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g100num [7]
3 years ago
12

There once was a student named chandler. In 5 minutes, chandler texted 435 words. At the rate how many words did chandler text p

er minute ?
Mathematics
1 answer:
Sergio [31]3 years ago
7 0

Answer:

87

Step-by-step explanation:

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7 ( x - 12 )= -21 solve for x
marshall27 [118]
Divide botoh sides by 7
x-12=-3
add 12 to both sides
x+12-12=12-3
x+0=9
x=9
8 0
3 years ago
Pls help i am on a timer
stich3 [128]

Answer:

x = 1 + \sqrt{2} \ \ or \ 1- \sqrt{2}

Step-by-step explanation:

Given;

x² - 2x - 1 = 0

Solve by completing the square method;

⇒ take the constant to the right hand side of the equation.

x² - 2x = 1

⇒ take half of coefficient of x = ¹/₂ x -2 = -1

⇒ square half of coefficient of x and add it to the both sides of the equation

x^2 +  (-1)^2 = 1 + (-1)^2

(x-1)^2 = 1 + 1\\\\(x-1)^2 = 2\\\\

⇒ take the square root of both sides;

x-1 = +/- \ \ \sqrt{2} \\\\x = 1 + \sqrt{2} \ \ or \ 1- \sqrt{2}

Therefore, option B is the right solution.

3 0
2 years ago
Lol please help im bad at maths ;n;
aivan3 [116]

Answer:

60

Step-by-step explanation:

You want to then multiply 5*4*3 to represent the different combinations we can make for each place. This gives us a total of 60 different possible ways that the runners can come in 1st, 2nd, and 3rd place, assuming no ties.

8 0
2 years ago
Read 2 more answers
a store owner paid $15 for a book. she marked up the price of the book by 40% to determine its selling price. what is the sellin
Hunter-Best [27]

Answer:

$21

Step-by-step explanation:

40% of 15 is 6, and 15 + 6 is 21

5 0
2 years ago
Read 2 more answers
To make a cake, you need 2 parts flour, 2 parts sugar and 1 part eggs.
Allisa [31]

Answer:

2:1???

Step-by-step explanation:

7 0
2 years ago
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