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3 years ago

ASAP!!!!!!!!! PLEASE help me with this question! This is really urgent! No nonsense answers please.

Mathematics

1 answer:

Cloud [144]3 years ago

7 0

<h3>Answer: C) increase from 45 degrees to 50 degrees</h3>

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

Explanation:

Let's calculate the angle B based off the arcs CDF and GHJ

B = (far arc - near arc)/2

B = (arc CDF - arc GHJ)/2

B = (130 - 40)/2

B = 90/2

B = 45

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Now let's change GHJ to 30 degrees, while keeping the other arc the same.

B = (far arc - near arc)/2

B = (arc CDF - arc GHJ)/2

B = (130 - 30)/2

B = 100/2

B = 50

Angle B has increased from 45 degrees to 50 degrees.

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Solve for all possible values of x. square root of the quantity x minus 8 end quantity minus 3 equals 1 x = −4 x = 8 x = 12 x =

Katen [24]

Answer:

Hello i was going to answer this but someone else answered it and i didnt want to write that much lol.

Step-by-step explanation:

brainly.com/question/13457391 hope it helps

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3 years ago

I need helping answering 15. I need to create a table and graph the function.

Alekssandra [29.7K]

ANSWER and EXPLANATION

We want to order the functions from widest to narrowest:

$\begin{gathered} y=3x^2 \\ y=2x^2 \\ y=4x^2 \end{gathered}$

To do this, we have to plot the graphs of the functions by using a table of values.

Let us find the values of the functions for values of x = -2, 0, 2

For the first function:

$\begin{gathered} y=3x^2 \\ \Rightarrow x=-2: \\ y=3(-2)^2=3*4 \\ y=12 \\ \Rightarrow x=0: \\ y=3(0)^2=3*0 \\ y=0 \\ \Rightarrow x=2: \\ y=3(2)^2=3*4 \\ y=12 \end{gathered}$

Hence, its table is:

For the second function:

$\begin{gathered} y=2x^2 \\ \Rightarrow x=-2: \\ y=2(-2)^2=2*4 \\ y=8 \\ \Rightarrow x=0: \\ y=2(0)^2=2*0 \\ y=0 \\ \Rightarrow x=2: \\ y=2(2)^2=2*4 \\ y=8 \end{gathered}$

Hence, its table is:

For the third function:

$\begin{gathered} y=4x^2 \\ \Rightarrow x=-2: \\ y=4\left(-2\right)^2=4*4 \\ y=16 \\ \Rightarrow x=0: \\ y=4(0)^2=4*0 \\ y=0 \\ \Rightarrow x=2: \\ y=4(2)^2=4*4 \\ y=16 \end{gathered}$

Hence, its table is:

Now, let us plot the graphs of the functions:

Therefore, from the graph, we see that the order of the functions from widest to narrowest is:

$y=2x^2;y=3x^2;y=4x^2$

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1 year ago

The total number of credit hours that remain for a student to earn a degree after s semesters have been completed successfully i

Scilla [17]

Answer:

The remaining credit hours decrease by 9 for each semester completed.

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3 years ago

today Ian wants to run less than 7/12 miles write a fraction with a denominator of 4 to represent a distance that is less than 7

hodyreva [135]

The answer is 1/4 because 7/12 is larger than 1/2 but 1/4 is 2x smaller

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3 years ago

Read 2 more answers

An open box with a square base is to have a volume of 4000in3. Find the length of the side of the square base that would result

Elina [12.6K]

Answer:

I did this quickly and don't have the time to check. Please review carefully.

Length of the side of a square base to provide a volume of 4000 in^3 with the minimum material to construct the entire box. is 6 in. The dimensions for this box would be (6 in) by (6 in) by 111.1 in.

Step-by-step explanation:

The volume of a square box is given by

Volume(V) = L*W*H,

where L is length, W is width, and H is height.

Since the base is square, W = L, so we can rewrite the volume equation as:

V = L*W*H

V = L*L*H

Volume = L^2H

The area of the box surface is the sum of all the sides:

Top and Bottom: 2*(L*W), or 2 (W^2)

2 Sides: 2*(W*H), or 2(W^2)

2 other sides: 2*(L*H)

The total surface area is

Area = 2*(L*W) + 2*(W*H) + 2*(L*H)

Since W=L, we can rewrite this equation as:

Area = 2*(L*L) + 2*(L*H) + 2*(L*H)

<u>Total Surface Area = 2L^2 + 4LH</u>

The target volume is 4000 in^3

We know that Volume = L^2H from above.

4000 in^3 = L^2H

we can rewrite this as:

H = 4000/L^2

Substitute this value of H into <u>Total Surface Area = 2L^2 + 4LH</u>

Total Surface Area = 2L^2 + 4L(4000/L^2)

Total Surface Area = 2L^2 + (1000/L)

We want to minimize total surface are, so we can either plot this function and look for the minimum, or we can take the first derivative and set it equal to zero (the first derivative tells us the slope of the line at any point. We want the point where the slope is zero, where it changes direction). I will plot the function.

<u>Plot: </u> See attached graph.

I set the above equation to the format: y = 2x^2 + (1000/x), where y is the total surface area and x is the box length.

I see a minimum at (6.2,230). This corresponds to a box length of 6.2 in and a surface area of 230 in^2.

7 0

2 years ago