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3 years ago

Please help me w this question!! I’m so confused!!

Mathematics

1 answer:

expeople1 [14]3 years ago

8 0

Answer:

coefficient is 128 and exponent is 8

Step-by-step explanation:

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This box can be packed with 48 units cubes. The edge length of each unit cube is 1 meter. What is the volume of the box?

Dafna1 [17]

48 m³

Step-by-step explanation:

A cube has equal length width and height

A cube in this case has length 1m meaning the width and height are also 1 m each in length.

The volume of the cube is (L * W * H) = 1 * 1 * 1 = 1 m³

If 48 of these can fit in the bigger box, then the bigger box has the volume of;

48 * 1 m³ = 48 m³

Learn More:

For more on volume of a cube check out;

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#LearnWithBraily

8 0

3 years ago

How do i solve <br> (2b - 10d) - (-4b)

lisov135 [29]

Answer:

this is all I got for u look at my attachment

8 0

3 years ago

Read 2 more answers

When the health department tested private wells in a county for two impurities commonly found in drinking water, it found that 2

guajiro [1.7K]

Answer:

P( Y = 0 ) = 0.2

P( Y = 1 ) = 0.7

P( Y = 2 ) = 0.1

Step-by-step explanation:

If 20% of wells didnt have impurities it could be said as that the probability that it didnt have A and didnt have B was 0.2:

P( not A ) ∩ P ( not B ) = 0.2

Also:

P( A ) = 0.4

P( B ) = 0.5

The formulas for the union of both impurities are:

P( A ) ∪ P( B ) = P( A ) + P ( B ) - P( A ) ∩ P ( B )

P( A ) ∪ P( B ) = 1 - P( not A ) ∩ P ( not B )

Replacing and solving you get:

P( A ) + P ( B ) - P( A ) ∩ P ( B ) = 1 - P( not A ) ∩ P ( not B )

0.4 + 0.5 - P( A ) ∩ P ( B ) = 1 - 0.2

P( A ) ∩ P ( B ) = 0.1

So the probability that the wells had both impurities is 0.1

P( A ) ∪ P( B ) = 0.8

This counts as having one of the impurities or both, in order to only have one impurity you need to substract when you have both:

one impurity = P( A ) ∪ P( B ) - P( A ) ∩ P ( B ) = 0.8 - 0.1 = 0.7

Now Y is the probabilty distribuion for the numbers of impuritis.

P( Y = 0 ) = 0.2 ( 0 impurities )

P( Y = 1 ) = 0.7 ( only 1 impurity )

P( Y = 2 ) = 0.1 ( 2 impurities )

3 0

4 years ago

If A=1/2bxh, find A when b=4.5 and h=5.2

zhenek [66]

Answer:

A = 11.7

Step-by-step explanation:

Just substitute the known values into the equation:

$A=\frac{1}{2}(4.5)(5.2)\\A=11.7$

8 0

2 years ago

Lily invested $750 in a savings account and earned $225 in interest at the end of 5 years.

slava [35]

After 5 years Lily has $750+$225 = $975
The equation for interest rate looks like:
750 * x^5 = 975
x^5 = 975/750
x^5 = 1.3
x = $\sqrt[5]{1.3}$
x = 1,0538
That means that interest rate is approximately 5,5% (B)

The reason for this calculation is because each year you multiply your money with interest rate and add that to your starting money.
After one year you will earn
750 + 750 * interest rate = money after 1 year.
After 5 years we multiply 5 times so our interest rate is x^5 and money after 5 years is 750 + 225.

4 0

3 years ago