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andrezito [222]
3 years ago
9

if you need to know the amount of frosting to put on the outside of the brownies you need to know perimeter area volume which on

e ​
Mathematics
2 answers:
MA_775_DIABLO [31]3 years ago
6 0
You need the area, because area is the space on top of those brownies. If it were perimeter, the frosting would only be put on the edges of the brownies and if it were volume the frosting would be put inside the brownies. :)
kompoz [17]3 years ago
5 0
You would need to find the area of the brownies first and then ice them
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During a period of 11 years 737737 of the people selected for grand jury duty were​ sampled, and 6868​% of them were immigrants.
Galina-37 [17]
The formula to set out the lower and the upper margin of a confidence interval when given the proportion (no standard deviation) is

Lower margin = p - Z* √[(pq) ÷ n]
Upper margin  = p + Z* √[(pq) ÷ n]

Where:
p is the sample proportion
q is 1 - p
Z* is the z-score for the confidence level
n is the number size
--------------------------------------------------------------------------------------------------------------

p = (68% of 737) ÷ 737 = 501.16 ÷ 737 = 0.68
q = 1 - p = 1 - 0.68 = 0.32
Z* = 2.58 (refer to the table attached below)
n = 737 

substituting these values into the formula, we have

lower margin = 0.68 - (2.58) √[(0.68×0.32) ÷ 737]
lower margin = 0.68 - (2.58) √(0.0002952510176...)
lower margin = 0.68 - 0.04433180431
lower margin = 0.6357 (rounded to four decimal places)
lower margin = 63.57%

upper margin = 0.68 + 0.04433180431
upper margin = 0.7243 (rounded to four decimal places)
upper margin = 72.43%

The confidence interval is between 63.57% and 72.43%. In other words, we can say that between 63.57% and 72.43% of jury members are immigrant. 

The claim of 69.46% is within the confidence interval, hence we can conclude that the selection of grand jury duty is not biased against the immigrant. 



8 0
3 years ago
Hugo has $20. he spends n dollars.How much does he have left?​
Alexxx [7]

Answer:

Depends

Step-by-step explanation:

If n is 1n then he have 20 dollars left but if we don't know about the value of n the it is still 20

3 0
3 years ago
Read 2 more answers
How to find the area
SOVA2 [1]

Answer:A=bh

Step-by-step explanation:A triangle is A=1/2 bh

A recetangle is A=bh

A trapezoid is A=1/2 h(b1+b2)

5 0
3 years ago
Read 2 more answers
Find the surface area of the prism below. Please see the attachment and a. 108cm ^2 is incorrect. Thanks!
creativ13 [48]

Answer: OPTION B

Step-by-step explanation:

To solve this problem you must add the areas of each rectangle that form the prism;

The area of a rectangle can be calculated with the formula:

SA=length*width

There are three pairs of equal rectangles, then you can find the surface area of 3 rectangles and multiply each one by 2, then you obtain that the surface area of the prism is:

SA_{prism}=2(6cm*2cm)+2(3cm*6cm)+2(3cm*2cm)=72cm^{2}

5 0
2 years ago
PLZ HELP I WILL GIVE BRIANLY!
kumpel [21]

Answer:36

Step-by-step explanation:

\frac{4}{7} =\frac{48\\}{84}

for every 7 students there are 4 girls, so for every 84 there must be 48

7*12=84

4*12=48

so, in all 84 students there are 48 girls

so amount of boys=84-48=36

there are 36 boys

8 0
2 years ago
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