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3 years ago

Welllllllllllllllllllllllllllllllllllllllllllllllll

Mathematics

1 answer:

VARVARA [1.3K]3 years ago

8 0

Answer:

it izzz what it izzzzz

Step-by-step explanation:

everyone: IT IZZZ WHAT IT IZZZZZ

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Among the eighth-graders in Michael's school, 70% have siblings. The eighth-grade class is 5/6 the size of the seventh-grade cla

trapecia [35]

Answer:

D. 192

Step-by-step explanation:

This problem involves a few steps. First, you need to determine how many eighth graders you have given that 112 represent 70% of the total number of eighth graders. You can solve this using a proportion:

$\frac{70}{100}=\frac{112}{x}$

Cross-multiply and divide: 70x = 11200 or 70x/70 = 11200/70 or x = 160

Since there are 160 total eighth graders and this is $\frac{5}{6}$ of the amount of seventh graders, we can set up an equation to solve for the total amount of seventh graders:

160 = $\frac{5}{6}$ x

Multiply by the reciprocal of your fraction on both sides:

$\frac{6}{5}$ x 160 = $\frac{5}{6}$ x ( $\frac{6}{5}$ )

Solve for x: x = 192 seventh graders

5 0

3 years ago

A survey of 450 seventh grade students revealed that 8

yanalaym [24]

Answer:

Step-by-step explanation:

3 0

3 years ago

A train leaves at 1314 and arrives at 1508. It travelled at an average speed of 105 km/h.

Paraphin [41]

Answer: The train traveled 199.5 km

Step-by-step explanation:

We know the relationship:

Distance = Time*Speed

We know that the speed of the train was 105km/h

And we know that it leaves at 13:14, and arrives at 15:08.

Then the total amount of time that the train was traveling is:

T = (15 hours and 8 mins) - (13 hours and 14 mins)

= (15 - 13) hours and (8 - 14) mins

= 2 hours and (-6) mins.

We know that one hour has 60 minutes, then this is equal to:

T = 1 hour and 54 minutes.

But because the speed is kilometers per hour, we need to rewrite the 54 minutes in hours.

This can be done as follows:

1 hour = 60 minutes.

Then: 54 minutes = (54/60) hours = 0.9 hours.

Then:

1 hour and 54 minutes = 1.9 hours.

Now we know the speed and the time, then the distance can be calculated as:

Distance = speed*time = 105km/h*(1.9 h) = 199.5 km

The train traveled 199.5 km

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3 years ago

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Tomas needs exactly 666 potatoes to make 121212 potato pancakes.

Montano1993 [528]

Answer:

121212 potato pancakes

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3 years ago

In a group of 60 students, 12 students take Algebra I, 18 students take Algebra II, and 8 students take both subjects. How many

vodomira [7]

Since 8 students take both, that leaves only 4 students who take Algebra I alone.
Likewise since 8 students take both, that leaves 10 who only take Algebra 2
So out of the 60, twenty two are taking either Alg I Alg Ii or both.

That leaves 38 people who are not taking either.
b. 38

You can set this up using a 2 circle venn diagram. Just be sure to put the 8 who take both in first.

4 0

3 years ago

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