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Yuliya22 [10]
3 years ago
7

Find the value of x and yPlease help me. Thank you​

Mathematics
1 answer:
STatiana [176]3 years ago
5 0

Answer:

Step-by-step explanation:

let each angle=A

A+A+A=180

3A=180

A=180/3=60°

as the angles are equal so sides are equal.

16+y=46

y=46-16=30

applying sine formula

\frac{30}{sin z} =\frac{46}{sin~80} \\sin~z=\frac{30}{46} \times ~sin~80=\frac{15}{23} \times sin ~80\\z=sin^{-1}( \frac{15}{23} \times sin ~80) \approx~39.96^\circ \approx40^\circ

z+x=60

40+x=60

x=60-40=20°

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8 0
3 years ago
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Mrac [35]
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James sets off from home on his bike.The graph shows his journey.A)what is James average speed on his outward journey?B)How long
katen-ka-za [31]

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a) ~10.58 km/h

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c) 15 km/h

Step-by-step explanation:

a) 45km for 4 hours and 15min (4.25 hours) = 45 / 45.25 ~= 10.58 km/h

b) From 4:15 to 5 = 45min

c) 45km for 3 hours (5:00 to 8:00) = 45 / 3 = 15 km/h

NOTE!

The author actually wanted the answer on A) to be 10 km/h and the journey to be 4.5 hours (4 hours 30min) but instead they made it 4.25 (as shown on the graph, since 1 square is 30 minutes).

5 0
3 years ago
Please help ASAP I have no clue how to do this​
Salsk061 [2.6K]
It’s a triangle
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r t

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2x+10=x-4
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6 0
3 years ago
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Genrish500 [490]

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B: 2800 hydrogen atoms

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5 0
3 years ago
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