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Annette [7]
3 years ago
15

I NEED HELP ASAP, QUESTIONS IN ON THE IMAGE

Mathematics
1 answer:
Furkat [3]3 years ago
8 0

Answer:

i think 140 but im not so sure

Step-by-step explanation:

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Two cards are drawn from a standard deck without replacement. What is the probability that the first card is a spade and the sec
Verizon [17]

Answer:

The answer is 0.123.

Step-by-step explanation:

You want to find the intersection between P(Spade) and P(Red). Knowing that there's no replacement, the probability will be given by the formula:

⇒ P(Spade∩Red) = P(Spade)*P(Red/Spade)

⇒ P(Spade∩Red) = P(Red)*P(Spade/Red)

Either formula works, but I'm going to choose to work with the first formula.

Therefore:

P(Spade) = \frac{13}{52}

P(Red/Spade) =  \frac{26}{52-1}

So:

P(Spade∩Red) = \frac{13}{52}*\frac{26}{51}= \frac{13}{102} =  0.123

3 0
3 years ago
-7/9 x 144 vbnbvcrxecvbnbvtcrxercvb
Juli2301 [7.4K]
The first step to solving this expression is to reduce the numbers with 9.
-7 × 16
Now we need to multiply the two numbers together using the Rules of Signs for Multiplication. They state that multiplying a negative and a positive equals a negative: (-) × (+) - (-). Keeping this in mind,, when you multiply the two numbers together you should get -112.
Let me know if you have any further questions
:)
6 0
3 years ago
Use the confidence level and sample data to find a confidence interval for estimating the population mu. Round your answer to th
inysia [295]

Answer:

c. 9.5 lb < mu < 11.1 lb.

Step-by-step explanation:

Confidence interval can be stated as M±ME where

  • M is the sample mean (10.3)
  • ME is the margin of error

margin of error (ME) around the mean can be calculated using the formula

ME=\frac{z*s}{\sqrt{N} } where

  • z is the corresponding statistic in 95% confidence level (1.96)
  • s is the standard deviation of the sample (2.4)
  • N is the sample size (37)

Putting thesenumbers in the formula we get:

ME=\frac{1.96*2.4}{\sqrt{37} } ≈ 0.7733 ≈ 0.8

Then the 95% confidence interval would be 10.3 ± 0.8

7 0
3 years ago
Can yu plz answer this inequality 3&lt;1/2x+1
Aleks04 [339]
First you need to change the equation to 3 < x/2 + 1

then we can treat it like a normal equation.

subtract 1 from each side to get 2 < x/2

then multiply both sides by 2 to get rid of the fraction and we have

4 < x and we switch it around to get 

x > 4 as our answer! :)
5 0
3 years ago
Condense this logarithm to a single logarithm <br> 6log 5u
mina [271]

Answer:

log_5(u^6)

Step-by-step explanation:

According to log rules, log_a(b^n) = nlog_a(b), reversing this we get that log_5(u^6) is what you are looking for.

3 0
3 years ago
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