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dlinn [17]
3 years ago
5

A rectangle is 12 inches long and 7 inches wide. What is the area of the rectangle and square centimeters?

Mathematics
1 answer:
Airida [17]3 years ago
5 0

Answer:

85in^2

Step-by-step explanation:

12x7=84in^2

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−8x+5−2x−4+5x− when x=2
hodyreva [135]
<span>−8x+5−2x−4+5x
= -5x + 1
so when x = 2 then
</span>-5x + 1
= -5(2) + 1
= -9

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3 years ago
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Use a translation of(x,y) (x+2,y-3). What's the image of D(4,7) ​
lyudmila [28]

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(6,4)

Step-by-step explanation:

(4+2,7-3)=(6,4)

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2 years ago
Roseanne drew a circle with a radius of 20.2 cm. What was the approximate circumference of the circle if you use 3.14 for ?
Bezzdna [24]
So B will be the answer

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2 years ago
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jill has not yet studied the angle measurement requirements to form a triangle. She begins to draw side AB as a horizontal segme
Fiesta28 [93]

Answer:

a. 45° and 135

The non-horizontal rays of ∠ and ∠ will not intersect to form a triangle; the rays will be parallel to each  other.

b. 45° and 45°

The non-horizontal rays of ∠ and ∠ will intersect to form a triangle

c. 45° and 145°

The non-horizontal rays of ∠ and ∠ will not intersect to form a triangle.

Step-by-step explanation:

Hope this helps

8 0
2 years ago
Suppose it is found that a certain model of car sells y= -1.6(x-2)^2 + 4.8(x-2) + 16 cars per week, where x is the number of sho
Vilka [71]

Answer:

Approximately 4 shops would be the best number of shops which the car is sold, and the number of cars is 20.

Step-by-step explanation:

This is a quadratic function. Therefore, the first thing you need to do is assume some values for x, and then, calculate the value of y, (which would be the number of cars sold). In this way, you can do the graph.

Watch the following attachment, which is a document of excel, showing the graph and some values of x, that I assume

Now, even if you don't have the graph you can estimate the number of shops with the following expression of the summit:

X = -b / 2a

Where:

a: number that goes along with the x elevated.

b: number that goes along with the x, but without being elevated.

In this equation, the first thing we need to do, is rearrange it, that's because we have a (x-2) in the equation, and this could be really annoying.

First let's solve the (x-2)^2

(x-2)^2 = (x-2)(x-2) = x^2 - 2*2x + 2^2 = x^2 - 4x + 4

This is now multiplied by -1.6:

-1.6x^2 + 6.4x - 6.4

Now, multiply 4.8 by x-2:

4.8x - 9.6

Finally, let's arrange this:

-1.6x^2 + 6.4x - 6.4 + 4.8x - 9.6 + 16

-1.6x^2 + 11.2x - 6.4 - 9.6 + 16 = -1.6x^2 + 11.2x

This means that the graph do not have a "y" intercept, and the values of a and b are -1.6 and 11.2, therefore, we can estimate the best number of shops, calculating the summit of the graph (This is because s a quadratic function, and the graph is a parable, and the minimum or maximum point of the graph is reached in the summit)

Summit has X and Y values, the x value is (see formula above):

X = -11.2 / 2 * -1.6 = 3.5

and for the y value, just replace the X value in the equation:

Y = -1.6(3.5)^2 + 11.2(3.5) = -19.6 + 39.2 = 19.6

With this we can conclude that the best number of shops that sells this model of car, is 4 (rounded) and they all sell 20 cars (also rounded). See the graph below in the attachment.

Download xlsx
4 0
3 years ago
Read 2 more answers
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