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3 years ago

Solve for x: 5x + 2 = 4x - 9

Mathematics

2 answers:

qaws [65]3 years ago

5 0

Answer:

x = - 11

Step-by-step explanation:

Given

5x + 2 = 4x - 9 ( subtract 4x from both sides )

x + 2 = - 9 ( subtract 2 from both sides )

x = - 11

son4ous [18]3 years ago

4 0

Answer: x = -11

Step-by-step explanation:

Move all terms containing x to the left side of the equation.

A mathematical statement that says two expressions have the same value; any number sentence with an = .

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If Carbon Monoxide had a concentration in the air of 0.000518% how many particles out of 331,002,651 would be Carbon Monoxide?

Alex17521 [72]

Answer:

171,459 particles of CO

Step-by-step explanation:

331,002,651×0.000518 = 171459

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3 years ago

Suppose a research firm conducted a survey to determine the average amount of money steady smokers spend on cigarettes during a

olchik [2.2K]

Answer:

option (b) 0.0228

Step-by-step explanation:

Data provided in the question:

Sample size, n = 100

Sample mean, μ = $20

Standard deviation, s = $5

Confidence interval = between $19 and $21

Now,

Confidence interval = μ ± $z\frac{s}{\sqrt n}$

thus,

Upper limit of the Confidence interval = μ + $z\frac{s}{\sqrt n}$

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Hence,

the correct answer is option (b) 0.0228

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3 years ago

A (4x) B (2x + 6) What is the value of x?

GenaCL600 [577]

Answer:

The answer is 14°. I hope it helps you

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3 years ago

Which expression has a value of 50

rodikova [14]

Answer:

Step-by-step explanation:

(50 +10) / ( 5+5)

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3 years ago

A particular fruit's weights are normally distributed, with a mean of 372 grams and a standard deviation of 26 grams. If you pic

Mrac [35]

Answer: 90.93%

Step-by-step explanation:

M= 372

s= 26

n=36

P(365<x<380)

1. Find Z ----> 365-372 $\sqrt{36}$ = -1.6 Next Z----> 380 - 372 $\sqrt{36}$ = 1.8

26 26

2. plug into calculator to find probablity: normalcdf(-1.6 , 1.8 ) = .90927 or 90.93% that the prob is between 365 and 380

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3 years ago