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krek1111 [17]
3 years ago
8

1 What is the value of this expression? 2 +4² x 4 - 12

Mathematics
2 answers:
Sophie [7]3 years ago
8 0

Answer:

54

Step-by-step explanation:

pedmas rule

2+16*4-12

2+64-12

66-12=54

____ [38]3 years ago
7 0

<u><em>Tell Me If Somethings wrong with my answer! </em></u>

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Hadley has a 1/2 kg of popcorn she divides the popcorn into three equal bags how many kilograms of popcorn with each bag
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\frac{1}{2}  / \frac{3}{1} = \frac{1}{2} * \frac{1}{3} = \frac{1}{6}
So each bag will contain 1/6 kilogram of popcorn
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This year Tammy watched 80 movies she thought that 72 of them were very good of the movie she watched what percentage does she t
dimaraw [331]

Answer:

its 20% i think hope this helped

Step-by-step explanation:

4 0
3 years ago
The inner square has sides of 3 inches and the outer square has sides
EastWind [94]
X is the hypotenuse of an isosceles triangle. The length of the sides are the difference of the inner and outer squares divided by 2. Which means that the sides of the triangle is 1.5 inches. Using that information, the length of X can be deduced to be 2.12 inches using Pythagoras theorem
7 0
3 years ago
-3z+8=2z-12 what is the answer?
Gre4nikov [31]

Answer:

Step-by-step explanation:

Simplifying

-3a + 8 = 2z + -12

Reorder the terms:

8 + -3a = 2z + -12

Reorder the terms:

8 + -3a = -12 + 2z

Solving

8 + -3a = -12 + 2z

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-8' to each side of the equation.

8 + -8 + -3a = -12 + -8 + 2z

Combine like terms: 8 + -8 = 0

0 + -3a = -12 + -8 + 2z

-3a = -12 + -8 + 2z

Combine like terms: -12 + -8 = -20

-3a = -20 + 2z

Divide each side by '-3'.

a = 6.666666667 + -0.6666666667z

Simplifying

a = 6.666666667 + -0.6666666667z

3 0
3 years ago
Read 2 more answers
NASA is conducting an experiment to find out the fraction of people who black out at G forces greater than 6. In an earlier stud
SSSSS [86.1K]

Answer:

The large sample n = 190.44≅190

The  large  sample would be required in order to estimate the fraction of people who black out at 6 or more Gs at the 85% confidence level with an error of at most 0.04 is n = 190.44

<u>Step-by-step explanation</u>:

Given  population proportion was estimated to be 0.3

p = 0.3

Given maximum of error E = 0.04

we know that maximum error

M.E = \frac{Z_{\alpha } \sqrt{p(1-p)} }{\sqrt{n} }

The 85% confidence level z_{\alpha } = 1.44

\sqrt{n} = \frac{Z_{\alpha } \sqrt{p(1-p)} }{m.E}

\sqrt{n} = \frac{1.44X\sqrt{0.3(1-0.3} }{0.04}

now calculation , we get

√n=13.80

now squaring on both sides n = 190.44

large sample n = 190.44≅190

<u>Conclusion</u>:-

Hence The  large  sample would be required in order to estimate the fraction of people who black out at 6 or more Gs at the 85% confidence level with an error of at most 0.04 is n = 190.44

7 0
3 years ago
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