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Svetach [21]
3 years ago
6

The nth term of a sequence is 5n - 2 Work out the 3rd term m

Mathematics
1 answer:
Lemur [1.5K]3 years ago
4 0

Answer:

13

Step-by-step explanation:

a_n = 5n - 2 \\  \\ plug \: n = 3 \\  \\ a_3 = 5 \times 3 - 2 \\  \\  a_3 = 15 - 2 \\  \\  a_3 = 13

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The sum of 5 times one number, x, and 4 times a second number, y, is 75. If the sum of the two numbers is 18, find the two numbe
satela [25.4K]

Answer:x=3 and y=15

Step-by-step explanation:

First, we are told "sum of 5 times one number, x, and 4 times a second number, y, is 75":

5x+4y=75 (1)

Then, we are told "he sum of the two numbers is 18":

x+y=18 (2)

At this point we have our system of equations and now we are able to find the values of x and y.

So, let's begin by isolating x from (2):

x=18-y (3)

Substituting (3) in (1):

5(18-y)+4y=75 (4)

Finding y:

90-5y+4y=75

y=15 (5) This is the value of y

Substituting (5) in (1):

5x+4(15)=75 (6)

Finding y:

5x+60=75 (7)

x=3 (8) This is the value of x

4 0
4 years ago
The price of apples is $5.60 for 4 pounds. write the price as a unit rate.
ankoles [38]
5.60 divided by 4 is 1.40$
The unit is 1.60
5 0
4 years ago
Read 2 more answers
Give a brief general description of the number of degrees of freedom.
Softa [21]

Answer: it is a

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Steven and James are both about to take a math test. Steven is experiencing shortness of breath and profuse sweating in anticipa
Firlakuza [10]

Answer:

james

Step-by-step explanation:

5 0
3 years ago
The following data points represent the number of points scored by each player on the Wildcats basketball team last game. ______
scoundrel [369]

Answer:

4

Step-by-step explanation:

  • If you take the lowest half of the data (from the lower extreme to the median) and find the median of these numbers, that is called the lower quartile or quartile 1.
  • If you take the upper half of the data (from the upper extreme to the median) and find the median of these numbers, that is called the upper quartile or quartile 3.
  • The interquartile range is the difference between quartile 1 and quartile 3.

  • 4, 5, 6, 8, 9, 10, 11, 13
  • Median=8.5
  • Q1=6.5
  • Q3=10.5
  • 10.5-6.5=4

I also added my PowerPoint if you didn't get what I was saying.

Download pptx
7 0
3 years ago
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