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3 years ago

Please help me ASAP

Mathematics

2 answers:

Kaylis [27]3 years ago

4 0

All you have to do for this is plug in each coordinate point to the function. Ex. (0,2). Plug in 0 to the “x” part of the function, and solve that side; you will get 2. Then you plug in 2 in this case for “y”. You will end up with 2<2 which is a FALSE statement. And you keep doing that until you get a TRUE statement.

Phantasy [73]3 years ago

4 0

<h3>Answer: Choice C. (0,0) </h3>

=====================================================

Explanation:

This is the only point in the shaded region. The other points are either on the boundary line or outside the shaded region. Points on the boundary do not count because of the dashed line. The dashed line is due to no presence of an "or equal to" as part of the inequality sign.

See the diagram below.

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A nonvisual approach will have you plug each of the coordinates into the given inequality.

For instance, choice A has x = 0 and y = 2 pair up which plug in to get

y < (-2/3)x + 2

2 < (-2/3)*0 + 2

2 < 2

which is false, so that's why choice A is not the answer. You should find that choices B and D are false too. Only choice C is true because

y < (-2/3)x + 2

0 < (-2/3)*0 + 2

0 < 2

which confirms the answer we got when we used the visual approach.

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alexandr1967 [171]

Assuming you meant to write: "xy + zy"
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y(x+z).
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4 0

3 years ago

What is the circumference and area of a circle with r=7., to the nearest of a unit ?

astra-53 [7]

R = 7

Solving for the circumference first,
C = 2(π)(r)
C = 2(π)(7)
C = 14(π)
C = 43.96
You would need to round up to 44 then.

The area of a circle is
A = π(r²)
A = π(7²)
A = π(49)
A = 153.86
You would round up to 154.

Circumference = 44
Area = 154

7 0

3 years ago

What is the equation for y=2x-1 when the slope is doubled

coldgirl [10]

Answer:

y = mx + b

y = 2x - 1

4 0

4 years ago

PLZ HELPPPP HElPPPPPPPPPPP HELPPPP ME

qwelly [4]

Answer:#1.

A=the amount of miles traveled and gallons of fuel

B=Y is the first one it is the amount of miles traveled

C=30x 150

#2.

A=3x 602

B=height of tree inches

C= the number of months

Step-by-step explanation:

i have already had this question

3 0

3 years ago

A candy box is made from a piece of cardboard that measures 15 by 9 inches. Squares of equal size will be cut out of each corner

Valentin [98]

Answer:

1.82 inches

Step-by-step explanation:

Let the size of square piece cut from the corner is d.

So, the length of the box is 15 - 2y

width of the box is 9 - 2y

height of the box is d.

Volume of the box

Volume = length x width x height

V = (15 - 2y)(9 - 2y)y

V = 4y³ - 48y² + 135y

Differentiate with respect to y.

$\frac{dV}{dy}=12y^{2}-96y+135$

It is equal to zero for maxima and minima

$12y^{2}-96y+135=0$

$y=\frac{96\pm \sqrt{96^{2}-4\times 12\times 135}}{24}$

So, y = 1.82 in or 6.2 in

Now

$\frac{d^{2}{V}}{dy^{2}}=24y-96$

For y = 1.82 in, it is negative

and for y = 6.2 in, it is positive

So, the volume of the box is maximum if the height of the box is 1.82 inch.

Thus, the size of the square cut from each of the corner is 1.82 inches.

3 0

4 years ago