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svetlana [45]
3 years ago
12

10 POINTS!!! Help me please.

Mathematics
1 answer:
alexira [117]3 years ago
8 0

Answer:

f(5) = 5^2 - 10*5 + 25 = 0

The ball has been traveling for 5 seconds when it reaches the bottom of the ramp.

The last answer is correct.

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Teresa received a $90 gift card for a coffee store. she used it in buying some coffee that cost her $8.21 per pound. After buyin
SSSSS [86.1K]

Answer:

3 Pounds of Coffee

Step-by-step explanation:

To find out how much she spent on the pounds of coffee, you would have to takeaway $65.37 away from the total of $90 which will give you $24.63, which is how much she has spent on the coffee. To find out how many pounds of coffee she bought, you would have to divide $24.63 by $8.21 giving you 3, which is how many pounds of coffee Teresa bought.

Much appreciated if this is marked as brainliest :)

3 0
3 years ago
Suppose n(X) = 28 and n(Y) = 19.
Flauer [41]
n(X\cup Y)=n(X)+n(Y)-n(X\cap Y)

If X and Y share no common elements, then n(X\cap Y)=0, which means n(X\cup Y)=n(X)+n(Y)=47

On the other hand, if the smaller set is entirely contained within the larger set, i.e. Y\subseteq X, then X\cap Y=Y, and so n(X\cup Y)=n(X)+n(Y)-n(Y)=n(X)=28.
8 0
3 years ago
When we solve the inequality, will we keep or switch the inequality sign?
quester [9]

Answer:

switch I think cuz there is a negative

Step-by-step explanation:

Hope u have a nice day

8 0
3 years ago
Read 2 more answers
Please helppp...
Brut [27]

Answer:

Option A is correct

The linear relationship displayed by the scatter plot is; y=x+10

Step-by-step explanation:

Scatter plot states that a set of points that represent data.

To determine the best equation for a set of points from the given figure.

In general, you can use these steps as follows:

  • First sketch the line that appears to most closely follow the data.

and also try to have the same number of points above and below the line.

  • You can choose two points on the line and estimate their coordinates.
  • Then, find the equation of the line that passes through the two points

To find the equation of linear relationship that displayed by the scatter plot

Using Slope-intercept form:

For any two points (x_1, y_1) and (x_2, y_2) the equation of line is given by:

y-y_1 = m(x-x_1) where m is the slope and it is given by:

m = \frac{y_2-y_1}{x_2-x_1}

From the figure we choose two points on the line:

i.e, (9 , 19) and ( 15 , 25)

Calculate first slope m :

m = \frac{y_2-y_1}{x_2-x_1}= \frac{25-19}{15-9}=\frac{6}{6}=1  

Now, using slope intercept form to find the equation of line;

y-19 = 1 \cdot(x -9)

or

y-19 = x -9

Add both sides 19 we get;

y -19 + 19 = x -9 + 19

Simplify:

y = x+10

Therefore, the function which best expresses the linear relationship displayed by the scatter plot is;  y = x +10


8 0
3 years ago
Read 2 more answers
A seafood restaurant claims an increase of $1,050 over its average profit during a week where it introduced a special of baked c
Licemer1 [7]

Answer:

$2450

Step-by-step explanation:

One week = 7 days

$350 = 1 day

$ 2450 = 7 days(1 week)

350 * 7 = 2450

3 0
2 years ago
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