35 students would not know any of the three languages, because if 30 know French, 19 knew German, and 16 knew Russian, that must mean that 65 students know at least one of the three languages. So you subtract 65 from 100 and end up with 35

5 0

2 years ago

Read 2 more answers

What is the average rate of change of the amount of the element over the 10-minute experiment? *

Dima020 [189]

Answer:

$-2.7 g/min$

Step-by-step explanation:

Given: a graph

To find: the average rate of change of the amount of the element over the 10-minute experiment

Solution:

A rate of change of one quantity with respect to another quantity is known as rate of change. If y is the dependent variable and x is the independent variable then average rate of change = change in y /change in x.

From the graph,

change in x (time) = $10-0=10$ minutes

change in y ( amount of the element) = $3.22-30=-26.78$ g

So, average rate of change = $\frac{-26.78}{10} =-2.7 g/min$

7 0

2 years ago

Add the following fractions and simplify if needed 2/3 + 1/5 =

masha68 [24]

Answer:

13/15

Step-by-step explanation:

2/3 + 1/5

You first,

Find the L. C. M, i hope u know the full name, if u don't, let me know in the comment section.
the L. C. M is 15
therefore it will be 10+3/15
13/15

5 0

1 year ago

What is the area of the trapezoid shown below? 2 15 12 help fast please!!!

Ugo [173]

Answer:

78 units2

Step-by-step explanation:

The Area of the triangle is 54 units2

The rectangle on the side has an area of 24 units2.

Add them together, and you get 78.

I hope this helps!

pls ❤ and give brainliest pls

7 0

2 years ago

(b) What does the shaded region represents in the given figure?​

(b) What does the shaded region represents in the given figure?