I couldn't tell from your question if there was a negative on the 4 or not.
If your number was , you're being told to make the number bigger by moving the decimal point 4 places to the right. You essentially multiplying by 10 four times over.
If your number was , you're being told to make the number smaller by moving the decimal point 4 places to the left You essentially dividing by 10 four times over.
Can you take it from there?
Answer:
once you factor it you get: (x+2)(x-1)
then when you solve for x the answer would be -2 and 1
Step-by-step explanation:
Answer: your answer should be 111%. Subtract 100 from 111, to get the increased percent.
Step-by-step explanation:
4.0/5
5
CrystalKelly
Ambitious
20 answers
2.7K people helped
use cross multiplication. 42 inches is your 100%. your fraction would be 42/100
then, to find by what percent it has increased, since 47 is your new height, and you are trying to find the percentage for that, the fraction will be 47/X.
42 47
----- -----
100 X
(100 * 47) / 42 = X
100 multiplied by 47, then divided by 42, the result is X
Answer:
x = ±i8/7
Step-by-step explanation:
49x^2 +64 = 0
Subtract 64 from each side
49x^2 +64-64 = 0-64
49x^2 = -64
Divide by 49
49x^2/49 =-64 /49
x^2 = - 64/ 49
Take the square root of each side
sqrt(x^2) = ±sqrt(- 64/ 49)
x = ±sqrt(- 64/ 49)
We know sqrt( ab/c) = sqrt(a) sqrt(b)/sqrt(c)
x = ±sqrt(- 1) sqrt(64)/( 49)
We know that the sqrt(-1) = i
x = ±i8/7
Answer:
B!!!
Step-by-step explanation: