<u>7</u> <u>35</u> 4x35/7= 20 lawns<u>
</u>4 x<u>
</u>
Answer:
B. the product of two irrational numbers
Step-by-step explanation:
To be a rational number, we need to multiply two irrational numbers
An example would be
sqrt(2) * sqrt(2) = sqrt(4) = 2
Divide the interest by the time, then divide that number by the principal. you should get an answer that is 0.0475. or 4.75%
Answer:
1) 2.6 ft³
Step-by-step explanation:
for the first one, multiply height times width times depth divided by two, since it is a triangle. Area of a triangle is always height times width divided by two.
So
(1.3 × 1 × 4)/2 = 2.6 ft³
The second one you can see as 6 of those triangle bars glued together, can you calculate the volume then?
Answer:
The 85% confidence interval for the mean number of toys purchased each year is (6.7, 6.9).
Step-by-step explanation:
We have that to find our
level, that is the subtraction of 1 by the confidence interval divided by 2. So:

Now, we have to find z in the Ztable as such z has a pvalue of
.
That is z with a pvalue of
, so Z = 1.44.
Now, find the margin of error M as such

In which
is the standard deviation of the population and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 6.8 - 0.1 = 6.7
The upper end of the interval is the sample mean added to M. So it is 6.8 + 0.1 = 6.9
The 85% confidence interval for the mean number of toys purchased each year is (6.7, 6.9).