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4 years ago

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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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:

#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

Step-by-step explanation:

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

x = -5y - 4

+4 +4

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 normal distribution and the central limit theorem, 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 $n = 35, \mu = 35(4) = 140, s = 1.5\sqrt{4} = 3$