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Oduvanchick [21]
3 years ago
6

All my smart people​ click here

Mathematics
1 answer:
harina [27]3 years ago
8 0
Okay, I'm here for ya!
What do you need help with? It is correct "If you burn [...] 0.02 mols of propane 44kj of energy [...] released"

What's the problem here?

Edit: "For each gram of propane burned, 50 kJ of energy is released" maybe?
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Un cono ha l'area laterale di 255 pigreco cm^2, l'apotema di 17 cm e pesa 900 pigreco g. Calcola il peso specifico del materiale
valkas [14]

Answer:

The specific weight is 1.5\frac{g}{cm^{3}}

Step-by-step explanation:

The question in English

A cone has a lateral area of 255 pi cm^2, an apothem of 17 cm and weighs 900 pi g. It calculates the specific weight of the material of which it is composed

step 1

Find the radius of the cone

we know that

The lateral area of a cone is equal to

LA=\pi rl

we have

LA=255\pi\ cm^{2}

l=17\ cm

substitute the values

255\pi=\pi r(17)

Simplify

255=r(17)

r=255/(17)=15\ cm

step 2

Find the height of the cone

Applying the Pythagoras Theorem

l^{2} =r^{2} +h^{2}

substitute the values and solve for h

17^{2} =15^{2} +h^{2}

h^{2}=17^{2}-15^{2}

h^{2}=64

h=8\ cm

step 3

Find the volume of the cone

The volume of the cone is equal to

V=\frac{1}{3}\pi r^{2}h

substitute the values

V=\frac{1}{3}\pi (15)^{2}(8)

V=600\pi\ cm^{3}

step 4

Find the specific weight

Divide the mass by the volume

\frac{900\pi }{600\pi}=1.5\frac{g}{cm^{3}}

4 0
3 years ago
Which of the following rational functions is graphed below?
jolli1 [7]

Because we have a vertical asymptote at x = -1, we conclude that the correct option is C.. Which of the following rational functions is graphed below? In the graph, we can see that we have a vertical asymptote at x = -1.. …

8 0
8 months ago
6Of
marysya [2.9K]

Answer:

I believe the answer is the system has one solution. Both lines have the same y-intercept. And the solution is the intersection of the 2 lines.

4 0
3 years ago
the following data respresents the number of text message received in a day by 10 students. What was the mean number of text rec
rjkz [21]
43+37+35+30+41+23+33+31+16+21=310
310/10=31
5 0
2 years ago
choose a number between 67 and 113 that is a multiple of 4, 8, and 16 . Write all the numbers that she could choose. If there is
Allushta [10]
2 is a multiple of 4, so anything that's a multiple of 4 will automatically be a multiple of 2 so 3 x 4 = 12 so multiples of 12 that are between 67 and 113 are...? 12 x 6 = 72 12 x 7 = 84 12 x 8 = 96 12 x 9 = 108 <span> 72 or 84 or96 or 108 all are divisible by 2,3 and 4 all fall between 67 and 112</span>
6 0
3 years ago
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