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Ilya [14]
2 years ago
6

What kinds of numbers or combinations of numbers do not work when solving equations? How do you know your answer is correct?

Mathematics
1 answer:
BabaBlast [244]2 years ago
6 0

Answer:

Step-by-step explanation:

I wrote an excel macro that listed all of the combinations of these 6 numbers in a string, with the x and = symbols mixed in every possible way. (The first combination was “1*2=4568” and the last one was “8654=2*1”) I then had the macro evaluate the equations and find the ones that evaluated to true. Out of the 18,000 combinations of numbers and math symbols, only 8 of them evaluated to true. The true combinations are…………..

416=52*8

416=8*52

512=64*8

512=8*64

52*8=416

64*8=512

8*52=416

8*64=512

(Note that there are only 2 distinct combinations that work. The macro found all the ways that you can express those 2.)

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In February, Campus Cycle Repair had income from sales of $16,000. Expenses for the month included: rent, $1,250; utilities, $45
djyliett [7]

Answer:

Profit $5700

Step-by-step explanation:

To find loss/profit you subtract the expenses from the total income

Income from sales= $16000

Franchise fee= 5% of sales income

=\frac{5}{100} *16000=800

Rent=$1250

Utilities=$450

Wages=$4800

insurance=$300

supplies=$2700

Total expenses

=$1250+$450+$4800+$300+$2700+$800=$10300

Total income

=$16000

Profit

=$16000-$10300=$5700

5 0
4 years ago
At the movie theatre, child admission is
Dmitriy789 [7]
Child = $5.70
Adult = $9.80

- We can conclude that the amount of adult is double the amount of child tickets bought. (total of $556.60)

For this, you will need to divide the total amount by two and draw a tree chart with each of the numbers to get the seperation of the two. I would find out how many 9.80s or 5.70s go into $56.60 so you'll just have $500

7 0
3 years ago
Х<br>x<br>(1) Find the value of 7x + 3y <br><br>when<br>= 12 and<br>y = -6​
anyanavicka [17]

Answer:

66

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Solve 2x^2 − 8x = −7
kenny6666 [7]

Answer:

The answer to your question is below

Step-by-step explanation:

                                2x²  -   8x   =  - 7

Divide by 2

\frac{2}{2} x^{2}  - \frac{8}{2} x    = \frac{-7}{2}

Complete the trinomial

x^{2}  - 4x + (2)^{2}  = \frac{-7}{2} + (2)^{2}

Simplify

x^{2}  - 4x  + (2)^{2}  = \frac{- 7 + 4}{2}

x^{2}  - 4x + 4 = \frac{-3}{2}

Factor

(x - 2)²  =  \frac{-3}{2}

Get the square root

\sqrt{(x - 2)^{2}} = \sqrt{\frac{-3}{2}}

Simplification

               x - 2 =± \sqrt{\frac{3}{2}} i

      x₁ = 2 + \sqrt{\frac{3}{2}} i

       x₂ = 2 - \sqrt{\frac{3}{2}}

6 0
3 years ago
Find the length of the segment indicated. Round your answer to the nearest tenth if necessary.
guajiro [1.7K]

Answer:

<em>Length of x ⇒ ( About ) 11.5; Option C</em>

Step-by-step explanation:

<em>~ Let us plan this question step-by-step. We know that the line segment with length 13.1 is a radii to the circle, as well as a hypotenuse to a right triangle. Respectively the hypotenuse of another triangle is a hypotenuse as well. By radii ≅, these two part of these two triangles are ≅ ~</em>

1. If these two parts are ≅, the triangle with leg x has a hypotenuse of 13.1 as well ( through ≅ ). This would mean that Pythagorean theorem is applicable for this triangle, as to solve for line segment x.

2. By Pythagorean Theorem ⇒

6.2^2 + x^2 = 13.1^2,

38.44 + x^2 = 171.61,

x^2 = 133.17

<em>Length of x ⇒ ( About ) 11.5</em>

7 0
4 years ago
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