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photoshop1234 [79]
3 years ago
14

Find the common ratio of the geometric sequence -20, 140, -980, ...

Mathematics
1 answer:
aksik [14]3 years ago
3 0

Answer:

-7

Step-by-step explanation:

-20  × -7 = 140

140 × -7 = -980

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adell [148]

The answer would be 10$

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Properties of Light Lab Report
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Can You Give Me Some More Information

Step-by-step explanation:

5 0
2 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
What is -5x + 2 equals negative 48
VikaD [51]
The answer would be X=10
First you would subtract 2 to -48 and that gives you -50. After you will divide the -5x to -50 and that gives you X=10

3 0
3 years ago
Read 2 more answers
What is the quotient of Negative 27.374 divided by 7.5
iren2701 [21]

Answer:

-3.65

Step-by-step explanation:

-27.374 / 7.5

≈ -3.65

Best of Luck!

3 0
3 years ago
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