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lisabon 2012 [21]
2 years ago
6

WHICH ONE IS THE CORRECT ANSWERS A B C D

Mathematics
2 answers:
hjlf2 years ago
5 0

D!!!!!!!!!!!!!!!!!!!!!!!!!!!

antiseptic1488 [7]2 years ago
4 0

Answer:

i believe it's B

Step-by-step explanation:

a and b are stated as "two different numbers" and x is an unknown variable. a=a is the only one with two variables that definitively equal each other

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Can you solve d-3/5=6 before multiplying by 5 reasoning yes or no and why?
Luda [366]

Answer:

yes you can

apart from getting rid of the denominator you can collect like terms

Step-by-step explanation:

d=6-3/5

6=30/5

30/5-3/5

27/5

d=27/5

5 0
3 years ago
-5d + 11 = 8 - 3d<br> -5d + 11 + 3d = 8 - 3d + 3d
rjkz [21]

Answer:

do you have any options to choose from

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3 years ago
HELP ME PLEASEEEEEEEEEEEEEEEEE
spin [16.1K]

Second quartile is another name for median, so the answer is 8. I think. I'm second guessing myself now..

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Max is 6 years older than his brother. If Max is M years old, then his brother is ____ years old.
Doss [256]
Max' brother is M-6 years old.
6 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
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