3 years ago

Sin 30 = A. Cos 30 B. Sin 60 C. Tan 60 D. Cos 60

Mathematics

1 answer:

Alik [6]3 years ago

6 0

Sin 30 is equal to Cos 60, I hoped that helped u

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At a pie cook-off, the judges ate 512 of Mary’s pie and 916 of Jerome’s pie.

IRISSAK [1]

Answer:

Step-by-step explanation:

I think you meant to put 5/12 ad 9/16 but in any case, even if it were 51/2 and 91/6 or anything else, the answer would be no

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3 years ago

Solve the system of linear equations by substitution

Bond [772]

Answer:

(-4, 5)

Step-by-step explanation (work shown in attached picture):

1) Since x is already isolated in the first equation, substitute that value for x into the other equation to find y. So, substitute 16-4y for the x in 3x + 4y = 8, then solve for y. This gives us y = 5.

2) Now, substitute that given value for y back into any one of the equations to find x. I chose to do it in the first equation. Substitute 5 for the y in x = 16-4y, then solve for x this time. This gives us x = -4.

Since x = -4 and y = 5, the solution is (-4, 5).