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erastova [34]
4 years ago
12

Which expression makes the equation true for all values of x 16x-16=4

Mathematics
1 answer:
11Alexandr11 [23.1K]4 years ago
4 0

Answer:

x= 5 /4

Step-by-step explanation:

16x-16=4

add 16 to both sides

16x-16+16=4+16

16x=20

Divide by 16 to both sides

16x/16=20/16

x=5/4~~ 1.25 decimal  

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7.
mylen [45]

The cafeteria sold 41 corn chips and 80 potato chips.

Step-by-step explanation:

Let,

Corn chips = x

Potato chips = y

Price of corn chips = $0.80

Price of potato chips = $0.60

According to given statement;

x+y= 121   Eqn 1

0.80x+0.60y=80.80   Eqn 2

Multiplying Eqn 1 by 0.80

0.80(x+y= 121)\\0.80x+0.80y=96.80\ \ \ Eqn\ 3

Subtracting Eqn 2 from Eqn 3

(0.80x+0.80y)-(0.80x+0.60y)=96.80-80.80\\0.80x+0.80y-0.80x-0.60y=16\\0.20y=16

Dividing both sides by 0.20

\frac{0.20y}{0.20}=\frac{16}{0.20}\\y=80

Putting y=80 in Eqn 1

x+80=121\\x=121-80\\x=41

The cafeteria sold 41 corn chips and 80 potato chips.

Keywords: linear equation, subtraction

Learn more about linear equations at:

  • brainly.com/question/4639731
  • brainly.com/question/4655616

#LearnwithBrainly

5 0
4 years ago
What is the value of sin(A)?
Rama09 [41]

Answer:

3/5

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Two different questions.. please try to answer both if possible!!!
boyakko [2]

Answer: A

<u>Step-by-step explanation:</u>

f(x) = -5x - 4   ⇒   y = -5x - 4     <em>switch the x's and y's and solve for y</em>

  x = -5y - 4

<u>+4 </u>     <u>      +4 </u>

x + 4 = -5y

\frac{x+4}{-5} = \frac{-5y}{-5}

-\frac{x+4}{5} = y

\frac{-x-4}{5} = y

\frac{-1}{5}x - \frac{4}{5}  = y

***********************************************************

The top line of the second question is cut off so cannot help you without knowing what the restriction is on v(x).



3 0
4 years ago
First Class Airlines has 40 pilots for every 15 aircrafts. If they employ 240 pilots, how many aircrafts does First Class Airlin
olchik [2.2K]

Answer:

90 Aircrafts.

Step-by-step explanation:

240/40 = 6, 6 • 15 = 90. The answer would be 90 aircrafts.

8 0
3 years ago
Halloween Candy Halloween is Kelly's favorite holiday of the year! Based on experience, Kelly knows that on average, each house
LuckyWell [14K]

Using the <u>normal distribution and the central limit theorem</u>, it is found that there is an approximately 0% probability that the total number of candies Kelly will receive this year is smaller than last year.

Normal Probability Distribution

In a normal distribution with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

  • It measures how many standard deviations the measure is from the mean.  
  • After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.
  • By the Central Limit Theorem, for n instances of a normal variable, the mean is n\mu while the standard deviation is s = \sigma\sqrt{n}.

In this problem:

  • Mean of 4 candies, hence \mu = 4.
  • Standard deviation of 1.5 candies, hence \sigma = 1.5.
  • She visited 35 houses, hence n = 35, \mu = 35(4) = 140, s = 1.5\sqrt{4} = 3

The probability is the <u>p-value of Z when X = 122</u>, hence:

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{122 - 140}{3}

Z = -6

Z = -6 has a p-value of 0.

Approximately 0% probability that the total number of candies Kelly will receive this year is smaller than last year.

A similar problem is given at brainly.com/question/24663213

6 0
3 years ago
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