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soldier1979 [14.2K]
3 years ago
14

Lucas is planting grass on the shaded portions of the yard. What will be the total area covered by​ grass?

Mathematics
1 answer:
maxonik [38]3 years ago
8 0

Complete Question:

Lucas is planting grass on the shaded portions of the yard. What will be the total area of covered by grass? Fill in the missing.

Part A= 12 x ? = ? ft²

Part B= 0.5 x ? x 9 = ?ft²

Part C= 0.5 x 7 x ? = ?ft²

Total Area= ?ft²

Answer:

A = 108ft^2

B = 27ft^2

C = 24.5ft^2

Area = 159.50ft^2

Step-by-step explanation:

Given

See attachment

From the attachment;

Part A is a rectangle with dimension 9ft by 12ft

So,

A = 12ft * 9ft

A = 108ft^2

Part B is a triangle with dimension: height = 6 and base = 9

The height is calculated as:

Height = 12ft - 6ft = 6ft

And the base is:

Base = 18ft - 9ft = 9ft

So, the area is:

B = 0.5 * 6ft * 9ft

B = 27ft^2

Part C is a triangle with dimension: height = 7 and base = 7

So, the area is:

C = 0.5 * 7 * 7ft^2

C = 24.5ft^2

Total Area is:

Area = A + B + C

Area = 108ft^2 + 27ft^2 + 24.5ft^2

Area = 159.50ft^2

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just olya [345]

Answer:

40 1/4

Step-by-step explanation:

160 is a multiple of 4

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A toy manufacturer wants to know how many new toys children buy each year. A sample of 1492 children was taken to study their pu
julia-pushkina [17]

By assuming the standard deviation of population 2.2 the confidence interval is 8.67 toys,8.94 toys.

Given sample size of 1492 children,99% confidence interval , sample mean of 8.8, population standard deviation=2.2.

This type of problems can be solved through z test and in z test we have to first find the z score and then p value from normal distribution table.

First we have to find the value of α which can be calculated as  under:

α=(1-0.99)/2=0.005

p=1-0.005=0.995

corresponding z value will be 2.575 for p=0.995 .

Margin of error=z*x/d

where x is mean and d is standard deviation.

M=2.575*2.2/\sqrt{1492}

=0.14

So the lower value will be x-M

=8.8-0.14

=8.66

=8.67 ( after rounding)

The upper value will be x+M

=8.8+0.14

=8.94

Hence the confidence interval will be 8.67 toys and 8.94 toys.

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8 0
2 years ago
Express a(2) (2a(-1/2)+a) in its simplest form
Soloha48 [4]
First lets simplify the first term and yield (2a)

The second term:
1.   2a * (-1/2) = -a
2.   -a + a = 0

Now we have simplified both terms to: (2a) (0)

Anything multiplied by 0 is 0, so the answer is also 0. 
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Can anyone help me on #3?? And explain?
Alekssandra [29.7K]
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13/5 = x/10
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That's your answer. Have a nice day! :)
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3 years ago
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aniked [119]

To solve this problem, we first have to convert 5 1/2 into an improper fraction. To do this, we multiply the unit (5) times the denominator (2) and then add the numerator (1) to the product, while still keeping the same denominator.


(5 * 2) + 1 = 10 + 1 = 11/2


Now, this makes our expression: 11/2 - 2/3


Next, we have to find a common denominator for 2 and 3 by finding their shared LCM, or least common multiple. In this case, the LCM is 6. This means that we are going to convert both of the fractions in the expression into fractions with the denominator 6, so that we can easily compute the subtraction.


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Now, we can simply subtract the numerators to find our final answer.


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Your final answer is 29/6.


Hope this helps!



3 0
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