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aleksklad [387]
3 years ago
15

Simplify the expression using the appropriate identities. (Do not use calculator)

Mathematics
1 answer:
bezimeni [28]3 years ago
6 0

Answer:

sin -1 degrees.

Step-by-step explanation:

sin (A - B) = sin A cos B - cos A sin B

Therefore  sin 9° cos 10°- cos 9º sin 10° = sin (9 - 10)

= sin -1 degrees.

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Pleeeaaaase help me #16
-BARSIC- [3]
I think K=1.123
you have to find by how much it's increasing, think of 6(1/2) times WHAT equals 7(1/3)
6(1/2)a=7(1/3)
a=1.123
That means each side will be the same times 1.123
x=4.492
you can round that to 4.49 or 4.5 or 5
3 0
3 years ago
Claire sat a spanish test and a french test In the spanish test she scored 27 out of 32 In the french test she scored 19 out of
balu736 [363]

Answer:

French test

Step-by-step explanation:

We first calculate the scores as percentages:

#Spanish test:

=\frac{score}{total}\times 100\%\\\\\\=\frac{27}{32}\times 100\%\\\\=84.38\%

#For the French test, her percentage is:

=\frac{score}{total}\times 100\%\\\\=\frac{19}{21}\times 100\%\\\\=90.48\%

Since, 90.48$>84.38%, Claire did better in the French test.

7 0
3 years ago
Please help n show work
notsponge [240]

x = time in minutes

y = distance remaining

Steve starts at home when the time is x = 0 minutes. The y value y = 40 pairs up with this x value. This is shown by the point (0,40) on the diagonal line, aka the y intercept. The y intercept is where the line crosses the y axis.

The y = 40 indicates that Steve has 40 miles remaining when he starts at home. In other words, the distance from home to work is 40 miles.

The x intercept is where the diagonal line crosses or touches the x axis. The x intercept is (45,0) which represents the idea that 45 minutes have passed by. The y = 0 means that he has 0 miles left go to. Steve has reached the office at this point.

-----------------------------------------------

Answers:

Steve's office is located 40 miles from home

It takes him 45 minutes to travel this distance

3 0
3 years ago
PLEASE HELP
Rashid [163]

See the image below, hope it helps!

7 0
3 years ago
Read 2 more answers
Find an equivalent expression to 2x/3xy
mariarad [96]
X(2/3y)
factor out an x on both numerator and denominator
5 0
2 years ago
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