All categories

3 years ago

Please help i am confused

Mathematics

1 answer:

nexus9112 [7]3 years ago

5 0

Answer:

Step-by-step explanation:

If 70% passed both, then that means 30% passed either one test, or neither test.

Since 80% passed the first test, we know that 20% of the students failed the first test.

This means that the other 10% of the students came from the 80% that already passed the first test.

These make up 10/80 = 12.5% of the people that passed the first test, meaning your answer is 100-12.5=87.5%

You might be interested in

Which ordered pair is a solution of the equation 3x + y = 15?

yuradex [85]

Answer: 3(3)+6=15

Step-by-step explanation:

X=3 and the Y=6

( ) means multiplying so it 3 multiplied (3) and add 6 which Is the Y then you got the answer which is 15.

4 0

2 years ago

Need help ASAP<br> The graph shows the taxi fare, y, in a city, for a distance of x kilometers.

Anuta_ua [19.1K]

First, find the slope for the line. Choose any 2 points and note their coordinates. I'll take (0,4) and (2,10) as an example. Then you apply your formula, remembering each coordinate comes in the form of $(x,y)$ .

$\frac{y2-y1}{x2-x1} = \frac{(10)-(4)}{(2)-(0)} = \frac{6}{2} = 3\\$

The slope ( $m$ ) is 3.

In this case, the slope represents the price per kilometer.

So, the fare is $3 per kilometer + the base fare, which is the value already present at 0km. According to the graph, when $x=0$ , $y=4$ .

Let's assume the following:

$p =$ Price per Kilometer, $b =$ Base Fare, $k =$ Amount of Kilometers, $t =$ Total Cost

The total fare would be calculated by the following formula:

$(p*k)+b$

Using the given values:

$p=3,b=4,k=6\\\\t=(3*6)+4\\t=18+4\\t=22$

In conclusion, the total cost for 6km is $22. Option A.

5 0

3 years ago

Can u help me please

kow [346]

Answer:

where's the number?

Step-by-step explanation:

4 0

3 years ago

What is the mean of the data set?

Katarina [22]

Answer:

The answer is 26. Add them all together then divide by the amount of numbers.

Step-by-step explanation:

7 0

3 years ago

Here's a riddle for you guys is it an orange because it taste's like an orange or is it an orange cuz it looks like an orange? a

kozerog [31]

Its an orange bc it is orange

5 0

3 years ago