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3 years ago

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!

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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]

Answer:

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

Solution:

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]

Answer:

D I believe

explanation: 772.malachi on insta

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