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Hunter-Best [27]
3 years ago
5

The amount of red blood cells in a blood sample is equal to the total amount in the sample minus the amount of plasma. What is t

he total amount of blood drawn? Red blood cells = 45% Plasma = 5.5 mL Please help 
Mathematics
1 answer:
Nana76 [90]3 years ago
4 0
In this case, red blood cells <span>amount in the sample minus the amount of plasma. Red blood cells is 45% of total blood and plasma is 5.5ml. You need to find how many ml is 1% of blood. Then the equation would be

Red blood cells = total sample - amount of plasma
45%= 100% - 5.5ml
100%-45% =5.5ml
55%=5.5ml
1%= 0.1ml

After you found 1%=0.1ml , you can find out red blood cells volume or total sample volume.
Red blood cells volume = 45% x 0.1ml/%= 4.5ml
Total sample volume =100% x 0.1ml/% = 10ml</span>
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A triangular lot has sides of 215m, 185m, and 125m. Find the measures of the angles at its corners
Vlada [557]

Answer:

The measures of the angles at its corners are 59.1\°,35.4\°,85.5\°

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

Find the measure of angle A

Applying the law of cosines

185^{2}= 215^{2}+125^{2}-2(215)(125)cos(A)

2(215)(125)cos(A)= 215^{2}+125^{2}-185^{2}

cos(A)= [215^{2}+125^{2}-185^{2}]/(2(215)(125))cos(A)=0.513953

A=arccos(0.513953)=59.1\°

step 2

Find the measure of angle B

Applying the law of cosines

125^{2}= 215^{2}+185^{2}-2(215)(185)cos(B)

2(215)(185)cos(B)= 215^{2}+185^{2}-125^{2}

cos(B)= [215^{2}+185^{2}-125^{2}]/(2(215)(185))cos(B)=0.81489

B=arccos(0.81489)=35.4\°

step 3

Find the measure of angle C

Applying the law of cosines

215^{2}= 125^{2}+185^{2}-2(125)(185)cos(C)

2(125)(185)cos(C)= 125^{2}+185^{2}-215^{2}

cos(C)= [125^{2}+185^{2}-215^{2}]/(2(125)(185))cos(C)=0.0784

C=arccos(0.0784)=85.5\°

3 0
3 years ago
A piggy bank contains $5.60 in nickels and dimes. The number of nickels is 8 less than 3 times the dimes. How many nickels and d
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8 0
3 years ago
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Select the correct answer.
Marina CMI [18]

The concept of historical cost in accounting involves valuing business resources at their purchase price. This is further explained below.

<h3>What is the historical cost?</h3>

Generally, historical cost is a value of measure used in accounting that records the value of an asset on the balance sheet at its original cost when purchased by the firm.

In conclusion, valuing business resources at their purchase price is what historical cost is about.

Read more about Business

brainly.com/question/10295065

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5 0
2 years ago
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There are 6 time zones in the United States. The eastern part of the U.S., including New York City, is in the Eastern Time Zone.
VashaNatasha [74]
It’s morning in California
6 0
3 years ago
Honestly, I'm trying my best to solve this but my Math XL is being so rude. ​
Valentin [98]
<h3>Answer:  19</h3>

==============================================================

Explanation:

T is the midpoint of PQ, which means T splits PQ into two equal parts. Those parts being PT and TQ.

Set them equal to each other and solve for x.

PT = TQ

3x+7 = 7x-9

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x = -16/(-4)

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So,

PT = 3x+7 = 3*4+7 = 19

TQ = 7x-9 = 7*4-9 = 19

Both PT and TQ are 19 units long to help confirm the answer.

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