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Kisachek [45]
3 years ago
10

Determine the unknown angle measures in a hexagon whose six angles measure 69°, 108°, 135°, 204°, b°, and 2b°.

Mathematics
1 answer:
Nata [24]3 years ago
6 0

Answer:

B = 68

Step-by-step explanation:

(6-2)×180 = 720

69+108+135+204+b+2b=720

516+3b=720

3b=720-516

3b=204

b= 68

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X=-4+y and -2x-5y=15
Scrat [10]

Answer:

x=-5, y=-1

Step-by-step explanation:

Substitute x=-4+y into -2x-5y=15. So we have

-2(-4+y)-5y=15

8-2y-5y=15

-7y=7

y=-1

And x is -4+y so x= -4+(-1)= -5.

7 0
3 years ago
Please help!!!!!!!!!!!!!!
Montano1993 [528]
<h3>Answer:   7.1</h3>

=========================================================

Explanation:

The two points are (x1,y1) = (1,3) and (x2,y2) = (8,4)

Use the distance formula to get,

d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}\\\\d = \sqrt{(1-8)^2 + (3-4)^2}\\\\d = \sqrt{(-7)^2 + (-1)^2}\\\\d = \sqrt{49 + 1}\\\\d = \sqrt{50}\\\\d = \sqrt{25*2}\\\\d = \sqrt{25}*\sqrt{2}\\\\d = 5\sqrt{2}\\\\d \approx 7.0710678\\\\d \approx 7.1

Alternatively, you can plot the two points A(1,3) and B(8,4) on the same xy grid. Then plot point C(8,3). Note that C has the same x coordinate as B, and the same y coordinate as A. Triangle ABC is a right triangle, where the 90 degree angle is at point C. The distance from A to B is the same as finding the length of AB, which is the hypotenuse.

This means we can apply the pythagorean theorem to find the hypotenuse AB. The distance formula is a modified version of the pythagorean theorem. Refer to the diagram below.

6 0
3 years ago
Couldnt find it on google so ima try here
kodGreya [7K]

Answer:

7.0

Step-by-step explanation:

4 0
3 years ago
Can someone help me with this??
Aloiza [94]
<span>–6(x – 2y) when x = –3 and y = –5
so
</span><span>–6(x – 2y) 
= </span><span>–6(-3 – 2(-5))
= -6(-3 + 10)
= -6(7)
= -42

answer
</span><span>A. -42</span>
4 0
3 years ago
heba ate 1/12 of a box of cereal now the box is 3/4 full what fraction of a full box was there before heba ate it
abruzzese [7]

Now box is 3/4 full


3/4 = 3/4*1


3/4 = 3/4 * 3/3 = 9/12


Box is 9/12 full after heba ate 1/12 of a box of cereal


Initial fraction will be 9/12+1/12


=10/12= 5/6

7 0
4 years ago
Read 2 more answers
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