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Rus_ich [418]
3 years ago
5

An architectural engineer is designing a parabolic dome that will be 200 feet in diameter with a maximum height of 50 feet. Find

the equation of the cross–sectional parabola of the dome.
Mathematics
2 answers:
Advocard [28]3 years ago
6 0
For the answer to the question above, 
diameter 200 means x-intercepts - 100 and 100 
<span>maximum height = 50 means y-vertex = 50 </span>

<span>y = ax^2 +c </span>
<span>c=50 </span>

<span>y =ax^2 + 50 </span>
<span>and </span>
<span>ax^2 + 50 = 0 for x = + 100 and x = -100 </span>

<span>10000a + 50 = 0 </span>

<span>a = - 50/10000 </span>
<span>a = -5/1000 = - 0.005 </span>

<span>my answer is </span>

<span>y = - 0.005 x^2 + 50 </span>
kicyunya [14]3 years ago
3 0

Answer:

B for plato

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
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The function with a rate of change of 4/5 that has a value of 10 at x=10
Aleks [24]

Answer:

y = \frac{4}{5} x + 2

Step-by-step explanation:

Assuming you require the equation of the function.

The slope m is a measure of the rate of change of the function.

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = \frac{4}{5} , thus

y = \frac{4}{5} x + c ← is the partial equation

To find c substitute (10, 10) into the partial equation

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7 0
3 years ago
Which is another way to check the sum of 104+34+228+877?
Alex787 [66]
The answer is digit sum method.

Digit sum method is method used to check the sum of sum numbers. If the sum of all of the digits of numbers is equal to the sum of all of the digits of the total sum, then the arithmetic process was correct.

We need to check the sum of <span>104+34+228+877:
</span>104 + 34 + 228 + 877 = 1243

Let's first summarize the digits of individual numbers:
104 *** 1 + 0 + 4 = 5
34 *** 3 + 4 = 7
228 *** 2 + 2 + 8 = 12 *** 1 + 2 = 3
877 *** 8 + 7 + 7 = 22 *** 2 + 2 = 4

Now, let's sum these sums:
5 + 7 + 3 + 4 = 19 *** 1 + 9 = 10 *** 1 + 0 = <u><em>1</em></u>

Then, let's summarize the digits of the total sum:
1243 *** 1 + 2 + 4 + 3 = 10 *** 1 + 0 = <u><em>1</em></u>

Since the sums of the digits on the both sides of equation is 1, than the arithmetic process was correct and the sum of <span>104 + 34 + 228 + 877 is really 1243.</span>

7 0
4 years ago
Multiply 2/3 by 42,and then multiply that product by 10​<br><br> Need to see the steps.
Zinaida [17]

2/3 × 42 = 28 × = 280 is ur answer

8 0
3 years ago
I need help badly due today
iris [78.8K]

Answer:

Solid A

Step-by-step explanation:

8 0
3 years ago
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