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Zarrin [17]
3 years ago
8

44 - (2c + 3) = 4(c + 5) + c solve the equation

Mathematics
1 answer:
Liula [17]3 years ago
4 0
Equation: 44 - (2c + 3) = 4(c + 5) +c

Step 1: 44 - 2c - 3 = 4(c + 5) + c

When there is a in front of an expression in parentheses, change the sign of each term in the expression

Step 2: 44 - 2c - 3 = 4c + 20 + c

Distribute through the parentheses

Step 3: 41 - 2c = 4c + 20 + c

Subract the numbers

Step 4: 41 - 2c = 5c + 20

Collect the terms

Step 5: 41 - 2c - 5c = 20

Move variable to the left-hand side and change its sign

Step 6: -2c - 5c = 20 - 41

Move constant to the right-hand side and change its sign

Step 7: -7c = 20 - 41

Collect the terms

Step 8: -7c = -21

Calculate the difference

Lastly: Divide both sides of the equation by -7

c=3
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Solve |2x - 5| = 4. {x | x = -4.5 or x = 4.5} {x | x = 0.5 or x = 4.5} {x | 0.5 < x < 4.5}
kotykmax [81]

<u><em>Answer:</em></u>

{x | x = 0.5 or x = 4.5}

<u><em>Explanation:</em></u>

<u>Before we begin, remember that:</u>

The modulus gives the positive value of what's inside it.

<u>This means that:</u>

|a| = |-a| = a

<u>Now, for the given, we have:</u>

|2x-5| = 4

<u>From the above rule, we can deduce that:</u>

<u>either:</u>

2x - 5 = 4

2x = 4 + 5 = 9

x = 4.5 ............> first solution

<u>Or:</u>

2x - 5 = -4

2x = 5-4 = 1

x = 0.5 ..........> second solution

<u>Now, we check:</u>

<u>at x = 4.5</u>: |2(4.5)-5| = |9-5| = |4| = 4 ..........> first solution verified

<u>at x = 0.5</u>: |2(0.5)-5| = |1-5| = |-4| = 4 .........> second solution verified

Hope this helps :)


6 0
3 years ago
Evaluate 5|x^3 - 2| + 7 when x = -2
Dafna1 [17]

Answer:

57

Step-by-step explanation:

5 |-2^3 - 2| + 7

-2^3 = -8

-8 - 2 = -10

absolute value of -10 = 10

5 * 10 = 50

50 + 7 = 57

7 0
2 years ago
Read 2 more answers
1 4th plus 5 8th equals
Finger [1]
These two have different denominators, so you find the least common multiple. This problem goes to be 2/8+5/8, which equals 7/8。
8 0
3 years ago
Please help me out with these questions! Brainliest + 50 Points
11Alexandr11 [23.1K]

Step-by-step explanation:

1) B

2) A

3) C

4) C

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8 0
3 years ago
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Find an equation for the nth term of the arithmetic sequence. -15, -6, 3, 12, ...
Mariulka [41]

Answer: t_{n}=-15+9(n-1)

Step-by-step explanation:

The formula for finding the nth term of an arithmetic sequence is given as:

t_{n}=a+(n-1)d

a = first term = -15

d = common difference = -6 - (-15) = 9

n = number of terms

substituting into the formula , we have :

t_{n} = -15+(n-1)9

t_{n}=-15+9(n-1)

5 0
2 years ago
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