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just olya [345]
2 years ago
13

80 decreased by 3 times a number is 56 what’s the number

Mathematics
2 answers:
frez [133]2 years ago
7 0

Answer:

The number would be a variable like x 80-3x=56

Step-by-step explanation:

80-3x=56

IgorLugansk [536]2 years ago
6 0

Answer:

X = 8

Step-by-step explanation:

80 - 3(x) = 56

-3(x) = -24

X = 8

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Alexandra [31]

Hey there! :)

Answer:

C. {x² + 4, x < 2

    {-x + 4   x ≥ 2

Step-by-step explanation:

This is a piecewise function, where the two equations are different. They are:

y = x²+ 4

y = -x + 4

The function x² + 4 is graphed where x < 2. (< is used because the circle is open)

The function -x + 4 is graphed where x ≥ 2. (≥ is used since the endpoint is closed)

Therefore, the correct answer is:

C. x² + 4, x < 2

   -x + 4   x ≥ 2

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3 years ago
10................/......
jolli1 [7]

Answer:

<h2><u>-1 + √3 or -(1 - 2√3)</u></h2>

Step-by-step explanation:

(1 + √3) (2 - √3) = 2 - √3 + 2√3 - 3 = 2 - 3 - √3 + 2√3 = <u>-1 + √3 or -(1 - 2√3)</u>

6 0
3 years ago
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Dmitry_Shevchenko [17]

Answer:

MN

Step-by-step explanation:

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3 years ago
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The ratio of people who walk home from school to people who ride the bus home is 2 : 7 2 : 7 . The number of bus riders is how m
SashulF [63]
Ratio walkers to riders 2:7

7/2=3.5

The bus riders are 3.5 times more than the riders
8 0
2 years ago
❗ANSWER+EXPLANATION=100POINTS+BRAINLIEST❗<br>solve: (x+2)(5x-1)=0<br>thanks)​
IrinaVladis [17]

The solution to the given quadratic equation is;

x = -2 and x = 1/5

<h3>Roots of quadratic Equation </h3>

We are given the quadratic function;

(x + 2)(5x - 1) = 0

In quadratic functions, when it is expressed as;

(x + a)(x - b) = 0, what this means is that the factors of the quadratic equation or polynomial are; (x + a) and (x - b)

What that means is that the roots will be gotten from;

(x + a) = 0 and (x - b) = 0

Thus, applying the concept above on roots of a polynomial to our question, we have;

(x + 2) = 0 and 5x - 1 = 0

Solving them gives us;

x = -2 and x = 1/5

Read more on roots of quadratic equation at; brainly.com/question/8649555

4 0
2 years ago
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