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Reika [66]
3 years ago
15

What’s the correct answer for this question?

Mathematics
1 answer:
sp2606 [1]3 years ago
8 0

A total of 13 teens were surveyed.

8 of those read books.

The probability would be 8/13 = 0.6153

Rounded to the nearest hundredth = 0.62

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The sum of the roots of 8x² - 2x = 1 is:<br> -1/4<br> 1/4<br> -1/8
madreJ [45]
8x^2-2x-1=0

8x^2-4x+2x-1=0

4x(2x-1)+1(2x-1)=0

(4x+1)(2x-1)=0

x=1/2 and -1/4

So the sum is 1/2-1/4=1/4

1/4
4 0
2 years ago
Read 2 more answers
The final grade in an algebra course is based on a weighted average - homework counts 10%, quizzes count 15%, tests count 50%, a
tresset_1 [31]

Answer:  74

<u>Step-by-step explanation:</u>

Homework +    Quiz    +   Test    + Final Exam = 70

  67(10%)    + 62(15%)  + 71(50%) +    x(25%)    = 70

   6.7           +    9.3      +   35.5    +      0.25x     = 70

                                                      51.5 + 0.25x = 70

                                                                 0.25x = 18.5

                                                                        x = 74

The minimum score is 74.

8 0
2 years ago
Read 2 more answers
Yellow Cab Taxi charges a $1.95 flat rate in addition to $0.60 per mile. Katie has no more than $10 to spend on a ride. How many
mestny [16]
Easy :).

Remove the flat rate to see how much money she has to spend: 10 - 1.95 = 8.15.

We have 8.15 (remaining money) / 0.60 (per mile) = 13 miles (or <span>13.5833333333 [copy pasted from a calculator moderators] but I assume you want a rounded version)</span>
5 0
3 years ago
Quadrilaterals WXYZ and W"X"Y"Z"are similar. Identify the type of reflection
Anna71 [15]

Answer:

B) To obtain quadrilateral W'X'Y"Z" quadrilateral WXYZ is reflected across

the x-axis and dilated with a scale factor of 1/2

Step-by-step explanation:

Transformation is the movement of a point from its initial location to a new location. Types of transformation are reflection, rotation, translation and dilation.

If a point A(x, y) is reflected across the x axis the new point is at A'(x, -y)

Dilation is the enlargement or reduction in the size of a figure by a scale factor. If a point A(x, y) is dilated by a scale factor of k about the center of origin, the new point is at A'(kx, ky).

The vertex of Quadrilaterals WXYZ is at W(-6, 8), X(-2, 8), Y(-2, 2), Z(-6, 8) while the vertex of Quadrilaterals W"X"Y"Z" is at W"(-3, -4), X"(-2, -4), Y"(-1, -1), Z"(-3, -4)

If quadrilateral WXYZ is reflected across  the x-axis, the new coordinates would be at W'(-6, -), X'(-2, -8), Y'(-2, -2), Z'(-6, -8). If the quadrilateral is then dilated with a scale factor of 1/2, the new point is at W"(-3, -4), X"(-2, -4), Y"(-1, -1), Z"(-3, -4)

5 0
2 years ago
Solve for x in the triangle round your answer to the nearest tenth
enot [183]

Answer:

8,55

Step-by-step explanation:

use trigonometric functions

8 0
2 years ago
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