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3 years ago

PLEASE HELP!! Question is below

Mathematics

2 answers:

maria [59]3 years ago

8 0

Answer:

Step-by-step explanation:

Complementary means that the angles have a sum of 90° so we can write:

m∠A + m∠B = 90° → 3x + 2 + 8x = 90

11x + 2 = 90

11x = 88

x = 8 which means that m∠B = 8x = 8 * 8 = 64°.

Supplementary means that the angles have a sum of 180° so m∠C = 180° - m∠B = 180° - 64° = 116°.

Ksivusya [100]3 years ago

5 0

Answer:

Step-by-step explanation:

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The manager of The Cheesecake Factory in Boston reports that on six randomly selected weekdays, the number of customers served w

Oliga [24]

Answer:

(121.576 ; 273.424)

Step-by-step explanation:

Given the data:

175, 125, 180, 220, 240, 245

We can calculate the mean and standard deviation

Mean = Σx/ n = 1185 / 6 = 197.5

Standard deviation = 46.125 (calculator)

The confidence interval :

Mean ± margin of error

Margin of Error = Tcritical * s/sqrt(n)

Tcritical at 99%, df = n - 1 ; 6 - 1 = 5

Tcritical = 4.032

Margin of Error = 4.032 * 46.125/√6

Margin of error = 75.924

Confidence interval :

197.5 ± 75.924

Lower boundary = 197.5 - 75.924 = 121.576

Upper boundary = 197.5 + 75.924 = 273.424

(121.576 ; 273.424)

5 0

3 years ago

How do you solve:(x-4)(x+2)=0

riadik2000 [5.3K]

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

x2−2x−8=0

Step 2: Factor left side of equation.

(x+2)(x−4)=0

Step 3: Set factors equal to 0.

x+2=0 or x−4=0

x=−2 or x=4

5 0

3 years ago

Read 2 more answers

Which of the following systems is dependent? x − y = 2 and x + y = −2 x − y = 2 and −2x + 2y = −4 x − y = 2 and 3x − 3y = 2 x −

hram777 [196]

A system is linearly dependent, when multiplying one of the equations by a scalar, you get the other equation.
We then have the following system of equations:
$x - y = 2

-2x + 2y = -4$
Let's rewrite the system of equations.
To do this, let's multiply equation 1 by scalar -2:
$-2x - (-2) y = (-2) 2

-2x + 2y = -4$
We observe that we obtain equation 2 of the system.
Therefore, the system is linearly dependent.
Answer:
the following system is dependent:
x - y = 2 and -2x + 2y = -4

6 0

3 years ago

What is the value of x

Delicious77 [7]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

What is 7 8/13 rounded to the nearest whole number?

vfiekz [6]

Answer: The answer would be 8.

Step-by-step explanation: I'm going to assume you mean 7 8/13 is a mixed fraction. So you multiply the denominator, 13, multiply 7 to that, then add 8 to it and the denominator would be the same as before. That should give you 99/13. When you divide, you get around 7.6, rounding closest to 8.

6 0

3 years ago