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const2013 [10]
3 years ago
11

Please help! i don't know what to do

Mathematics
1 answer:
Strike441 [17]3 years ago
6 0

Answer:

0.5* sin(x)

Step-by-step explanation:

As well known  sin (2A)= 2sin(A)*cos(A)

As in our case A=x/2  => cos(x/2*sin(x/2)=1/2*sin(x)=0.5*sin(x)

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What multiples for 90 and adds up to -23 ?
melamori03 [73]

Easy buddy...

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Step (1)

I choose a number which is x

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Step (2)

Multiplies by 90 :

90x

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Step (3)

Adds up to -23 :

90x - 23

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And we're done.

Thanks for watching buddy good luck.

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7 0
3 years ago
Previous
PilotLPTM [1.2K]

just realized this is an old question

7 0
3 years ago
Express the following as:<br>ax+by+c=0<br><br>-2x+3y=6​
Cerrena [4.2K]

The expression -22x + 3y = 6 in the form ax + by + c = 0 is -2x + 3y - 6 = 0

<h3>Linear Equations</h3>

The given equation is:

-2x + 3y = 6

Comparing the equation above with ax + by + c = 0

Rewrite -2x + 3y = 6 in the form ax + by + c = 0

-2x + 3y - 6 = 0

If -2x + 3y - 6 = 0 is compared with ax + by + c = 0

a = -2, b = 3, c = -6

Therefore, the expression-22x + 3y = 6 in the form ax + by + c = 0 is -2x + 3y - 6 = 0

Learn more on linear equations here: brainly.com/question/14323743

8 0
2 years ago
Read 2 more answers
Elena surveyed her classmates to see how many like to make jewelry. When she asked 20 of her classmates, 50 percent said they li
nordsb [41]

10 students of Elena's classmates like to make jewellery.

<u>Step-by-step explanation:</u>

Let total no.of classmates who liked the jewellery = x

Here, in the given problem, given she asked her classmates '20'. So, it clearly shows that total number of students/classmates = 20. Also, in that, 50% said like to make jewellery. Now find 'x' as below,

                    x = 50 \% \text { of } 20

                    x = \frac{50}{100} \times 20

                    x = 10

Hence, the total number of classmates who liked to make Jewellery = 10

5 0
3 years ago
16 - 2t = 5t + 9<br><br> What number does t represent? I'm bored
seraphim [82]
Try not to be bored.  You can take the attitude that you actually like math, and that you will some day actually be a MathGenius.

t represents an unknown quantity defined by the equation 16 - 2t = 5t + 9.

To find this value, do the following:  Add 2t to both sides, and then subtract 9 from both sides.  You'll end up with 7t = 7, which yields t = 1.

We call this the "solution" of the equation given.
8 0
3 years ago
Read 2 more answers
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