normal, in inches,
Tems11 [23]

Answer:

<em>-26</em>

Step-by-step explanation:

Given the sequence:

16, 9, 2, –5, ...,

To find:

7th measurement, if the above sequence continues:

Solution:

Let us examine the given sequence first:

First term is 16

Second term = 9

Third term = 2

Fourth term = -5

Difference between 2nd and 1st term = 9 - 16 = -7

Difference between 3rd and 2nd term = 2 - 9 = -7

Difference between 4th and 3rd term = -5 - 2 = -7

We can see that there is a common difference of -7 between each term.

That means, the sequence is in Arithmetic Progression.

whose first term, a=16

Common difference, d=-7

To find:

7th term i.e. a_7=?

Solution:

Formula for nth term of an Arithmetic Progression is given as:

a_n=a+(n-1)d

Let us put n=7

a_7=16+(7-1)\times (-7)\\\Rightarrow a_7=16+6\times (-7)\\\Rightarrow a_7=16-42\\\Rightarrow \bold{a_7=-26}

7th measurement will be <em>-26.</em>

6 0
3 years ago
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Answer:

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