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3 years ago

I need help in Tuesday night homework I don't understand

Mathematics

2 answers:

klasskru [66]3 years ago

6 0

The bears won 9 games and its 7.7%

Sliva [168]3 years ago

3 0

They won 60% of the games

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Hi, can you please help me answer this direct proportion question?

Oksanka [162]

Answer:

X = 100

Step-by-step explanation:

In proportion questions, they want you to multiply one of the sides by a variable, (i usually represent it with K) and then change the proportion sign to an equal.
This is because proportional means they have a ratio between them, with one side increasing by "k" for each increase in the other side.

Multiply the left by k, so $y = \frac{k}{\sqrt{x} }$
we know that y= 5, for x = 36, so sub this in the equation
$5 = \frac{k}{\sqrt{36} }$
simplify $5 = \frac{k}{6 }$
re-arrange for k, k = 5*6 = 30
now we know k, we can create the real equation, $y = \frac{30}{\sqrt{x} }$
sub in 3 as y
$3 = \frac{30}{\sqrt{x} }$
x = 100

4 0

2 years ago

It took a submarine 30 seconds to sink 225 feet, moving at a constant speed. The captain wants to know the submarine's speed.

Vladimir [108]

Answer:

Speed per second= 7.5 feet per second

Step-by-step explanation:

Giving the following information:

We have a distance (225 feet), and a time (30 seconds). Also, we know that the speed was constant.

All we have to do is divide the distance by the time and determine the speed per second:

Speed per second= distance / time

Speed per second= 225 / 30

Speed per second= 7.5 feet per second

5 0

3 years ago

System of equations Elimination please help i am stuck!!

Anika [276]

-5x = - 7 because -6x plus x is -5x and use elimination to get rid of the -3y so you end up with -5x = -7

7 0

3 years ago

The marked price of an article is 30% above it's selling price and the cost price is 35%less than it's marked price. find the di

SashulF [63]

Answer:

Let C be the cost price of the article. Then:

C(1+30%)=marked price

So:

C(1+30%)=C(1.3)

=1.3C

If the article is then marked down 35%, then its’ price would be:

1.3C(1–35%)=1.3C(.65)

=0.845 or 84.5% of its’ cost

Then:

0.845–1=-0.155

or, a 15.5% loss on the item

8 0

3 years ago

Workout the median of 83,73,76,72,75,86,79,76

Leto [7]

The median is 76

explanation:
The median is the central number of a data set. Arrange data points from smallest to largest and locate the central number. This is the median. If there are 2 numbers in the middle, the median is the average of those 2 numbers.

3 0

3 years ago

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