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3 years ago

HELP ME HOW DO I DO THIS I ALWAYS GET IT WRONG I NEED HELP AND NEED TO KNOW HOW YOU DID IT PLEASEEEEEEEE

Mathematics

2 answers:

seraphim [82]3 years ago

7 0

Answer:

Step-by-step explanation:

The surface area of a rectangular prism has six sides so you must find the sum of the areas of all sides.

A=2xy+2xz+2yz

A=2(xy+xz+yz) you have x,y,z as 3,2,4 so

A=2(3(2)+3(4)+2(4))

A=2(6+12+8)

A=2(26)

A=52 cm^2

prisoha [69]3 years ago

6 0

Answer:

52cm^2

Step-by-step explanation:

Hope this Helps!!!!

A=2xy+2xz+2yz

A=2(xy+xz+yz) you have x,y,z as 3,2,4 so

A=2(3(2)+3(4)+2(4))

A=2(6+12+8)

A=2(26)

A=52 cm^2

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3 years ago

Please Help.....' Divide. Write your answer to the simplest form. 5/6 divided by 7/10

belka [17]

Answer:

5/6 ÷ 7/10 = 1 4/21

Step-by-step explanation:

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We also simplify the answers to fraction problems whenever possible. hope this helps

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3 years ago

The Blue Diamond Company advertises that their nut mix contains (by weight) 40% cashews, 15% Brazil nuts, 20% almonds and only 2

jek_recluse [69]

Answer:

At the 0.05 level of significance, the claim made by Blue Diamond is true

Step-by-step explanation:

Given that the Blue Diamond Company advertises that their nut mix contains (by weight) 40% cashews, 15% Brazil nuts, 20% almonds and only 25% peanuts.

$H_0: The mix are as per percents given\\H_a:Atleast two differ from the above percent.$

(Two tailed chi square test at 5% significance level)

Chi square is calculated as (Obs_exp)^2/Expected

Cashews Brazil nuts Almonds Peanuts Total

Observed 5 6 6 3 20

Expected 40% 15% 20% 25% 1

Expected 8 3 4 5 20

Chi square 1.125 3 1 0.8 5.925

df = 3

p value = 0.1153

Since p value >0.0 we accept null hypothesis.

4 0

3 years ago