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vlabodo [156]
3 years ago
11

An equation and the steps to solve it are shown below:

Mathematics
1 answer:
Sphinxa [80]3 years ago
6 0
S1: 7x - 4x - 2 = 6 OK
S2: 3x - 2 = 6 OK
S3: 3x - 2 + 2 = 6 WRONG, correct is 3x - 2 + 2 = 6 + 2

Answer: c. Step 3, because a number has been added only to one side of the equation.
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A quiz has 8 multiple choice questions and 4 options for each. How many ways are there to answer the questions
andreev551 [17]

hiAnswer:

Step-by-step explanation:

7 0
3 years ago
Someone please help me thank you
german

Answer:

4

Step-by-step explanation:

7x = x² - 8

=> x² - 7x - 8 = 0

use quadratic formula:

a = 1, b = -7, c = -8

x = \frac{-(1)±\sqrt{(-7)^{2} - 4(1)(-8) } }{2(1)} <em>(pls ignore the "A" I don't know why it's showing up)</em>

=> x = \frac{-1±\sqrt{49 + 32} }{2}

=> x = \frac{-1±9 }{2}

=> x = \frac{-1 +9}{2} = 4 or \frac{-1-9}{2} = -5 <em>(the answer is only 4 since it's asking for the positive solution)</em>

6 0
3 years ago
Read 2 more answers
Please answer this question I need a answer tonight
Schach [20]
Now Steve, you can tap these into your calculator one by one,
get all the quotients, and mark the ones that are 4.2, all in about
3 minutes.

There are three (3) of them in the list.

One of them is 'C'.          27.3  ÷  6.5  =  4.2

Now pick up your calculator and find the other two.  You can do it !
4 0
3 years ago
Read 2 more answers
1. (a) Show that 487 is prime. (b) Find the prime factorization of 2922. Show all working.
Tresset [83]

Answer:

Step-by-step explanation:

487 is a prime, because 487 is only divided by 1 or by itself

5 0
2 years ago
What’s 4 times 15 divided by 8 plus 20 minus 5 divided by 3
jonny [76]
The answer is 25.83333333

Hope this helps!
4 0
3 years ago
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