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3 years ago

Please help me

Mathematics

1 answer:

Finger [1]3 years ago

7 0

Answer:

am not sure but if u want to know says at the comment

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X + 37 x + 67 90 104 14 -14 -7°

natulia [17]

It would be 104? I don’t understand the question but I guessing you’re adding

8 0

3 years ago

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 $2.53159\times 10^{-5}$ .

5 0

4 years ago

"John and two friends rent a canoe at a park. Each person much rent a life jacket. If the bill for the rental of the canoe and l

Slav-nsk [51]

I would need to know the amount of $ the rental life jackets and canoe are.

6 0

3 years ago

What is 27,430,000 as a scientific notation

MAVERICK [17]

Answer:

2.743 × 10^7

Step-by-step explanation:

The reason as to why 10 is to the 7th power is because the number that you turn into scientific notation (27430000), needs to be in ones form. Which is 7 decimal places away.

7 0

3 years ago

PLS HELP!! THIS IS WORTH 160 PTS!!(PLUS I WILL MARK BRAINIEST!)

valina [46]

Answer:

B) What is your height measured to the nearest inch?

Explanation:

A statistical question can be answered by collecting data from various people which varies.

Here Look For the Question's which may vary person to person.

A) Assuming 6th graders must have same period and time schedule.
B) Height in school of 6th graders can vary person to person.
C) There are total 11 letters and doesn't vary. it's exactly 11 letters.
D) The audience are from the same school.

7 0

2 years ago

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