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3 years ago

15

Yo help me real quick?

1 answer:

yaroslaw [1]3 years ago

7 0

Answer:

1,2 and 6

Step-by-step explanation:

pie symbol

2/3

0.333333....

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How do you do 3b+7.1=2.5b+11.5

bonufazy [111]

<span>3b+7.1=2.5b+11.5
</span>
First, you'd take 2.5b and subtract it from 3b

3b-2.5b+7.1=11.5

Simplify:

.5b+7.1=11.5

then, you would take 7.1, and since it is positive, subtract it from 11.5

.5b=11.5-7.1

Simplify:

.5b=4.4

Lastly, you'd take 4.4 and divide it by .5, leaving the unknown factor alone.

b=4.4/.5

Final answer:

b=8.8

5 0

4 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

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

4 0

3 years ago

Evaluate 4/3(4 1/5 + x) ÷ 5/2y when x = 3/2 and y = 15

MissTica

So what u do (-72828282)+(-7382828)=(-73838)+n=(-839288n)

8 0

3 years ago

What is the slope of the line that contains the points (-2,5) and (6, -3)?

mel-nik [20]

Answer:

-1

Step-by-step explanation:

Attached is a picture of slope formula:

1) Apply slope formula given two points:

(5--3)/(-2-6)

2) Simplify:

8/-8

3) Divide:

-1

3 0

3 years ago

Read 2 more answers

If point Cis between points A and B, then AC + __ = AB.<br> A. ABC<br> B. CA<br> C. BC<br> D. AB

VashaNatasha [74]

I think it’s C. I also just posted a question so if anyone could answer or look at the comments that would be AMAZING

6 0

3 years ago