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3 years ago

My teacher doesn’t really teach, so I don’t understand ANYTHING, so just need some help figuring out he answer !

Mathematics

2 answers:

liq [111]3 years ago

7 0

This triangle is an isosceles triangle. That means that the two base angles are equal.

You can set the two expressions equal to each other.

15x-13=8x+29

Solving this, you will find that x=6

Now you can plug x into the two expressions.

15(6)-13=77

8(6)+29=77

Those are the measurements of the two angles.

To find the last angle, you know that the angles of any triangle add up to 180 degrees. Using this information, you can add up the 3 angle measurements and set them equal to 180.

77+77+2y=180

y=13

Now plug in y.

2(13)=26

THe three angle measures are 77, 77, and 26

kozerog [31]3 years ago

6 0

Set it up as 15x-13+8x+29+2y=180 and then just find a algebra calculator and put that formula in there

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The tire of a car has a radius of 10.5 inches. How many rotations does the tire need to make five for the car to travel 3,297 in

yan [13]

It would be 314 because 3297/10.5 = 314

4 0

2 years ago

A school district is considering moving the start of the school day at Groveland High from 8:00 a.m. to 9:00 a.m. to allow stude

DaniilM [7]

Answer:

The answer is " $\bold{(7.1-8.3) \pm 1.665 \sqrt{\frac{(1.7)^2}{50}+\frac{(1.9)^2}{39}} }\\\\$ "

Step-by-step explanation:

Given values:

$\bar{x_1}=7.1\\\\\bar{x_2}=8.3\\\\s_1=1.7\\\\s_2=1.9\\\\n_1=50\\\\n_2=39$

Using formula:

$\to (\bar{x_1} -\bar{x_2}) \pm t \sqrt{\frac{(s_1)^2}{n_1}+\frac{(s_1)^2}{n_2}} \\\\$

Put the values in the above formula:

$\to (7.1-8.3) \pm 1.665 \sqrt{\frac{(1.7)^2}{50}+\frac{(1.9)^2}{39}} \\\\$

4 0

2 years ago

Please help me thanks

PilotLPTM [1.2K]

6x + 45 + 3x = 180
9x - 45 = 180
9x = 135
x = 15

8 0

2 years ago

Write the equation of the circle centered at ( 7 , − 5 ) (7,-5) with diameter 16

galina1969 [7]

The equation of a circle is (x - h)² + (y - k)² = radius² where (h, k) is the center.

If the diameter is 16, then the radius is 8.

Your equation is:
(x - 7)² + (y + 5)² = 64

3 0

3 years ago

Select the quadrant in which the terminal side of the angle falls.

Sedbober [7]

Answer:

The answer is below

Step-by-step explanation:

Select the quadrant in which the terminal side of the angle falls.

210° terminates in quadrant

-150° terminates in quadrant

390° terminates in quadrant

Solution:

The x and y axis divides the cartesian plane into four equal parts known as the four quadrants.

Angles between 0° and 90° are in the first quadrant, angles between 90° and 180° are in the second quadrant, angles between 180° and 270° are in the third quadrant while angles between 270° and 360° are in the fourth quadrant.

a) Since 210 degrees is between 180° and 270°, hence it terminates in the third quadrant.

b) -150° = 360 - 150 = 210°. Since 210 degrees is between 180° and 270°, hence it terminates in the third quadrant.

c) 390° = 390° - 360° = 30°.

Since 30 degrees is between 0° and 90°, hence it terminates in the first quadrant.

8 0

3 years ago