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charle [14.2K]
3 years ago
5

PLEASE HELP ME!!!!!!!

Mathematics
1 answer:
Sidana [21]3 years ago
4 0
He has come from the hole in the roof because the text states that he did not come from a door, a window, or a chimney, and that is the only answer that was left.
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What is the simplified form of (x + 3)²​
a_sh-v [17]

Answer:

x^2+6x+9

Step-by-step explanation:

expand the expression

7 0
3 years ago
What is the value of u in the equation u−56=33 ?
Evgen [1.6K]
<span>u−56=33
Add 56 to both sides
Final Answer: u = 89</span>
4 0
3 years ago
Given that the solution set to a system of three linear equations is a line, which of the following is true about the system?
Setler79 [48]

The <em><u>correct answer</u></em> is:

d) The system can only be dependent and consistent.

Explanation:

In order for the solution to a system of equations to be a line, this means that the lines must lie on top of one another.  This means they are the same line; the system is consistent since there is at least one solution, and dependent since all of the points in one equation work for the other equations as well.

8 0
3 years ago
Read 2 more answers
Solve the system by substitution math help. Please show every step.
Arlecino [84]
The idea here is to combine the equations into one in only one variable. The last equation is in only x and z so lets sub out y in the second.

-x - y - z = -8
8 - x - z = y

Substitute y with (8 - x - z) into the next equation.
-4x + 4(8 - x - z) + 5z = 7
-4x + 32 - 4x - 4z + 5z = 7
-8x + 32 + z = 7
 The variable z is easiest to get alone; use that as substitution in the last equation.
z = 7 + 8x - 32
z = 8x - 25

Substitute z with (8x - 25)
2x + 2(8x - 25) = 4
2x + 16x - 50 = 4
18x = 4 + 50
18x = 54
x = 3

So use x = 3 in that  last equation to find z.

2(3) + 2z = 4
6 + 2z = 4
2z = 4 - 6
2z = -2
z = -1

Now, use both x = 3 and z = -1 to find the final variable y.

-3 - y - (-1) = -8
-3 - y + 1 = -8
-2 - y = -8
-y = -8 + 2
-y = -6
y = 6

Solutions x,y,z = ( 3, 6, -1)


5 0
3 years ago
The cost of renting a canoe is $5.25, plus $0.50 per hour for the time that the canoe is out. Which equation could be used to fi
ki77a [65]

Answer:

C = 5.25 + 0.50H

Step-by-step explanation:

gah, I'm never sure how to explain my work in these sorts of problems. hopefully I was able to help anyways!

6 0
3 years ago
Read 2 more answers
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