3 years ago

2x - 15 Help meeeeee

Mathematics

1 answer:

Illusion [34]3 years ago

7 0

Is this the whole equation?

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BigorU [14]

The slope is 2 and the y-intercept is -1

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3 years ago

A student randomly guesses on 10 true/false questions. use the binomial model to determine the probability that the student gets

lana [24]

Answer:

$P(5)=\frac{63}{256}$

Step-by-step explanation:

we are given

A student randomly guesses on 10 true/false questions

so,

$n=10$

there only true and false

so, probability getting true question is

$p=\frac{1}{2}$

so, probability getting false question is

$q=\frac{1}{2}$

the student gets 5 out of 10 questions right

so,

r=5

we can use binomial probability formula

$P(r)=\frac{n!}{r!(n-r)!} p^rq^{n-r}$

now, we can plug values

$P(5)=\frac{10!}{5!(10-5)!} (\frac{1}{2})^5(\frac{1}{2})^{10-5}$

we can simplify it

and we get

$P(5)=\frac{63}{256}$

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3 years ago

Three out of every 5 teachers at Jefferson High School are men. How many of Jefferson’s 40 teachers are men ? Show work

Blizzard [7]

Answer: 24

Step-by-step explanation:

3 divide by 5 equalls 0.6. 0.6 times 40 equalls 24.

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3 years ago

3/4x-5/4=1/3x<br> Explain your answer

Sonbull [250]

Answer:

Step-by-step explanation:

(3/4)x-(5/4)=(1/3)x

(3/4)x-(1/3)x=(5/4)

x((3/4)-(1/3))=(5/4)

(5/12)x=(5/4)

x=(5/4)/(5/12)

x=3

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4 years ago

What is the simplest form of the expression (14.2a + 9.8b) – (13.1b – 0.2a) – (3.7a + 4.8b)

finlep [7]

Answer:

10.7a-8.1b

Step-by-step explanation:

7 0

3 years ago

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