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3 years ago

Please help! Question Below!!

Mathematics

1 answer:

JulijaS [17]3 years ago

7 0

1. it is not a function because the input 4 is going to two outputs.
2. it is a function because each x value is assigned to one y value.
3. it is not a function because the input 1,4 is shown two times.
4. it is a function because each x value is assigned to one y value.
5. and 6. they are both functions because each x value is assigned to one y value.
7. it is not a function because when doing the vertical line test, some lines are overlapping each other.
8. it is a function because when doing the vertical line test, no lines are overlapping each other.

If any of my answers are wrong, plz tell me and I will try and correct my mistake. Hope this helps!!

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If x varies inversely as p and x=2 when p=4 find the formula connecting them

Doss [256]

Answer:

x = $\frac{p}{2}$

Step-by-step explanation:

x ∝ p

x = kp -------(1)

Where k is the constant of proportionality.

Now, x = 2 when p = 4

Putting in the above formula

2 = k(4)

Dividing both sides by 4

k = $\frac{2}{4}$

=> k = $\frac{1}{2}$

Putting k in (1)

x = $\frac{p}{2}$

Now this is the required equation connecting both.

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3 years ago

Please helpppppppp meee

Alexeev081 [22]

Answer: 192 cm^2

Step-by-step explanation:

With parallelograms like this, you an just multiply the width and length to find the area. If you cut the shape up in a certain way, it would make a rectangle, so the formula length*width=area would also apply to parallelograms.

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4 years ago

What is (4/9-7/15) divided by 13/10

Rufina [12.5K]

First find least common denominator to subtract.
9=(3)×3
15=(3)×5
3×3×5=45 is lcd
4/9=20/45
7/15=21/45
(20/45-21/45)=(20-21)/45=-1/45
-1/45÷13/10
multiply by reciprocal instead of dividing
-1/45×10/13=(1×10)/(45×13)

-10/585

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3 years ago

Albert is traveling 40 mph in his car. After 3 hours, how far will he have traveled?

STALIN [3.7K]

Answer:

120 miles

Step-by-step explanation:

Albert travels 40 miles for each hour he drives (units = mph = miles per hour)

If he drives 3 hours at 40 miles per hour...

3 hours x 40 miles / hour = 120 miles

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2 years ago

Explain in your own words how you would graph the equation y = -4x + 25

madam [21]

Answer:

See below

Step-by-step explanation:

First, I would choose three different points with some distance between. Let's do x = -5, x = 0, and x = 5. Next, I would plug those numbers into the equation, like so:

$y = -4(-5) + 25 = 20 + 25 = 45$

$y = -4(0) = 25 = 25$

$y = -4(5) + 25 = -20 = 25 = 5$

Next, I would plot the points [(-5, 45), (0, 25), (5, 5)] on an x-y graph. Finally, I would take a ruler, line it up with the three points, and draw a line through those three points, extending from one side of the graph to the other to show the equation is continuous.

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4 years ago