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slava [35]
3 years ago
15

What is the common difference of the arithmetic sequence -7,-4x,-x,2x,5x

Mathematics
1 answer:
Usimov [2.4K]3 years ago
3 0

Answer:

-7 — -4=-3

so the common diff.

-3.

Step-by-step explanation:

hopr helps

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4(4t=(4x4) blank/ answer blank t answer
larisa [96]

Answer:

the answer is 20

Step-by-step explanation:

The answer is 20. The rule of math, for this math problem, is that you do the multiplication first and then solve. Order of operations is "PEMDAS," which explained is by following these rules: Parentheses First.

8 0
2 years ago
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A box contains 3 coins. One coin has 2 heads and the other two are fair. A coin is chosen at random from the box and flipped. If
Blababa [14]

Answer: Our required probability is \dfrac{1}{2}

Step-by-step explanation:

Since we have given that

Number of coins = 3

Number of coin has 2 heads = 1

Number of fair coins = 2

Probability of getting one of the coin among 3 = \dfrac{1}{3}

So, Probability of getting head from fair coin = \dfrac{1}{2}

Probability of getting head from baised coin = 1

Using "Bayes theorem" we will find the probability that it is the two headed coin is given by

\dfrac{\dfrac{1}{3}\times 1}{\dfrac{1}{3}\times \dfrac{1}{2}+\dfrac{1}{3}\times \dfrac{1}{2}+\dfrac{1}{3}\times 1}\\\\=\dfrac{\dfrac{1}{3}}{\dfrac{1}{6}+\dfrac{1}{6}+\dfrac{1}{3}}\\\\=\dfrac{\dfrac{1}{3}}{\dfrac{2}{3}}\\\\=\dfrac{1}{2}

Hence, our required probability is \dfrac{1}{2}

No, the answer is not \dfrac{1}{3}

5 0
3 years ago
John runs 15 miles in 3 hours. How many miles can John run per hour?
tekilochka [14]
He can run 5 miles per hour
6 0
3 years ago
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10 points + brainless to first correct answer!<br> Total 18 points.
butalik [34]

Answer:

8

Step-by-step explanation:

hope it help toyou

love

6 0
3 years ago
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PLEASE HELP which number line represents the solution to |x-21|&lt;3
9966 [12]

Answer:solutions, search about Complex Numbers

Step-by-step explanation:−2||=−6

−

2

|

x

|

=

−

6

||=−6−2=3

|

x

|

=

−

6

−

2

=

3

The value inside the absolute value brackets could be positive or negative and give a positive result.

()=3

(

x

)

=

3

 OR  −()=3

−

(

x

)

=

3

=3

x

=

3

 OR  =−3

x

=

−

3

On a number line, that would translate to a number line with two dots on it, one at -3 and one at +3.

7 0
3 years ago
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