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3 years ago

Which substance is detected by a flame test?

Mathematics

2 answers:

Neko [114]3 years ago

8 0

I believe the correct answer is C: gas

QveST [7]3 years ago

7 0

D. metal
Different metals give the flame different colors, giving it a flame test, would identify the presence of a metal.

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Help!?! I have no clue how to solve it :/

Svetllana [295]

3! (Three factorial) is the same as 3 • 2 • 1. So 3! = 6

3 0

2 years ago

Suppose y varies directly with x, and y = 24 when x = 8. What is the value of y when x = 10?

Solnce55 [7]

First, you want to set up a proportion.

8/24 = 10/y

Cross multiply to get

240 = 8y, then divide 8 from both sides to get y = 30.

6 0

3 years ago

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Drag each tile to the correct box. Arrange the angles in increasing order of their cosines.

inna [77]

Answer:

$\frac{3\pi}{4}$

Step-by-step explanation:

we are given different angles

we can see that each angles have different denominators

so, firstly we will find common denominators

denominators are 1 , 2,3,4,6

so, LCD will be 12

now, we will make denominator of all terms 12

$\frac{3\pi}{4} =\frac{3\pi\times 3}{4\times 3}=\frac{9\pi}{12}$

$\pi =\frac{\pi\times 12}{1\times 12}=\frac{12\pi}{12}$

$\frac{7\pi}{6} =\frac{7\pi\times 2}{6\times 2}=\frac{14\pi}{12}$

$\frac{5\pi}{3} =\frac{5\pi\times 4}{3\times 4}=\frac{20\pi}{12}$

$\frac{7\pi}{4} =\frac{7\pi\times 3}{4\times 3}=\frac{21\pi}{12}$

$\frac{4\pi}{3} =\frac{4\pi\times 4}{3\times 4}=\frac{16\pi}{12}$

$\frac{3\pi}{2} =\frac{3\pi\times 6}{2\times 6}=\frac{18\pi}{12}$

$2\pi =\frac{2\pi\times 12}{1\times 12}=\frac{24\pi}{12}$

we can see that denominators are same

so, we can arrange it according to numerators as

$\frac{9\pi}{12}$

we can replace values

and we get order as

$\frac{3\pi}{4}$

8 0

3 years ago

Read 2 more answers

Plzzzz help I’ll name brainlist

siniylev [52]

Answer:

75 inches

Step-by-step explanation:

15*SF 5= 75

8 0

3 years ago

The formula for the volume of a cylinder is V = arh.

olga_2 [115]

Answer:

Step-by-step explanation:

You would divide it by pie r squared to get h then flip the equation around so it would be

h= v/ pie r squared

3 0

3 years ago

Read 2 more answers