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Ivenika [448]
3 years ago
6

Describe and correct the error in solving the equation 7 - 3x = 12 4x = 12 x = 3

Mathematics
1 answer:
aev [14]3 years ago
3 0
If x=3
Just replace the X with 3
So seven minus three equals four
If 3 is X than do 4 times 3 which that makes twelve.
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An equation of a line through (11, 12) which is perpendicular to the line y=3x+1 has slope: ____Blank____
Burka [1]

Answer:

the slope is 3 and 1 and the y intercept is 1 and 1

Step-by-step explanation:

5 0
3 years ago
Given an angle, draw the opposite ray of one of its sides to form a linear pair. Find the measure of the angle formed by the ang
Andrej [43]
<span>For 50°, answer is 65° For 90°, answer is 45° For 150°, answer is 15° A linear pair of angles adds up to 180° by definition. So the new angle drawn by the ray will have an angle of 180°-a where a is the measure of the original angle. And the bisector of that new angle will be (180°-a)/2. So with that in mind, let's calculate the new measures of the described construction. 50°: (18° - 50°)/2 = 130°/2 = 65° 90°: (180° - 90°)/2 = 90°/2 = 45° 150°: (180° - 150°)/2 = 30°/2 =15°</span>
4 0
3 years ago
Plz, solve this teacher put this on worksheet help!!
topjm [15]

Answer:

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Consider this population data set:4, 6, 7, 11, 12, 18, 26, 23, 14, 31, 22, and 12. The values 11, 31, 22, and 12 constitute a ra
irga5000 [103]

Answer:

3.5

Step-by-step explanation:

Find the Mean of the Population Data Set

4 + 6 + 7 + 11 + 12 + 18 + 26 + 23 + 14 + 31 + 22 + 12 = 186

186 ÷ 12 = 15.5

Find the Mean of the Sample Data Set

11 + 31 + 22 + 12 = 76

76 ÷ 4 = 19

Subtract

19 - 15.5 = 3.5

Answer: <em>The sample mean is more than the population mean by 3.5</em>

3 0
3 years ago
What is the answer? <br>x+y=15 <br>-2x+5y=-2​
zavuch27 [327]
Multiply the first equation by 2

2x + 2y =30

now we’ll add the second equation to the first equation

2x + 2y =30
-2x+5y= -2

7y=28

divide by 7

y=4

now plug y back into the first equation

x + 4 = 15

subtract 4

x=11
6 0
3 years ago
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