3 years ago

PLEASE HELP!! WILL GIVE BRAINLEST!20 POINTS!!JUST PLEASE HELPPPP

Mathematics

2 answers:

pochemuha3 years ago

8 0

Answer:

77%

Step-by-step explanation:

astra-53 [7]3 years ago

3 0

Answer:

78%

Step-by-step explanation:

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12(80-x)=816 what does x equal?

AlexFokin [52]

One way to solve:
960-12x=816
144=12x
12=x
Another way to solve
80-x=68
x=12

3 0

4 years ago

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Which shape is both rectangle and a square?

mina [271]

Step-by-step explanation:

the rhombus is both rectangle and square

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3 years ago

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I really need help i’m going to fail so answer if you can ! <3

Volgvan

Answer:

110

Step-by-step explanation:

you place 30 in the place of X, and it becomes 4×30-10. in PEMDAS, multiplication goes first and 4×30=120. 120-10=110

8 0

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

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

4 0

3 years ago

Steps to answer -3(x+4)+15=6-4x

Mariana [72]

distribute| -3x-12+15 = 6-4x
simplify| -3x+3=6-4x
solve by getting X to one side| -3=1x
answer| X=-3

8 0

3 years ago