Answer:
B. It is a composite number.
Step-by-step explanation:
143 can be divided by 11 and 13 making it a composite number.
Answer:
The standard deviation is not greater than 5 mg ()
Step-by-step explanation:
First we need to find the z-score for a 0.05 level of significance.
Looking in the z-table with alpha = 0.05, we have z = 1.645.
Now, finding the standard error of the mean, we have:
The standard deviation with 0.05 level of significance would be:
This deviation is not greater than 5 mg.
the volume of the composite figure is . Correct option D)
<u>Step-by-step explanation:</u>
Here we have , The figure is made up of a cylinder and a sphere which has been cut in half. The radius of each half sphere is 5 mm. We need to find What is the volume of the composite figure . Let's find out:
We know that Volume of figure is :
⇒ Volume of cylinder + Volume of hemi-sphere
⇒
⇒
Putting values of h= 10 mm , r = 5 mm( Not given in question ! Searched in correct question )
⇒
⇒
⇒
Therefore , the volume of the composite figure is . Correct option D)
Answer:
Step-by-step explanation:
Multiply:
427.5 is your answer.
Answer:
13a) $3.40
13b) 0.85X
13c) $25.88
Step-by-step explanation:
13a) When there is a 15% discount, we can say that we are only paying 85% of the original price because out of 100%, 15% is taken away. 85% in decimals is 85/100 = 0.85.
$4 x 0.85 is the discounted price, which is $3.40
13b) In 13a, the price was 4. Now, the price is X. Hence we plug in (substitute) X in for 4, giving us X x 0.85, which we can write as 0.85X
13c) 85% of the cake is $22. To find 100% of the price, we can find 1% of the original price and then multiply that by 100, which gives us 100% of the price.
We know 85% of the original price. Therefore, dividng the price by 85 will give us 1% of the price. 1% = $22/85
Finally, to calculate 100%, we multiply by 100.
22/88 x 100 = 440/17 which is 25.882 in decimals, which we round to 2 decimal places (because it is currency) = $25.88