Answer:
-3*-4=-12
Step-by-step explanation:
All other equations are correct. However, this equation is false, for when you multiply two negative signs, the answer is always positive:
-3 * -4 = 12
~
You solve this problem by factoring. After I have factored it, the problem looks like this:
(2x - 5)(x + 1)
Then the first answer would be solved this way:
2x = 5
x = (5/2)
The second answer would be:
x = -1
Hope this helped!
Answer:
- 5/2
Step-by-step explanation:
it is a negative fraction the numbers in it is not negative numbers tho just to clear it up
Answer:
A length=24ft, width=15ft
Step-by-step explanation:
the side AB have x values of 5 and the side with CD have x values of 10 so the width from b to d or a to c is 5 so the width of the drawing is 5cm
the bottom side AC has y values of 8 and the top side BD has y values of 16 so they are 8 apart so the length of the rectangular drawing is 8cm
then the scale says that 1 cm = 3 ft so multiply the length and width each by 3 to get the answer that the length of the sail is 24ft and the width is 15ft
Hope this helps! :)
Answer:
The required amount of mice is 11.82 gram.
Step-by-step explanation:
Given : Assuming that it is known from previous studies that σ = 4.5 grams. If we wish to be 95% confident that the mean weight of the sample will be within 3 grams of the population mean for all mice subjected to this protein diet.
To find : How many mice should be included in our sample?
Solution :
The formula used in the situation is
Where, z value at 95% confidence interval is z=1.96
gram is the mean of the population
gram is the standard deviation of the sample
Substituting the value, to find x sample mean
Therefore, The required amount of mice is 11.82 gram.
