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vitfil [10]
3 years ago
5

Which variable expression matches the word phrase "4 less than 2 times a number"

Mathematics
1 answer:
Xelga [282]3 years ago
4 0

Answer:

2x - 4

Step-by-step explanation:

a number = x

x is being multiplied to 2

4 is being subtracted from 2 times x

Multiplication is first.

2x - 4

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Someone pls help this is a timed quiz
gayaneshka [121]

Answer:

\frac{6}{7}  \times 100 \\  = 85.71

Step-by-step explanation:

if correct brainyest pls

3 0
3 years ago
Identify the equation modeled below,and then find its solution
Usimov [2.4K]

Answer:

H

Step-by-step explanation:

4x-4=-x-1 = 3/5 or .6

8 0
3 years ago
A TV company when purchasing thousands electronic components apply this sampling plan: randomly select 15 of them and then accep
katrin [286]
<h2>Answer with explanation:</h2>

According to the Binomial probability distribution ,

Let x be the binomial variable .

Then the probability of getting success in x trials , is given by :

P(X=x)=^nC_xp^x(1-p)^{n-x} , where n is the total number of trials or the sample size and p is the probability of getting success in each trial.

As per given , we have

n = 15

Let x be the number of defective components.

Probability of getting defective components = P = 0.03

The whole batch can be accepted if there are at most two defective components. .

The probability that the whole lot is accepted :

P(X\leq 2)=P(x=0)+P(x=1)+P(x=2)\\\\=^{15}C_0(0.03)^0(0.97)^{15}+^{15}C_1(0.03)^1(0.97)^{14}+^{15}C_2(0.03)^2(0.97)^{13}\\\\=(0.97)^{15}+(15)(0.03)^1(0.97)^{14}+\dfrac{15!}{2!13!}(0.03)^2(0.97)^{13}\\\\\approx0.63325+0.29378+0.06360=0.99063

∴The probability that the whole lot is accepted = 0.99063

For sample size n= 2500

Expected value : \mu=np= (2500)(0.03)=75

The expected value = 75

Standard deviation :  \sigma=\sqrt{np(1-p)}=\sqrt{2500(0.03)(0.97)}\approx8.53

The standard deviation = 8.53

6 0
3 years ago
In which quadrant is the ordered pair ( 7, -8 ) located? *
Paul [167]

Answer:

i think IV

Step-by-step explanation:

because of the picture

4 0
3 years ago
Read 2 more answers
Please HELP!!!!!!!!!
DaniilM [7]

1.

Calculate the sum

5x - 10 + 7 = 65 - 20x + 32

Move terms

5x - 3 = 97 - 20x

Collect the like terms and calculate

5x + 20x = 97 +3

Divide both sides by 25

25x = 100

X= 4 ANSWER

I skipped some steps because it would be too long :/

2.

Multiply parenthesis by 8

20x>8(4x - 5) -20

Calculate

20x>32x - 40 - 20

Move variable to the left

20x>32x-60

Collect like terms

20x - 32x > -60

Divide both sides by -12

-12x>-60

X<5 ANSWER

8 0
3 years ago
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