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SVEN [57.7K]
3 years ago
9

A line is graphed to show the relationship between the number of words typed and the time Mary spends on a typing test.

Mathematics
2 answers:
Furkat [3]3 years ago
8 0
The answer to your question is : The value of y increases by 40 for each increase of 1 by x .

Things you could of looked out for:
A. is wrong because 40 isn't plotted on the x-value
C and D are wrong because there isn't 140 plotted on either.

Hope this helps you!
Ilya [14]3 years ago
7 0
Thanks for including the graph! 

Okay, so -

From examining the graph, we can see that for every minute the number of words increases by 40. 

Now, since the x axis (the horizontal thingy kabob at the bottom) is time, and the y axis (the vertical thingy kabob) is the number of words - we can conclude that the answer is B! 

Just remember that the value of the y axis is dependent on the value of the x axis. Also, note that x almost always represents time!
You might be interested in
Cam was bom weighing 8.6 pounds. Every day, he gained the same amount of weight. After 30 days, he weighed 14.9
guajiro [1.7K]

Answer:

So I'm not entirely sure about this one, but I believe he gained 0.21 pounds each day for 30 days

Step-by-step explanation:

Since Cam was born weighing 8.6 pounds and after 30 days weighed 14.9, subtract 14.9-8.6 to find how much he gained.

14.9 - 8.6 = 6.3

Now that we know how much he gained, we have to find out how much he gained per day for 30 days. To do this, divide 6.3 by 30

6.3 / 30 = 0.21

To make sure this answer is correct, multiply 0.21 by 30 and add that to 8.6. It should equal 14.9.

I hope this helps!

7 0
3 years ago
Read 2 more answers
phyllis invested 66000 dollars, a portion earning simple interest rate of 5% per year and the rest earning a rate of 7% per year
Lelechka [254]

<u>Answer: </u>

Physliis invested 32000 dollar at 5% interest rate and 34000 dollar at 7% interest rate.

<u>Solution:</u>

Let Phyllis invest ‘x’ dollar at 5% per year and (66000-x) dollar at 7% per year.

We know,

\text { Simple interest }=\frac{\text {Principal} \times r a t e \times T i m e}{100}

In the question it is given that Simple interest earned from both the investments at the end of the year is $3980.

Using the given below equation, we will try to find out the investments at each rate.

\begin{array}{l}{\frac{x \times 5 \times 1}{100}+\frac{(66000-x) \times 7 \times 1}{100}=3980} \\\\ {\frac{5 x}{100}+\frac{462000-7 x}{100}=3980} \\\\ {\frac{5 x+462000-7 x}{100}=3980} \\\\ {-2 \mathrm{x}+462000=3980 \times 100} \\\\ {-2 \mathrm{x}=398000-462000} \\\\ {-2 \mathrm{x}=-64000} \\\\ {\mathrm{x}=\frac{-64000}{-2}}\end{array}

x = 32000

We can calculate amount for 7% interest rate by,

(66000-32000) =34000

Thus Phyllis invested 32000 dollar at 5% interest rate and 34000 dollar at 7% interest rate.

8 0
3 years ago
Does the scatter plot 11
GarryVolchara [31]

Answer: no correlation .C

Step-by-step explanation: there is no correlation if the change on X has no impact on Y

hope this helped

5 0
1 year ago
Can someone help me with this please?
pantera1 [17]

<em>Answer:</em>

<em>D I believe </em>

<em>explanation: 772.malachi on insta</em>

<em></em>

4 0
3 years ago
Constant of proportionality
Furkat [3]

Answer:

2.5

Step-by-step explanation:

given that y is proportional to x then the equation relating them is

y = kx ← k is the constant of proportionality

y = 2.5x is in this form with k = 2.5


7 0
3 years ago
Read 2 more answers
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