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konstantin123 [22]
3 years ago
8

-5.5x+0.77=1.48 whats x

Mathematics
2 answers:
Nesterboy [21]3 years ago
8 0

Answer:

X= -0.1290 (bar line on top of the 90)

Hope this helps!

Step-by-step explanation:

agasfer [191]3 years ago
8 0

Answer:

X= -0.1290

Step-by-step explanation:

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What ia the angle of AOC and DOE
natulia [17]

(i) Angle AOC would equal 48°, as it is vertically opposite to angle DOB and they are therefore equal.


(ii) Angle DOE would equal 42°. We can see this because angles on a straight line add up to 180°, and 90 + 48 = 138, so we can do 180 - 138 = 42°.


I hope this helps!

4 0
2 years ago
Find the area of the equilateral triangle
uranmaximum [27]

Answer:

Step-by-step explanation:

Suppose that the side length is s.  Imagine that one side is level.  Draw a vertical line through the top vertex perpendicular to the base (level side).  Label this vertical line "h."  Then h and s are related as follows:

                               √3          h

sin 60 degrees = ------- = --------

                                 2           s

                                                                   s√3

and so h = the height of the triangle =  -----------

                                                                       2

The area of this triangle is (1/2)(base)(height), which here is:

(1/2)(s/2)( s√3 /2), or

        (s^2)√3

A = ---------------

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8 0
2 years ago
Read 2 more answers
Simplify the expression square root of 15•square17
alexira [117]

Step-by-step explanation:

\sqrt{15}\cdot\sqrt{17}=\sqrt{(15)(17)}=\sqrt{255}\\\\\text{Used}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}

5 0
2 years ago
Help please and thank you
Bingel [31]

Answer:

40° D. is your answer to this question

3 0
3 years ago
An ANOVA procedure is used for data obtained from four populations. Four samples, each comprised of 30 observations, were taken
tatiyna

Answer:

D. 3 and 116

Step-by-step explanation:

d.f.N = k - 1 (numerator degrees of freedom) = 4 - 1 = 3

N = 4 × 30 = 120

d.f.D = N - k (denominator degrees of freedom) = 120 - 4 =116

7 0
3 years ago
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