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beks73 [17]
3 years ago
7

Can someone help find what C is?

Mathematics
2 answers:
timofeeve [1]3 years ago
8 0

Answer:

the first one is 10

the second one is 12.65

Step-by-step explanation:

hope this will help u

eduard3 years ago
4 0

Hello there!

Here, we want to use the Pythagorean Theorem: a^{2} + b^{2} = c^{2}.

For problem number 7, we plug 6 and 8 in for <em>a</em> and <em>b</em>. Like this:

6^{2} + 8^{2} = c^{2}

Now we solve. 6^{2} is 36. 8^{2} is 64.

64 + 36 = 100

Then, we take the square root of 100 to get <em>c</em>.

\sqrt{100} = 10

(There's something special about this triangle. If you want I'll tell you about it in the comments.)

For problem number 8, we do the same exact thing.

4^{2} + 12^{2} = c^{2}

4^{2} = 16  and  12^{2} = 144

144 + 16 = 160

\sqrt{160} = 8\sqrt{10}

I hope this helps!!

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Jlenok [28]
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So, to combine them:
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" -w + 4w + 12 " ; 
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6 0
3 years ago
A waffle cone has a volume of 31.254 cubic centimeters and a radius of
arlik [135]

Answer:

4.78 cm

Step-by-step explanation:

The formula for the volume of a cone of radius r and height h is

V = (1/3)πr²h.  Here, V = 31.254 cm³ and r = 2.5 cm.  

We begin by solving V = (1/3)πr²h for the unknown height, h:

         31.254 cm³              3(31.254 cm³)            93.762 cm³

h = ------------------------  =  --------------------------  =  --------------------  ≈  4.78 cm

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5 0
3 years ago
During a recent drought, a water utility in a certain town sampled 100 residential water bills and found that 80 of the residenc
Anastasy [175]

Answer: 0.893

Step-by-step explanation:

Given : Sample size of residential water bills: n=100

Number of residences had reduced their water consumption over that of the previous year = 80

Then sample proportion: \hat{p}=\dfrac{80}{100}=0.8

Critical value for 98% confidence= z_{\alpha/2}=2.326

The upper bound for confidence interval for population proportion :

\hat{p}+ z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

=0.8+ (2.326)\sqrt{\dfrac{0.8(1-0.8)}{100}}\\\\=0.8+0.09304=0.89304\approx0.893

Hence, the 98% upper confidence bound for the proportion of residences that reduced their water consumption.=0.893

4 0
3 years ago
The function rule C = 10n + 26 relates the number of people n who attend a small concert to the cost in dollars C of the concert
Nezavi [6.7K]
This is the concept of functions. We are required to calculate for the total cost of tickets if 27, 39 and 43 people attended a concert whose cost was represented by C=10n+26.
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When n=39
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When n=43
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4 0
3 years ago
Y is inversely proportional to the cube of x. If Y = 3 when x = 2, find Y, when x is 3. Write a proportion. Solve for y. Show wo
Wittaler [7]
<span>"Y is inversely proportional to the cube of x" translates to Y = kx</span>³ where k is unknown constant. We need to solve for k.

So we have Y = 3 and x = 2. Plug in and we get 3 = k2³ = 8k

So k = 3/8

Now we can solve for Y when x = 3

Y = (3/8)3³ = (3/8)27 = 81 / 8

Final answer: 81 / 8
8 0
3 years ago
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