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TiliK225 [7]
3 years ago
5

I need help thanks !

Mathematics
1 answer:
Otrada [13]3 years ago
6 0

First did you use the video/hint?? But here u go 607,000

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a machine can reduce 21 inches of ribbon every 3 minutes. How many feet of ribbon can the machine make in one hour?
Zarrin [17]
Okay. Let's make a proportion for this. So we can do 21/3=x/60. Let's multiply cross way. So 21 x 60 is 1260. We multiply 3 by x to get 3x. So our equation will be 3x=1260. We can isolate the equation by 3, and 1260 divided by 3 is 420. So x=420. We then have to convert into feet. So 420 divided by 12 is 35. So it would be 35 feet. Therefore, the machine can make 35feet of ribbon in a hour.
3 0
3 years ago
Can someone help me solve this problem (i)-(7-8i)
jok3333 [9.3K]
I represents \sqrt{-1} then there is the imaginary part, and the real part
the i is the imaginary
the 7 is the real part
distribute
i-(7-8i)
i-1(7-8i)
i-7+8i
-7+9i
it is normally writtnen in a+bi where a is the real part and b is the imaginary part

so the answer is -7+9i
6 0
3 years ago
Read 2 more answers
Can someone please help me?
Ket [755]

Answer:

what is the question

Step-by-step explanation:

5 0
3 years ago
Find the variable of each ............
QveST [7]

Answer:

The answer is option d.

To find a we have to first find b

sin 60° = b / 10

b = 10 sin 60°

b = 5√3

sin 30° = b / a

b = 5√3

a = 5√3 sin 30°

a = 10√3

cos 30° = c / a

a = 10√3

c = 10√3 sin 30°

c = 15

cos 60° = d /10

d = 10 cos 60°

d = 5

a = 10√3 , b = 5√3 , c = 15 and d = 5

Hopethis helps.

4 0
3 years ago
there are 33 seventh graders and 27 eighth graders in band, and 9 members of the band play trumpet. What decimal describes the p
Salsk061 [2.6K]
33+27=60. 9/60= .15 there's not much more to say.
4 0
3 years ago
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