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3 years ago

What is the value of the expression 5x − y when x = 3 and y = 1? 14 10 7 0

Mathematics

1 answer:

12345 [234]3 years ago

5 0

5x-y
=5(3)-1
=15-1
=14

Therefore, the answer is 14.

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4+2(7)= <br><br> 62+8×3= <br><br> 3(2+5)−5(3)+8= <br><br> 24−6+12÷2×3=

Temka [501]

4+2(7)= 18

62+8x3= 86

3(2+5)-5(3)+8= 14

24-6+12÷2x3= 36

Hope this helps you! :D

3 0

3 years ago

The variance Var(x) for the binomial distribution is given by equation :

aliina [53]

Answer: d. np(1 - p).

Step-by-step explanation:

Let x be any binomial variable which represents the number of success such that $X\sim B(n, p)$ , where n is the sample size or the total number of trials and p is the probability of getting success in each trial .

Then, the mean E(x) and the variance Var(x) for the binomial distribution is given by equation :

$E(x)=\mu=np$

$Var (x)=\sigma^2=np(1-p)$

where n is the sample size or the total number of trials and p is the probability of getting success in each trial .

Therefore , the correct option is option d. np(1 - p) .

6 0

2 years ago

An architect is standing 250 feet from the base of a building and would like to know the height of the building. If he measures

GREYUIT [131]

see the figure below to better understand the problem

we have that

$\begin{gathered} tan55^o=\frac{h}{250}---->\text{ by TOA} \\ \\ solve\text{ for h} \\ h=250*tan55^o \\ h=357.0\text{ ft} \end{gathered}$ <h2>The answer is 357.0 feet</h2>

8 0

6 months ago

Pls someone answer this...

Sergio039 [100]

Answer:

p=10

Step-by-step explanation:

3p+10+5p=90

8p+10=90

8p=80

p=10

5 0

2 years ago

Read 2 more answers

There are 7 more runners than walkers. If there are 11 walkers, how many runners are there?

Pavel [41]

Answer:18 runners

Step-by-step explanation:

7+11=18

7 0

2 years ago