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Mashutka [201]
3 years ago
7

What is the solution to the equation 3×-8=22

Mathematics
2 answers:
White raven [17]3 years ago
7 0

Answer:

x=10

Step-by-step explanation:

3x-8=22

3x-8+8=22+8

3x=30

3x/3=30/3

kykrilka [37]3 years ago
3 0

Answer:

x=10

Step-by-step explanation:

3x−8=22

Step 1: Add 8 to both sides.

3x−8+8=22+8

3x=30

Step 2: Divide both sides by 3.

\frac{3x}{3} = \frac{30}{3}

x=10

Answer:

x=10

Verification:Just substitute the x for 10

3(10)-8=22

Multiply 3 (10)

30-8=22

Substract 30-8

22=22 The solution is correct.

The correct answer is x=10

I hope this help :)

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Write the series using summation notation.<br><br> 4 + 8 + 12 + 16 + 20+ . . . + 80
zhannawk [14.2K]

Answer:

\sum ^{20} _{n \to \11} 4n

Step-by-step explanation:

In order to write the series using the summation notation, first we need to find the nth term of the sequence formed. The sequence generated by the series is an arithmetic sequence as shown;

4, 8, 12, 16, 20...80

The nth term of an arithmetic sequence is expressed as Tn = a +(n-1)d

a is the first term = 4

d is the common difference = 21-8 = 8-4 = 4

n is the number of terms

On substituting, Tn = 4+(n-1)4

Tn = 4+4n-4

Tn = 4n

The nth term of the series is 4n.

Since the last term is 80, L = 4n

80 = 4n

n = 80/4

n = 20

This shows that the total number of terms in the sequence is 20

According to the series given 4 + 8 + 12 + 16 + 20+ . . . + 80 , we are to take the sum of the first 20terms of the sequence. Using summation notation;

4 + 8 + 12 + 16 + 20+ . . . + 80  = \sum ^{20} _{n \to \11} 4n

4 0
3 years ago
Katie said,"Negative numbers are integers."What was her error?
rodikova [14]
Integer means a whole number , a number that is not fraction
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4 0
3 years ago
A house has decreased in value by 27% since it was purchased. If the current value is $146,000, what was the value when it was p
olga nikolaevna [1]

Answer:

27% = 0.27 of 146.000 = 39.420

Add 39.420 at current value (39420+14600 ) = 185.420

7 0
3 years ago
Please please help thank you so much
malfutka [58]
Answer:

Nope

Step-by-step explanation:

y = 6x - 2

(1, 2)

2 = 6(1) - 2

2 = 6 - 2

2 = 4

(1, 2) isn’t on the line
4 0
3 years ago
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Answer:

Sammy needs to pay his mom 5 dollars each time he breaks a rule. His mom will make one exception and only take 2 dollars one time. y represents the total money paid and x is the number of times sammy broke a rule.

4 0
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