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jeyben [28]
4 years ago
15

Which step should be taken to isolate the variable in the following equation? 7d = 49

Mathematics
1 answer:
tatyana61 [14]4 years ago
7 0

Answer:

You would divide 7d from both side.

Step-by-step explanation:

After you divide the 7d/7d is eliminated  so your answer would be d=7

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Solve the following equation. 6x−15=4x+55 6 x − 15 = 4 x + 55
algol [13]

Answer:

x = 35

Step-by-step explanation:

Solve for x:

6 x - 15 = 4 x + 55

Hint: | Move terms with x to the left hand side.

Subtract 4 x from both sides:

(6 x - 4 x) - 15 = (4 x - 4 x) + 55

Hint: | Combine like terms in 6 x - 4 x.

6 x - 4 x = 2 x:

2 x - 15 = (4 x - 4 x) + 55

Hint: | Look for the difference of two identical terms.

4 x - 4 x = 0:

2 x - 15 = 55

Hint: | Isolate terms with x to the left hand side.

Add 15 to both sides:

2 x + (15 - 15) = 15 + 55

Hint: | Look for the difference of two identical terms.

15 - 15 = 0:

2 x = 55 + 15

Hint: | Evaluate 55 + 15.

55 + 15 = 70:

2 x = 70

Hint: | Divide both sides by a constant to simplify the equation.

Divide both sides of 2 x = 70 by 2:

(2 x)/2 = 70/2

Hint: | Any nonzero number divided by itself is one.

2/2 = 1:

x = 70/2

Hint: | Reduce 70/2 to lowest terms. Start by finding the GCD of 70 and 2.

The gcd of 70 and 2 is 2, so 70/2 = (2×35)/(2×1) = 2/2×35 = 35:

Answer: x = 35

3 0
4 years ago
4 = (4 + 9) = (4 + 4) = 9<br><br> A. True<br><br> B. False
schepotkina [342]
False hope it helps you
5 0
3 years ago
Read 2 more answers
Can I get some help with 1) plz
erik [133]
Your answer is 12 because 8*4=24 and 3*4=12                                                                                                                                                                                                                 Your answer is 12
6 0
4 years ago
Read 2 more answers
Ryan is selling his collection of Nike Air Jordans. He paid a total of $1720 for the 12 sneakers when they were new. When he goe
timofeeve [1]

Answer:

$1035

Step-by-step explanation:

50% of 1720 = 860

the fixed amount for the sneakers is $175

175+860=$1035

7 0
3 years ago
The angle measures of a triangle are 2y+3 degrees 9y-7 and 7y+4 degrees what is the value of y
Roman55 [17]

Answer:

2y+3+9y-7+7y+4=180

2y+9y+7y=180(+7-7)

18y=180

y=180/18

y=10

then

2y+3

2×10+3

20+3

23

9y-7

9×10-7

83

7y+4

7×10+4

74

6 0
3 years ago
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