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lina2011 [118]
3 years ago
12

Help plzzzz!!!!!!! thank you .

Mathematics
1 answer:
Likurg_2 [28]3 years ago
7 0

Answer:

120°

Step-by-step explanation:

<U + <T = 180

or, 6x-6+9x+21=180

or, 15x=165

or, x=11

so, <T = 9×11+21 = 120

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Well, there is 6 corners that doesn't touch each other. And if you add the ones that are touching each other then it has 10 corners.
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The sector of a circle with a 12-inch radius has a central angle measure of 60°. What is the exact area of the sector in terms o
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Read 2 more answers
At a local tech school, there are 6 math classes and each class has 27 students. The school pays for the book and calculators fo
umka21 [38]

The first step to solve this problem, you have to compute first for the total number of students:

6 math classes x 27 students per class = 162 students

Now, you know that there are 162 students all in all in the school. The next step is to compute for the total cost of both the book and the calculator per student.

$45.10 (Book) + $57.80 (Calculator) = $102.90 (total cost per student)

To compute for the total cost that the school will pay, you have to multiply the total cost per student to the number of students in school.

$102.90 per student x 162 students = $16,669.80

Therefore, the total cost the school will pay is $16,669.80.

6 0
3 years ago
Write an equation of the line that passes through a pair of points:<br> (-5, - 2), (4, 5)
attashe74 [19]

Answer (<u>assuming it can be written in slope-intercept form)</u>:

y = \frac{7}{9} x+\frac{17}{9}

Step-by-step explanation:

1) First, find the slope of the line. Use the slope formula, m = \frac{y_2-y_1}{x_2-x_1}. Substitute the x and y values of the given points into the formula and solve:

m = \frac{(5)-(-2)}{(4)-(-5)} \\m  = \frac{5+2}{4+5} \\m = \frac{7}{9}

So, the slope is \frac{7}{9}.

2) Now, use the point-slope formula y-y_1 = m (x-x_1) to write the equation of the line. Substitute m, x_1, and y_1 for real values.

Since m represents the slope, substitute \frac{7}{9} for it. Since x_1 and y_1 represent the x and y values of one point the line intersects, choose from any one of the given points (it doesn't matter which one, either way the result equals the same thing) and substitute its x and y values into the formula as well. (I chose (4,5), as seen below.) From there, isolate y to place the equation in slope-intercept form (y = mx + b format) and find the following answer:

y-(5) = \frac{7}{9} (x-(4))\\y-5 = \frac{7}{9} (x-4)\\y -5=\frac{7}{9} x-\frac{28}{9}\\y = \frac{7}{9}  x-\frac{28}{9} +\frac{45}{9}\\y = \frac{7}{9} x+\frac{17}{9}

6 0
3 years ago
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