It takes Doug 3 days to reroof a house. If Doug's son helps him, the job can be completed in 2 days. How long would it take Doug's son, working alone, to do the job?

Answers

Answer 1
Answer: the answer is 1 day because if it takes Doug 3 days by himself and if his son helps him and it takes 2 days with the both of them that means it would only take Doug's son 1 day.

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Pls HELP ASAPby what percent will a fraction change if its numerator is decreased by 75% and the denomanator is decreased by 50%

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Answer:75 percent as a fraction is 3/4 and 50 percent as a fraction is 1/2

Step-by-step explanation:

It’s 25% hope this helps :D have a good day

The equation of the line that passes through points (0, negative 7) and (2, negative 1) is shown below. What value is missing from the equation?

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Answer:

3

Step-by-step explanation:

I got it right on edge 2020, your welcome :)

PLEASE HELP ME WITH THE PROBLEM ASAP

Answers

To solve the system of equations:

1. Start by setting the two equations equal to each other:

y = 2x - 1

y = 5 - x

2. Since both equations are equal to y, we can set them equal to each other:

2x - 1 = 5 - x

3. Simplify the equation by combining like terms:

2x + x = 5 + 1

3x = 6

4. Divide both sides of the equation by 3 to solve for x:

x = 2

5. Substitute the value of x back into one of the original equations to solve for y. Let's use the first equation:

y = 2(2) - 1

y = 4 - 1

y = 3

Therefore, the solution to the system of equations is x = 2 and y = 3.

Now, let's graph the equation y = 5 - x:

To graph the equation, we can create a table of values by choosing different values for x and calculating the corresponding values of y. Here are some points that lie on the graph:

x | y

-----

0 | 5

1 | 4

2 | 3

3 | 2

4 | 1

Plot these points on a coordinate plane and connect them to form a straight line. The graph of y = 5 - x will have a negative slope of -1 and intersect the y-axis at 5.

I hope this helps! Let me know if you have any further questions.

Express sin 404 in terms of the sine of a positive acute angle.

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sin404 = sin(360 + 44)
 as sin(360 + α) = sinα
 = sin44

The answer to the problem 5 x (4 + 1) is called a _____.A) sum
B) difference
C) product
D) quotient

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The answer to the problem 5 x (4 + 1) is called a C) product.

Given is an expression 5 x (4+1), we need to tell which mathematical operation dose it shows.

In mathematics, the term "product" refers to the result obtained when two or more numbers are multiplied together.

In this case, the numbers involved are 5 and (4 + 1). The expression (4 + 1) is first evaluated inside the parentheses, which results in 5.

Then, the multiplication is performed: 5 x 5 = 25.

So, the correct answer is C) product.

Learn more about multiplication click;

brainly.com/question/11527721

#SPJ6

Remember in PEMDAS (P = Parenthesis, E = Exponent, M = Multiplication, D=Division, A= Addition, S= Subtraction), you always do the Parenthesis or Brackets first. So your equation will become 5 x 5 in the end. Therefore the answer is "C) product".

Find the value of 2a² + 5b² when a = -6 b= 2

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-6^2 = 36 so 2x36 = 72 and 2^2 = 4 so 5x4 = 20
= 72 + 20 = 92