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pickupchik [31]
3 years ago
14

Find the composite area of the shaded region

Mathematics
2 answers:
Anvisha [2.4K]3 years ago
8 0

Answer:

what region

Step-by-step explanation:

Vikentia [17]3 years ago
3 0

Answer:

56?

Step-by-step explanation:

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The Chang family and the Davis family each used their sprinklers last summer. The water output rate for the Chang family's sprin
denis-greek [22]

Answer:

The Chang family = 25 hours, The Davis  family = 35 hours

Step-by-step explanation:

The given information is as follow

The Chang family = 15L/h

The Davis family = 40L/h

Total time for both sprinklers = 60 hours

Total water output = 1775 L

From this information we can derive a set of simultaneous equations to help us find our answer.

We need to find the following information

The time for the Chang family, taken as t1

The time for the Davis family, taken as t2

From this we derive the following set of equations

1) t1 + t2 = 60 hours ----- <em>(This is derived from the total time for both sprinklers)</em>

2) 15(t1) + 40(t2) = 1775 ---- <em>(This is derived from total water output based on time for each sprinkler)</em>

<em />

Solving these simultaneously we get following equation

t1 = 60 - t2 - <em>equation 1</em>

15(t1) + 40(t2) = 1775 - <em>equation 2</em>

15 (60 - t2) + 40(t2) = 1775 - <em>equation 3 (combining equation 1 & equation 2)</em>

       900 - 15(t2) + 40(t2) = 1775   -------- solving the equation 3

            25(t2) = 1775 - 900

                 <u>t2 = 35</u>

                 <u>t1 = 25</u>

4 0
3 years ago
What happens to the mean of the data set {10, 2, 8, 9, 5, 2, 6} if the number 12 is added to the data set? A. The mean increases
Setler [38]

Answer:

C. The mean increases by 0.75.

Step-by-step explanation:

The mean of a data set is given by the sum of all its values, divided by the number of values.

Data set {10, 2, 8, 9, 5, 2, 6}

7 values

Sum: 10 + 2 + 8 + 9 + 5 + 2 + 6 = 42

Mean: 42/7 = 6

Adding number 12 to the data set

Now we have 8 values

The sum is 42 + 12 = 54

The mean is 54/8 = 6.75

This means that the mean increases by 0.75.

7 0
2 years ago
Read 2 more answers
Question is in the picture (surface area)
Marina CMI [18]

Answer:

Your answer is 62 square inches

Step-by-step explanation:

You can cross off 1 & 2, as they are too small.

Lets split this up.

(2*3)+(2*3)+(3*5)+(3*5)+(2*5)+(2*5)

2*3 + 2*3 = 12

3*5 + 3*5 = 30

2*5 + 2*5 = 20

30+20+12 = 62

7 0
2 years ago
20. what us the area of the figure:
Varvara68 [4.7K]
If the angle in B is 45º, that means the angle in A is also going to be 45º, considering it's a right triangle, so AC and BC are they have the same length.
Then using Pythagoras, you'll get that AC^{2} + BC^{2} equals AB^{2} .
Now, you know that AC=BC and that AB=24.
So you'll get 2AC^{2} =24^2 . You do the square root in both sides and you get that 2AC=24 and AC=12.

Now that you know that both AC and BC equal 12, you can find the area by just multiplying them and then diving them by 2. (The formula for the area of a triangle is half base multiplied by height, and in a right triangle, if a cathetus is the base, the other cathetus<span> will be the height)

And so the area is equal to 72.</span>
8 0
3 years ago
The vector ab has a magnitude of 20 units and is parallel to the<br> vector 4i + 3j.<br> find ab.
stepladder [879]

The vector ab has a magnitude of 20 units and is parallel to the

vector 4i + 3j. Hence, The vector AB is 16i + 12j.

<h3>How to find the vector?</h3>

If we have given a vector v of initial point A and terminal point B

v = ai + bj

then the components form as;

AB = xi + yj

Here, xi and yj are the components of the vector.

Given;

The vector ab has a magnitude of 20 units and is parallel to the

vector 4i + 3j.

magnitude

\sqrt{4^2 + 3^2} \\\\\sqrt{16 + 9} \\\\= 5

Unit vector in direction of resultant = (4i + 3j) / 5

Vector of magnitude 20 unit in direction of the resultant

= 20  x (4i + 3j) / 5

= 4 x (4i + 3j)

= 16i + 12j

Hence, The vector AB is 16i + 12j.

Learn more about vectors;

brainly.com/question/12500691

#SPJ1

7 0
1 year ago
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