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Airida [17]
2 years ago
7

Find cos 0 , help asap

Mathematics
1 answer:
insens350 [35]2 years ago
3 0

D.

Step-by-step explanation:

because cos0 = b/h

so cos0 = 8/15

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Please no wrong answers <br>what to do next??​
Finger [1]

Step-by-step explanation:

I am not sure what you want to calculate as ultimate goal.

but your have an error already in your third line in the picture.

(3-6i)(2-4i) = 3×(2-4i) - 6i(2-4i)

you had there a "+" instead of a "-".

and then you made subsequent mistakes in every line, some of them are funnily bringing you more back to the real result (e.g. -12i + 12i would be 0 and not -24i, but if the third line would have been correct, then yes, -24i is actually needed) - but not completely.

= 3×2 - 3×4i - 6i×2 + 6i×4i =

= 6 - 12i - 12i + 24×-1 = 6 - 24i - 24 = -24i - 18

then in the last 3 lines you kind of lose it completely. I am absolutely not sure, what you are calculating, and where the "+" cube from instead of "×" (multiplications) and such.

(3+6i)(2+4i) = 3×2 + 3×4i + 6i×2 + 6i×4i =

= 6 + 12i + 12i + 24×-1 =

= 6 + 24i - 24 = 24i - 18

is that what you wanted to show ?

7 0
3 years ago
what is the slope of the line that passes through the point (-1,-10) and (-1,-2). answer needs to be in simplest form
Alina [70]

La formula para sacar la pendiente:

Y2-Y1/X2-X1

Respuesta:

Y2-Y1/X2-X1= -2-(-10)/-1-(-1)

= -2+10/ -1+1= 8

R=8

Espero que te sirva

3 0
3 years ago
Read 2 more answers
Which of the following graphs represents the solution to the inequality 4x – 12 – x ≥ 3?
zubka84 [21]

Answer:

x≥5

Step-by-step explanation:

..... . .............

8 0
3 years ago
I need help with this problem ASAP
Kamila [148]

Answer:

b

Step-by-step explanation:

4 0
2 years ago
HELPPPPPPPPPPPPPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
olga55 [171]

Same solution.

volume = 1/3(8x6)(5) = 16x5 = 80cm^3

answer: 80cm^3

4 0
3 years ago
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