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arsen [322]
3 years ago
14

The second term of an arithmetic sequence is 7, the sum of the first four terms in the arithmetic sequence is 12, find the first

term and the common difference

Mathematics
1 answer:
Montano1993 [528]3 years ago
3 0
Consider the following short explanation.
Answer: a1=15; d= -8.

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Plz help loves i need
Ratling [72]

Answer:

It's the letter B :)

5 0
3 years ago
Read 2 more answers
Drag the tiles to the boxes to form correct pairs. Find the probability for the given situations, and then match the situations
frozen [14]

Answer:

  • 3 (die)
  • 4 (slips)
  • 6 (spinner)
  • 5 (ace)

Step-by-step explanation:

Josie rolls a six-sided die 18 times. What is the estimated number of times she rolls a two? 3 = (1/6)(18)

Slips of paper are numbered 1 through 10. If one slip is drawn and replaced 40 times, how many times should the slip with number 10 appear? 4 = (1/10)(40)

A spinner consists of 10 equal- sized spaces: 2 red, 3 black, and 5 white. If the spinner is spun 30 times, how many times should it land on a red space? 6 = (2/10)(30)

A card is picked from a standard deck of playing cards 65 times and replaced each time. About how many times would the card drawn be an ace? 5 = (4/52)(65)

_____

The probability of a given event is the number of ways it can occur divided by the number of possibilities. For example, a 2 is one of 6 numbers on a die, so we expect its probability of showing up to be 1/6. The expected number of times it will show up in 18 rolls of the die is (1/6)(18) = 3.

7 0
4 years ago
Finding area of circle with radius , giving brainliest :)) pls help asap
Schach [20]

Answer:

number 2 is the answer or 4*pi inches² or 12.6

Step-by-step explanation:

6 0
3 years ago
Kylie just accepted a job at a new company where she will make an annual salary of
Softa [21]

Answer:

$73,000

$43,000 + $5,000 x t

Step-by-step explanation:

Every year increase $5,000, after 6 years increase $5000 x 6 = $30,000

Her salary will be $43,000 + $30,000 = $73,000

After t years, her salary will be

$43,000 + $5,000 x t

4 0
3 years ago
What is the square root of 24.
Tpy6a [65]

Answer:4.898979486

Step-by-step explanation:

3 0
3 years ago
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