Ask question

Ask question

All categories

3 years ago

7

In a certain chemical, the ratio of zinc to copper is 4 to 19. A jar of the chemical contains 760 grams of copper. How many gram

s of zinc does it contain?
1) 760 grams
2) 3,610
3) 30,400
4) 190 or 160 grams

1 answer:

Law Incorporation [45]3 years ago

6 0

160 grams of zinc. 760/ 19 is equal to 40 so then we’d want to multiple 4 x 40 because that’s how much were growing by so then zinc is 160 grams

You might be interested in

Henry was building a tent and had four spikes that he had to pound into the ground. The net of one of the spikes is shown. What

Nikitich [7]

First one is B
and the second is C

8 0

4 years ago

Read 2 more answers

Suppose that x is the probability that a randomly selected person is left handed. The value (1-x) is the probability that the pe

harina [27]

Answer:

The maximum variance is 250.

Step-by-step explanation:

Consider the provided function.

$V(x)=1000x(1-x)$

$V(x)=1000x-1000x^2$

Differentiate the above function as shown:

$V'(x)=1000-2000x$

The double derivative of the provided function is:

$V''(x)=-2000$

To find maximum variance set first derivative equal to 0.

$1000-2000x=0$

$x=\frac{1}{2}$

The double derivative of the function at $x=\frac{1}{2}$ is less than 0.

Therefore, $x=\frac{1}{2}$ is a point of maximum.

Thus the maximum variance is:

$V(x)=1000(\frac{1}{2})-1000{\frac{1}{2}}^2$

$V(x)=250$

Hence, the maximum variance is 250.

4 0

3 years ago

What is the correct classification of 7x2 + 9x + 4? Select one of the options below as your answer:A. monomial B. binomial C. tr

nikitadnepr [17]

The answer is C. Trinomail

7 0

3 years ago

DUE IN 3 mins<br> C-9 at C= 16

bixtya [17]

7.
If c = 16
that means the equation is
16 - 9
which is 7
so 7

8 0

3 years ago

Read 2 more answers

Please Help.(picture below) 30 points

Sveta_85 [38]

Answer = B = 376 degrees - 3x

8 0

3 years ago

Read 2 more answers