Complete the comparison : 27> ?

(6a+11) (2a + 83) A) 21 B) 17 C) 18 D) 20 (20points)

Neporo4naja [7]

(6a+11)=(2a+83)
6a+11=2a+83
-11 -11
6a=2a+72
-2a -2a
4a=72
4/4a=72/4
a=18
The solution is 18

6 0

3 years ago

(? x 3) - 3 = 15 help pls and i need the steps :/

marishachu [46]

Answer:

4

Step-by-step explanation:

Lets make $x$ be the ? in the equation.

That becomes ( $x$ x 3) - 3 = 15.

First you have to add 3 on both sides. After doing that it gets to ( $x$ x 3) = 15 - 3.

Then you simplify it to 3 $x$ = 12.

Now you divide 3 on both sides. That gets to $x$ = 4 after doing it.

Hope this helped! If not, please let me know! <3

3 0

3 years ago

7 inches by 4 inches. the frame is created from 10 square inches of framing material

coldgirl [10]

74 inches whskdnsaskfis

5 0

3 years ago

Simplify <img src="https://tex.z-dn.net/?f=y%5E%7B-3%7D" id="TexFormula1" title="y^{-3}" alt="y^{-3}" align="absmiddle" class="l

Xelga [282]

Answer:

$\frac{1}{y^{3} }$

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

If 90 percent of automobiles in Orange County have both headlights working, what is the probability that in a sample of eight au

Marta_Voda [28]

Answer:

$P(X \geq 7) = P(X=7) +P(X=8)$

And we can find the individual probabilities using the probability mass function

$P(X=7)=(8C7)(0.9)^7 (1-0.9)^{8-7}=0.3826$

$P(X=8)=(8C8)(0.9)^8 (1-0.9)^{8-8}=0.4305$

And replacing we got:

$P(X \geq 7) = P(X=7) +P(X=8)=0.3826 +0.4305=0.8131$

Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Solution to the problem

Let X the random variable of interest "number of automobiles with both headligths working", on this case we now that:

$X \sim Binom(n=8, p=0.9)$