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lord [1]
3 years ago
9

(1 point)

Mathematics
2 answers:
AlekseyPX3 years ago
8 0

Answer:

  20 + 3x ≥ 50

Step-by-step explanation:

After x days, John will have added 3x points to his total. The new total will be ...

  20 +3x

We want that value to be at least 50, so we use the symbol "greater than or equal to" to express that relationship:

  20 +3x ≥ 50

_____

Brainly makes available a table of math symbols so you can choose the appropriate one to use in your expression. The number 2 is not the same as the symbol ≥. Using incorrect symbols makes it very difficult to tell what the intended problem is.

Tresset [83]3 years ago
5 0

Answer:

20 +3x ≥ 50

Step-by-step explanation:

<h2><u>INEQUALITIES </u></h2>

since john already has 20 points this would be added to the points he is yet to receive

3 points if he goes to the shop once a day for x days

means 3x

because 3 points multiplied  by the number of days he went to the coffee shop

<em>AT LEAST 50 means</em>

≥50

now we can create the equation

<u>20 + 3x ≥ 50 </u>

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murzikaleks [220]

Here's link to the answer:

tinyurl.com/wpazsebu

6 0
3 years ago
Triangle DEF has vertices located at D (2, 1), E (3,5), and F (6,2).
IRINA_888 [86]

Answer:

(A)

Length of DE = √17

EF = √18

DF = √17

(B) Slope of DE = 4

EF = 1

DF = 1/4

(C) Isosceles triangle.

Step-by-step explanation:

See attached image.

3 0
3 years ago
5. Find the value(s) of x so that the line containing the points (2x + 3, x + 2) and (0, 2) is
Dvinal [7]

Answer:

  x = -2 or -9

Step-by-step explanation:

You want the values of x such that the line defined by the two points (2x+3, x+2) and (0, 2) is perpendicular to the line defined by the two points (x+2, -3-3x) and (8, -1).

<h3>Slope</h3>

The slope of a line is given by the slope formula:

  m = (y2 -y1)/(x2 -x1)

Using the formula, the slopes of the two lines are ...

  m1 = (2 -(x+2))/(0 -(2x+3)) = (-x)/(-2x-3) = x/(2x +3)

and

  m2 = (-1 -(-3-3x))/(8 -(x+2)) = (2+3x)/(6 -x)

<h3>Perpendicular lines</h3>

The slopes of perpendicular lines have product of -1:

  \dfrac{x}{2x+3}\cdot\dfrac{2+3x}{6-x}=-1\\\\x(3x+2)=(2x+3)(x-6)\qquad\text{multiply by $(2x+3)(6-x)$}\\\\3x^2+2x=2x^2-9x-18\qquad\text{eliminate parentheses}\\\\x^2+11x+18=0\qquad\text{put in standard form}\\\\(x+2)(x+9)=0\qquad\text{factor}

<h3>Solutions</h3>

The values of x that satisfy this equation are x = -2 and x = -9. The attached graphs show the lines for each of these cases.

4 0
1 year ago
What is the difference between -3 and 7? *
Murrr4er [49]

Answer:

4

Step-by-step explanation:

Hope this helped

6 0
3 years ago
Read 2 more answers
How many solutions exist for the given equation?
Virty [35]

Answer:

Hey the answer is one.

Step-by-step explanation:

There is a quizlet with 18 of the answers with explanations on it just type in the unit subject and this question and it should pop up.

But on a side note,

I don't know who deleted my answer last time but I was giving you a resource to use if you want to learn the full step by step explanation look on your lesson videos or ask your teacher. This site i have found lets people give one another answers so unless this person and some army is planning on stopping everyone from giving answers i think they should just stop using this site.

5 0
4 years ago
Read 2 more answers
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