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3 years ago

Angles a and b are supplementary how would you fix value of x

Mathematics

1 answer:

kotykmax [81]3 years ago

5 0

Answer: 180 = 30 + (x + 60)

Step-by-step explanation: Supplementary means that the angles add together to 180 degrees. This equations shows that angle A (30 degrees) plus angle B (x + 60) equal 180. If you solve the equation you will find that angle B is equal to 150 degrees, and that x = 90.

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6 0

3 years ago

I need help fast thank you so much

valkas [14]

Answer:710

Step-by-step explanation:multiply 3000 by 3.3

3 0

3 years ago

Solve for y. 25 = y2 y = or

masya89 [10]

Answer:

y=5 or y=−5 it does not matter either one

Step-by-step explanation:

25=y2

Step 1: Subtract y^2 from both sides.

25−y2=y2−y2

−y2+25=0

Step 2: Subtract 25 from both sides.

−y2+25−25=0−25

−y2=−25

Step 3: Divide both sides by -1.

−y2

−1

−25

−1

y2=25

Step 4: Take square root.

y=±√25

y=5 or y=−5

8 0

3 years ago

Read 2 more answers

To obtain an estimate of the proportion of "full time" university students who have a part time job in excess of 30 hours per we

musickatia [10]

Answer:

2,436 students

Step-by-step explanation:

At a 90% confidence level, the z-score is 1.645 and the confidence interval is given by:

$x\pm z\frac{s}{\sqrt n}$

Where s is the standard deviation, and n is the sample size.

If they want the length of their confidence interval to be no greater than 0.2, it must be no further than 0.1 from the mean 'X':

$0.1>1.645\frac{3}{\sqrt n}\\\sqrt n>1.645*30\\n>2,435.42$

Rounding up to the next whole number, the sample size should be 2,436 students.

5 0

4 years ago

( First 5 questions. ) Which of the following ordered pairs is a solution of the given system of linear equations?

Mrac [35]

1. (3,-2)

2. (-5,-4)

3. (-20,11)

4. (2,3)

5. (13/7, 40/7)

6 0

3 years ago