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Alex777 [14]
2 years ago
5

a) Use the triangle below to work out the exact value of sin 45°. 12 1 1 b) Hence, or otherwise, give the exact value of sin 135

º.​

Mathematics
1 answer:
MariettaO [177]2 years ago
3 0

Answer:

258

Step-by-step explanation:

cause 1and 1 are the same size

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What is the arc measure of AC in degrees?
Mariulka [41]

Answer:

111

Step-by-step explanation:

simce p is the midppoint we kniw that AB is 180 so if you subtract 180 from 69 you get 111

8 0
3 years ago
Add or subtract. use the least common multiple as the denominator what is 5/8-5/25
Vinvika [58]

Answer:

17/40

Step-by-step explanation:

First let's find the least common denominator. The denominators are 8 and 25 so we need to find the least common multiple of 8 and 25.

8=2*2*2

25=5*5

Since they share no common factors the least common multiple of 8 and 25 is 8*25 which is 200.

Now we convert the fractions:

5/8*25/25=125/200

5/25*8/8=40/200

Then we subtract:

125/200-40/200=85/200

Now we simplify it:

17/40

8 0
2 years ago
Read 2 more answers
The science club went on a two day field trip. The first day the members paid $60 for Transportation plus $15 per ticket to the
DaniilM [7]
T= Total cost
m= # of members

Total equals $60 fee plus ($15 times # of members) plus $95 fee plus ($12 times # of members)

T= $60 + $15m + $95 + $12m
combine like terms

EXPRESSION:
T= $27m + $155

Hope this helps! :)
5 0
3 years ago
Please help!! <br> it says what I wrote is too short so
kvv77 [185]

Answer:

50 cents The red on the right end.

Step-by-step explanation:

Let the chocolate chip cookies = x

Let the jumbo popcorn = y

Julie

y + 2x = 5

Marvin

y + 4x = 6                  Subtract

-2x = - 1                     The y's disappear. You are left with 1 dollar (negative). Divide by - 2

-2x/-2 = - 1 / -2

x = 1/2

x  = 0.5 or 50c

Each cookie costs 50c

3 0
3 years ago
Solve using completing the square x^2 – 8x + 16 = 25
lisov135 [29]

First we need to factor the left side. Since it is a perfect square (as is the process with completing the square, we know we can take half of the middle number along with x to be in the two parenthesis.

(x - 4)(x - 4) = 25

Now we simplify to show it as a square.

(x - 4)^2 = 25

Next we take the square root of both sides

x - 4 = +/- 5

Note that we have plus or minus 5. This is because either square would give us positive 25. Now we add 4 to both sides

x = 4 +/- 5

4 + 5 = 9

4 - 5 = -1

5 0
3 years ago
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