!!!!!!!!50 POINTS!!!!!!!!!!!!Suppose a square has a side length by the expression x+5/8x. What is the perimeter of the square?

Answers

Answer 1

Answer: This is equal to (x -5)(x - 5), or (x - 5)².
Therefore, using the formula given above, the side's length is equal to (x - 5).

Muliply that by four to obtain the perimeter.

4(x - 5) = 4x -20.

For the second problem, disregard the brackets since there are no other operations besides subtraction and addition.

So it would become 3x^4 -x + 2 + 9x^5 - x² + x.

Now simplify everything and rewrite it in decreasing terms of power,

9x^5 + 3x^4 - x² + 2.

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A telephone company charges a fixed monthly rate plus a rate per minute of usage. The company charges $135 for 100 minutes of usage and $375 for 500 minutes of usage. An equation can be written to show the relationship between the total minutes used (x) and the total monthly charges (y). Which of the following best describes the steps to draw the graph of y against x?Draw a graph which joins the points (135, 100) and (375, 500) and has a slope = 0.6 Draw a graph which joins the points (100, 135) and (500, 375) and has a slope = 0.6 Draw a graph which joins the points (100, 135) and (500, 375) and has a slope = 1.67 Draw a graph which joins the points (135, 100) and (375, 500) and has a slope = 1.67
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What would be the value of Pearson’s r (simply the square root of r2)? R² = 0.785

Answers

Every equation that has anything squared in it is
going to have two solutions.

The solutions of R² = 0.785

are R = 0.886... (rounded)
and R = -0.886... (rounded) .

When you multiply EITHER of those numbers by itself, you get
0.785 , so both of them make the equation a true statement.

R^2 = 0.785

Take the square root of both sides

√R^2 = √0.785
R= 0.886

Lin's uncle is opening a bakery. On the bakery's grand opening day, he plans to give away prizes to the first 50 customers that enter the shop. Every fifth customer will get a free bagel. Every ninth customer will get a free blueberry muffin. Every 12th customer will get a free slice of carrot cake. 1.Diego is waiting in line and is the 23rd customer. He thinks that he should get farther back in line in order to get a prize. Is he right? If so, how far back should he go to get at least one prize? Explain your reasoning.

Answers

Answer:

Yes, he will have to go back, 1 person

Step-by-step explanation:

What is the percent change between 6 to 3?

Answers

Answer:

50% = percent chang

Step-by-step explanation:

6 ÷ 50%

6 × .50 = 3

3 ÷ .50 = 6

The percentage change is 50%

Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth. x^2 + 3 = -4x

A. 1,3
B. -1,-3
C. 1,-3
D. -1, 3

Answers

Hello,

x²+4x+3=0
x=(-4-2)/2=-3 or x=(-4+2)/2=-1

Answer B (-1,-3)

Find the value of the expression 4a to the fourth power - 2b squared +40 when a =2 and b=7

Answers

4a^4 -2b^2 +40
a=2
b=7
4(2)^4 -2(7)^2 +40
PEMDAS is what your gonna use to solve this you go from right to left

First is P which is parentheses which is none
second is E which stands for exponents
4(32)-2(49)+40
now MD multiply or divide
128-98+40
now add or subtract
30+40
last one
70 this is your answer i hope