MATHEMATICS MIDDLE SCHOOL

Which equation has every number as a solution?A. 4x = 4x + 1
C. 4(x+1)= 4x+1
B. 4x + 1 = 4x - 1
D. 4(x+1) = 4x + 4

Answers

Answer 1
Answer:

Answer:

the answer is D

Step-by-step explanation:

the equation works with every number placed where the x is, for example:

4(5+1)= 4×5 + 4

4×6=20+4

24=24

but it also works with

4(11+1)= 4×11 + 4

4×12=44+4

48=48

and it also works with every possible number you can think!
Answer 2
Answer:

Answer:

D.

Step-by-step explanation:

Lets look at equation D:

4(x + 1) = 4x + 4

4x + 4 = 4x + 4.

The left side is identical to the right so

you can put x equal to  any number and this equation will be true.

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How many pennies in 456 dollars?

Answers

456 × 100 = 45600. 45600 pennies equal 456 dollars.
45600 each dollar is 100 pennies 456x1 then add two zeros 

in a department store, a $40 dress is marked, "save 25%." what is the discount? what is the sale price of the dress?

Answers

25%= 1/4

1/4 of 40 is 10

40 - 10= 30

$30 is the sales price.

$10 was the discount.
so wat you do first is 40 ×.25 which is______ then you minus- what you get from 40 

A company’s stock decreased from $15 per share to $9 per share. What is the percentage decreased in stock price? Round your answer to the nearest whole percent. Do not include the percent sign in your answer.

Answers

Answer:

40

Step-by-step explanation:

Let's use the Rule of Three Simple to answer the question this way:

Stock price    Percentage

$ 15                    100%

$ 9                       x

15 * x = 9 * 100

15x = 900

x = 900/15

x = 60

Percentage decreased = 100 - 60

Percentage decreased = 40

The company's stock decreased 40 percent

Final answer:

The decrease in the stock price from $15 to $9 represents a 40% decrease. We arrived at this result by subtracting the lower price from the higher one, dividing the result by the original price and then multiplying by 100.

Explanation:

The question asks about how much the stock price of a company decreased from $15 per share to $9 per share. In this case, the first step is to determine the difference in the stock prices, which is $15 - $9 = $6. To find the percentage decrease, we divide this difference by the original price and multiply by 100:

($6 / $15) * 100 = 40

Therefore, the stock price decreased by 40%. It's important to understand that stock prices can fluctuate based on a variety of factors, as seen in stock market histories such as the case of Netflix, whose stock price has experienced significant changes over the years. Nevertheless, the principle of calculating the percentage decrease remains the same.

Learn more about Percentage Decrease here:

brainly.com/question/29763752

#SPJ11

Mrs. Solar modeled Contractor 2’s fees with the formula y = 150 + 55x. Mrs. Solar compared Contractor 2’s fee to Contractor 1’s fee.

(a) What does the difference between 50 and 55 mean in the real-world context?
(b) What does the difference between 200 and 150 mean in the real-world context?

Answers

I'm guessing that you forgot to put contractor 1's fees
judging from the question, I would assume that his fees are y=200+50x
I will assume that y=fee and x=number of hours (or units of time)

so
a. difference between 55 and 50, that is 5 so #2's fee is 5$ more for every hour he works
b. difference between200 and 150 means that contractor 1 gets 50 more initally than contractor 2

how would you write 77.7ovdrbar% as a decimal? Set that decimal equal to x. What digit or digits repeat

Answers

Answer:

0.777=0.\overline{7}

Step-by-step explanation:

We are asked to write 77.7% as a decimal.

We know that percent means per hundred.

To write 77.7% as decimal, we will divide 77.7 by 100 as:

77.7\%=(77.7)/(100)

Move decimal to left by two digits.

77.7\%=(77.7)/(100)=0.777

Let us set 0.777 equal to x as:

x=0.777

We can see that our decimal has three 7 digits after decimal, therefore, 1 digit is repeating after decimal.

When changing a percent to a decimal move the decimal already there over 2 spaces to the left. So 77.7% would be .777 in decimal form.

7(4+5+2)-6(3+5) evaluate the expression

Answers

Answer:

29

Step-by-step explanation:

7(4 + 5 + 2) - 6(3 + 5)

First we need to know what PEMDAS is. It is an acronym that helps remind you what steps to take when evaluating any kind of equation or expression.

  1. P-arentheses
  2. E-xponents
  3. M-ultiplication
  4. D-ivision
  5. A-ddition
  6. S-ubtraction

In PEMDAS, multiplication/division and addition/subtraction are in no particular order-- they are solved from left to right.

Knowing what PEMDAS means, you can start evaluating the expression. Start by solving inside the parentheses, as PEMDAS tells you to do.

Add 4 + 5 + 2 and 3 + 5 inside of the two parentheses in the expression.

7(11) - 6(8)

Since there are no exponents, you can skip this step and move on to multiplying 7 * 11 and 6 * 8.

(77) - (48)

The final process in evaluating this expression is to subtract 48 from 77.

29 is your answer.

Answer:

7(11) -6(8)

77-48=29

Step-by-step explanation:
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