All categories

2 years ago

I need help answering. Thanks.

Mathematics

2 answers:

Viefleur [7K]2 years ago

8 0

Answer:

Step-by-step explanation:

C or B's so 30% + 40% = 70% so:

70/100 multiplied by 40 because 40 students

7/10 times 40 = 28

snow_tiger [21]2 years ago

3 0

The correct answer is 28

You might be interested in

If 120 marks is 60% what is full marks

ivanzaharov [21]

Percentage is a value by a fraction of 100.
120 marks is equivalent to 60%
this means from the whole amount, 60 % of the whole amount is 120 marks
we need to find the full marks
if 60 % --- 120
then 1 % --- $\frac{120}{60}$
full marks are 100 %
therefore 100 % - $\frac{120}{60} * 100$
100 % --- 200 marks
full marks are 200 marks

7 0

3 years ago

Read 2 more answers

The answer I got for this problem was 10.8 (multiplied 18 and 60 then divided by 100) however, it stated that my answer is incor

Delicious77 [7]

9514 1404 393

Answer:

30 mL

Step-by-step explanation:

The meaning of 60% solution is ...

alcohol/(total volume) = 0.60

You are told the amount of alcohol is 18 mL, so you have ...

(18 mL)/(total volume) = 0.60

Multiplying by total volume gives ...

18 mL = 0.60 × (total volume)

Then dividing by 0.60, you have ...

(18 mL)/0.60 = total volume = 30 mL

_____

<em>Additional comment</em>

You need to apply what you know about the real world to consider whether your answer makes any sense. If alcohol is a little more than half of the volume, and the amount of alcohol is 18 mL, then the total volume cannot be less than 18 mL. In fact, you expect it to be not quite double 18 mL.

An answer of 10.8 mL makes no sense in this context. You cannot have less total solution than you have of something that makes up a part of the total solution.

7 0

3 years ago

Please help me with this I attached the pictures!

german

For number one. Go to may then up to 55. Crawl before you walk. Just plot the points on the graph and make sure the line goes through 0,0

8 0

3 years ago

Identify the relationship (complementary, linear pair/supplementary, or vertical) and find the measure of angle b in the image b

iren2701 [21]

Answer:

complementary

b = 45 deg

Step-by-step explanation:

Angles b and 45-deg are complementary since their measures ad to 90 deg.

45 + b = 90

b = 45

6 0

3 years ago

Read 2 more answers

When ordering the Kids' Lunch at Burger Universe, the customer must choose a size, whether or not to have cheese, a type of bun,

AlekseyPX

Answer:

192 Kids' Lunches are possible.

Step-by-step explanation:

The client must make 5 decisions:

1) Size (junior, small, medium, large)

2) Cheese (with or without)

3) Type of bun (white, wheat)

4) Side order (fries, onion rings, fruit cup)

5) Drink (orange, grape, cherry, lemonade)

Since the client must make all 5 decisions all the time, we will multiply the number of options we have:

1) For size, he has 4 options,

2) For cheese, he has 2 options,

3) For type of bun, 2 options,

4) For side order, 3 options,

5) For drink, 4 options.

Therefore, the number of total options he has is 4 x 2 x 2 x 3 x 4 = 192 Kids' Lunches.

6 0

3 years ago