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vredina [299]
3 years ago
13

Kira, Sam, and Josh sent a total of 85 text messages during the weekend. Sam sent 2 times as many messages as Josh. Kira sent 5

more messages than Josh.
How many messages did they each send?
Mathematics
1 answer:
vladimir1956 [14]3 years ago
5 0

Answer:

Josh: 20 messages

Kira: 25 messages

Sam: 40 messages

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Find the value of X<br><img src="https://tex.z-dn.net/?f=2x%20%3D%20%20%5Cfrac%7B74%7D%7B2%7D%20%20%20-%2037" id="TexFormula1" t
zubka84 [21]

The value of  x from the expression is 2

<h3>Expression and equation </h3>

Given the expression

2x = 74/2 - 37


We are to calculate the value of  x from the expression

2x = 37 - 37

Since 37 - 37 = 0

2x = 0

Divide both sides by 2:

2x/2 = 0/2

x = 0

Hence the value of  x from the expression is 2

Learn more on expression here: brainly.com/question/22048677

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3 years ago
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2+2=2x+2<br> what is the answer?
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2+2=2x+2
-2 to both sides
2=2x
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X=1
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Solve the equation:<br> - 6n = 2 3/4
Elena-2011 [213]

Answer:

n= 11/24

Step-by-step explanation:

hope it helps

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Why does the term angle need to be defined prior to defining perpendicular lines?
igor_vitrenko [27]

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a slitter assembly contains 48 blades five blades are selected at random and evaluated each day for sharpness if any dull blade
son4ous [18]

Answer:

P(at least 1 dull blade)=0.7068

Step-by-step explanation:

I hope this helps.

This is what it's called dependent event probability, with the added condition that at least 1 out of 5 blades picked is dull, because from your selection of 5, you only need one defective to decide on replacing all.

So if you look at this from another perspective, you have only one event that makes it so you don't change the blades: that 5 out 5 blades picked are sharp. You also know that the probability of changing the blades plus the probability of not changing them is equal to 100%, because that involves all the events possible.

P(at least 1 dull blade out of 5)+Probability(no dull blades out of 5)=1

P(at least 1 dull blade)=1-P(no dull blades)

But the event of picking one blade is dependent of the previous picking, meaning there is no chance of picking the same blade twice.

So you have 38/48 on getting a sharp one on your first pick, then 37/47 (since you remove 1 sharp from the possibilities, and 1 from the whole lot), and so on.

Also since are consecutive events, you need to multiply the events.

The probability that the assembly is replaced the first day is:

P(at least 1 dull blade)=1-P(no dull blades)

P(at least 1 dull blade)=1-(\frac{38}{48}* \frac{37}{47} *\frac{36}{46}*\frac{35}{45}*\frac{34}{44})

P(at least 1 dull blade)=1-0.2931

P(at least 1 dull blade)=0.7068

5 0
3 years ago
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