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rodikova [14]
2 years ago
8

Find the length of rt

Mathematics
1 answer:
Free_Kalibri [48]2 years ago
6 0

Answer:

6

Step-by-step explanation:

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a plumber charges a service call fee of $25 plus $40 for each hour she works. which variable is the independent variable?
Viktor [21]
I think I'd be the $40 she charges every hour she works. If this is multiple choice mind drop-in the options
4 0
3 years ago
Read 2 more answers
What is the measure of the indicated angle 103° ?
Elina [12.6K]

Answer:

77 degrees.

Step-by-step explanation:

180-103=77

4 0
3 years ago
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She has one board that is 2 m 3 cm long and another that is 2 m 98 cm long. How long are the two boards together in meters?
miss Akunina [59]

Answer:

5 meters and 1 cm

Step-by-step explanation:

well their are 100 cm in 1 meter

so add 2m and 3 cm to 2 m and 98 cm

to get 4 m and 101 cm what is 5 meters and 1 cm

4 0
3 years ago
Review the steps of the proof of the identity
astraxan [27]

Answer:

step 2

and then step 3 : the error neutralized the error of step 2

Step-by-step explanation:

sin(a + b) = sin(a)cos(b) + cos(a)sin(b)

and because

sin(-b) = -sin(b)

cos(-b) = cos(b)

we have

sin(a - b) = sin(a)cos(-b) + cos(a)sin(-b) =

= sin(a)cos(b) - cos(a)sin(b)

3pi/2 = 270° or -90°.

sin(3pi/2) = sin(270) = sin(-90) = -1

that means, it is the full radius straight down from the center of the circle.

cos(3pi/2) = cos(270) = cos(-90) = cos(90) = 0

so, step 1 is correct :

sin(A - 3pi/2) = sin(A)cos(3pi/2) - cos(A)sin(3pi/2) =

= sin(A)×0 - cos(A)×(-1) (correct step 2)

but as we see, the provided step 2 is incorrect.

it should have been the indicated

sin(A)×0 - cos(A)×(-1)

and NOT the provided

sin(A)×0 + cos(A)×(-1)

step 3 based on the erroneous step 2 should then have been

sin(A)×0 - (1)cos(A)

but instead another error with the sign was made that neutralized the error of step 2 and we got after this second mistake by pure chance the overall correct step 3

sin(A)×0 + (1)cos(A)

so, again, the first error was made in step 2.

but technically, there was also a consecutive error made in step 3 to bring everything back to the correct approach.

4 0
2 years ago
Which number has two lines of symmetry?<br><br> 101<br> 619<br> 33<br> 18
7nadin3 [17]

33 in middle - and in between I

4 0
3 years ago
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