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3 years ago

Rob wants to draw a sector with half the arc length of the sector shown. Which method will work?

Mathematics

1 answer:

Fantom [35]3 years ago

7 0

Answer: Multiply the radius,r, by 2. Divide the angle measure, x, by 4.

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A mixture of compounds X and Y in a 0.100-cm cell had an absorbance of 0.215 at 272 nm and 0.191 at 327 nm. Find [X] and [Y] in

Oksi-84 [34.3K]

Answer: The concentration of X is $7.13582\times 10^{-6}$ and the concentration of Y is $2.53159\times 10^{-5}$ .

Step-by-step explanation:

Since we have given that

At 272 nm, absorbance = 0.215

At 327 nm, absorbance = 0.191

As we have given that

Compound X Compound Y

272 16400 3870

327 3990 6420

So, our equations becomes

$16400C_1+3870c_2=0.215\\\\3990C_1+6420C_2=0.191$

By solving these two equations, we get that

$C_1=7.13582\times 10^{-6}\\\\C_2=2.53159\times 10^{-5}$

Hence, the concentration of X is $7.13582\times 10^{-6}$ and the concentration of Y is $2.53159\times 10^{-5}$ .

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3 years ago

What is the probability of randomly selecting a day of the week and not getting Monday?

mrs_skeptik [129]

Days in a week n(S)=7

DAYS to not getting monday n(M)=6

probability P(M)=n(M)/n(S)

=6/7(ans)

6 0

2 years ago

The steps for solving the equation 2x - 3 = 7 are listed below:

goblinko [34]

You are inversing for subtraction which is addition so D

3 0

3 years ago

Solve for n

malfutka [58]

<span>(5 2/3+8 1/4)+9 3/4=n+18
</span><span>5 2/3+8 1/4+9 3/4=n+18
</span>5 2/3 + 18 = n + 18 | - 18
5 2/3 = n

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2 years ago

Read 2 more answers

1 1/3 * 1 3/4 please help me with this

worty [1.4K]

Answer:

29/25

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers