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9966 [12]
3 years ago
14

PLZ HELP ITS DUE TODAY

Mathematics
1 answer:
Nady [450]3 years ago
8 0

9514 1404 393

Answer:

  x = {-0.44, 1.69}

Step-by-step explanation:

Multiply by the denominator to eliminate the fraction.

  3 = x(4x -5)

  4x^2 -5x -3 = 0 . . . . . subtract 3 and put in standard form

Using the quadratic formula with a=4, b=-5, c=-3, we have the solutions as ...

  x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}=\dfrac{-(-5)\pm\sqrt{(-5)^2-4(4)(-3)}}{2(4)}\\\\x=\dfrac{5\pm\sqrt{73}}{8}\approx \{-0.443, 1.693\}

Solutions rounded to hundredths are ...

  x = -0.44

  x = 1.69

_____

A graphing calculator can show the x-intercepts easily, so it works well to write the equation in the form

  f(x) = 0

  3/(4x -5) -x = 0

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There are 21 apples,28 pears and 49 oranges. These are to be arranged in heaps containing the same number of fruits. Find the gr
loris [4]
21+28+49= 98 (fruit)
98/49=2

2 heaps can be formed.
Each would have 49 fruit.
8 0
3 years ago
5x - 2y = -48<br>2x + 3y = -23<br>Solve for x and y
vredina [299]

Answer:

<em>x = -10, and y = -1</em>

Step-by-step explanation:

5x - 2y = -48

2x + 3y = -23

First equation times -2:        -10x + 4y = 96

Second equation times 5:     10x + 15y = -115

Add the last two equations:            19y = -19

y = -1

Substitute 1 for y in the first original equation.

5x - 2y = -48

5x - 2(-1) = -48

5x + 2 = -48

5x = -50

x = -10

Solution: x = -10, and y = -1


3 0
3 years ago
2. (5 points) The two figures are similar. Write the similarity statement. What is the scale factor? Show all work. Triangle ABC
vladimir1956 [14]
I believe the scale factor is 3:4
If you compare corresponding sides, 45:60=3:4 and 30:40=3:4
8 0
4 years ago
HELPPP!!! WILL GIVE BRAINLIEST!!
Gnom [1K]
1st question: ∠G = 180 - (104+33) = 43°. According to the picture, we can claim that. Indeed, we considered that ∠N= ∠H. 

2nd question: In order to carry out this transformation, using similarity transformation the following steps must be applied
1) From the center of the second circle to the center of the first circle, a vector has to be drawn
2) The second circle must be carried to the first circle by this vector.
3) Finally, the transformation is done by this dilation. Indeed, everything comes to the theorem for the similarity of the circles that all circles are similar.
And the scale factor is \frac{r_{1} }{r_{2} } =  \frac{8}{4} =2

4 0
3 years ago
Read 2 more answers
The mean if 5 numbers is 19 what is the sum of the number?​
Dahasolnce [82]

Answer:

95

Step-by-step explanation:

Use the mean formula: mean = sum of elements / number of elements

Plug in the mean and number of elements, then solve for the sum of the numbers:

mean = sum of elements / number of elements

19 = sum of elements / 5

95 = sum of elements

So, the sum of the numbers is 95.

4 0
3 years ago
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