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nalin [4]
3 years ago
7

does anyone know how to do this. im dumb and need help please i will put 30points if someone actually helps

Mathematics
1 answer:
Oksana_A [137]3 years ago
3 0

Answer:

1 =98

2 = 49

3 = 63

Step-by-step explanation:

Assuming 1 is at the center since it has the dot

<1 = arc 98

<1 = 98

We can find angle 2

<2 = 1/2 the intercepted arc

<2 = 1/2 (98)

<2 = 49

We can find angle 3

Angle formed by 2 chords

<3 = 1/2(arc 70 + arc56)

<3 = 1/2(70+56)

<3 =1/2 (126)

<3 = 63

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When we factor out something, we divide the factor by the equation. For example if we were to factor 3 out of 6, It will be 3(2). We got this answer by dividing 3 and 6. Using this concept:

\frac{-1}{4}[( \frac{-1}{2} / \frac{-1}{4}) - ( \frac{5}{4} y /  \frac{-1}{4})]

Simplifying:

\frac{-1}{4}(2 + 5y)

Hope this helps!
3 0
3 years ago
The bottom of a ladder rests on the ground and the top of the ladder rests against a wall. The ladder forms a 63° angle with the
Eddi Din [679]

Answer:

the one you picked was right.

Step-by-step explanation:

if 63° was the angle and the 12 was the side then "x" will be one the bottom. then you flip the fraction meaning 1/sin63° and x/12 and then multiply 12 on both sides. you will be left with x = 12/sin63°. sorry if that doesn't make sense

5 0
2 years ago
The diagram shows the entrance to a tunnel.
gladu [14]

Step-by-step explanation:

it filled up half the circle (up to the center point) - if we had a full circle. but a little bit is cut off (below AB).

what we see is that the shaded area is the sum of the area of the triangle AOB and 2 equally sized circle segment areas left and right of AOB.

since we are dealing with a half-circle, we have 180° in total. 120° are taken by AOB, so, that leaves us with 180-120 = 60° for both circle segments (so, one has an angle of 30°).

and 2×30° = 1×60°, so we can calculate the area of one 60° segment instead of two 30° segments.

AOB is an isoceles triangle (the legs are equally long, and therefore also the 2 side angles are equal).

the area of this triangle AOB is

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a circle segment area of 60° is 60/360 = 1/6 of the full circle area (as a full circle = 360°).

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2 years ago
7 3/4 - 1/2 equivalent expression
Mashutka [201]

Answer:

7 3/4+(-1/2)

Step-by-step explanation:

4 0
3 years ago
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In this equation, you have to treat the number in the bracket first on the basis of BODMAS
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Therefore, 15- [-3] - 4 = 14.
8 0
3 years ago
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