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kvasek [131]
3 years ago
14

You have a new mobile phone. The phone costs £140 and then you pay for a one year contract at £15 per month. How much do you pay

at the end of the year. ?
Mathematics
1 answer:
netineya [11]3 years ago
6 0
It is the amount you pay each month times 12
15x12=£180
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Write the equation of the line that passes through the points (7,-6) and (0,2). Put
Alex

Answer:

y+6=\frac{-8}{7} (x-7)

Step-by-step explanation:

To find the slope of the equation use \frac{y_2-y_1}{x_2-x_1}.

So, \frac{-6-2}{7-0} = \frac{-8}{7}. Now we can use our slope and any of the two points to write in point-slope form, which is y-y_1=m(x-x_1). Using the point (7,-6), the formula will give y+6=\frac{-8}{7} (x-7).

To check, you can plug in this equation and the points into a calculator to graph. The line passes through both points.

6 0
3 years ago
From the 12 players who will travel, the coach must select her starting line-up. She will select a player for each of the five p
gizmo_the_mogwai [7]

Answer:

990

Step-by-step explanation:

The center position can be selected in 3 different ways, the other 4 players can be selected in combinations of 11 players (the center is already selected) taken 4 at a time.

By the Fundamental Principle of Counting, there are

3\displaystyle\binom{11}{4}=3*\displaystyle\frac{11!}{4!(11-4)!}=3*\displaystyle\frac{11!}{4!7!}=990

ways for her to select the starting line-up.

7 0
3 years ago
Consider the following confidence interval interpretation: We are 98% confident that the true mean laptop screen size is between
GalinKa [24]

Answer:

Incorrect

Step-by-step explanation:

This interpretation is incorrect because it states that 98% of the data is with in the confidence interval.

or 98% of the laptop have screen size between 19.2 and 21.4 inches

However, the interpretation would have been correct if it would have stated as - Value of the population mean i.e mean size of the laptop screen lies within the confidence interval.

7 0
3 years ago
Kevin has three pieces of wood. Board A is 6 inches long, board B is 11 inches long, and board C is 4 inches long. If the full l
Alik [6]

Answer:

b. no, 6 + 4 < 11

Step-by-step explanation:

To form a triangle, longest length should be less than the sum of the two shorter ones.

4 0
3 years ago
Find the amplitude of y = -4 sin x.
lyudmila [28]
Answer:
4
Explanation:
The amplitude of a sine function is the absolute value of the coefficient of sin(in other words, the absolute value of the number multiplying the sin)
In this case, that is |-4|=4
6 0
2 years ago
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