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gizmo_the_mogwai [7]
4 years ago
12

What are the solutions of

Mathematics
2 answers:
Soloha48 [4]4 years ago
5 0
-x^ 2 + 4x = x - 4
-x^2 + 3x + 4 = 0
multiply through by -1:-

x^2 - 3x - 4 = 0
factoring:-
(x - 4)(x + 1) = 0

x = 4 and -1

C



tino4ka555 [31]4 years ago
3 0
I like the coefienti in front of 2nd degree to be positive
times -1
x^2-4x=-x+4
add x to both sides and minus 4 from both sides
x^2-3x-4=0
factor
what 2 numbers multiply to get -4 and add to get -3?
-4 and 1
(x-4)(x+1)=0
set to zero

x-4=0
x=4

x+1=0
x=-1


-1 and 4
C is answer
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If a rectangle's length is 10 more than 3 times the width and the perimeter is 36. what are the dimensions?
Archy [21]
L=3W+10 and P=2(L+W)=36

36=2(3W+10+W)

36=8W+20

8W=16

W=2 and since L=3W+10=16

W=2 and L=16
3 0
4 years ago
Blake sold 17 verses for $3.25 each he spent $16.21 on materials to make the vases what is the profit
Soloha48 [4]

Answer:

We can calculate what did he get, as we know he sold 17 vasess for 3.25 dollars each of them, we can multiply:

17 * 3.25 = $55.25

Now, we know he got 55.25 dollars but he spent 16.21, so we substract:

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4 0
3 years ago
What is the length of line segment ab
Leokris [45]
The length of the line segment here is 13.

Distance Formula: 
√((x₂ - x₁)² + (y₂ - y₁))
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5 0
3 years ago
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Katrina owns a 9-acre farm. Last month, she bought her neighbor’s adjoining 8-acre farm. How large is Katrina’s farm now?
blondinia [14]

Answer:

17 acres

Step-by-step explanation:

9 acres + 8 acres = 17 acres, if that wasn't what the question meant please let me know and I'll change the answer or try to help clear confusion.

3 0
3 years ago
A padlock has a four-digit code that includes digits from 0 to 9, inclusive. What is the probability that the code does not cons
S_A_V [24]

Use the <u>theoretical definition</u> of <u>probability</u>:

Pr=\dfrac{\text{number of all favorable outcome}}{\text{number of all possible outcomes}}.

1. Find the probability that the code consists of all odd digits if the same digit is not used more than once in the code.

The number of all possible outcomes is

10\cdot 9\cdot 8\cdot 7=5040.

The number of codes in which all digits are odd is

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Then,

Pr(\text{all digits in code are odd})=\dfrac{120}{5040}.

2. Find the probability that the code does not consist of all odd digits if the same digit is not used more than once in the code:

Pr(\text{not all digits are odd})=1-Pr(\text{all digits in code are odd})=1-\dfrac{120}{5040}=\dfrac{4920}{5040}.

Answer: correct choice is D

3 0
3 years ago
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