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Fittoniya [83]
3 years ago
12

How many times greater is the value of the 5 in 500 than the value of the 5 in 50

Mathematics
1 answer:
densk [106]3 years ago
4 0
It is 10 times bigger. It is easy because you can do 50 x 10 which is 500 and you know it is 10 times bigger.
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Which of the following relationships is a direct variation?
mafiozo [28]

Answer:Well All i know is that the answer is not C I'm sorry I dont know the correct answer but I know for a fact that the answer isn't C

Step-by-step explanation:

4 0
3 years ago
<img src="https://tex.z-dn.net/?f=-8%285d-2%29%3D-35" id="TexFormula1" title="-8(5d-2)=-35" alt="-8(5d-2)=-35" align="absmiddle"
notka56 [123]
-8(5d-2)=-35
-40d+16=-35
-40d= -51
D=-51/-40
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2 years ago
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3 years ago
The string of a flying kite is being held five feet off the ground. It makes a 60 degree angle with one side parallel to the gro
VashaNatasha [74]

Answer:

Maria is right

Height=265 ft

Step-by-step explanation:

In the attached diagram, the length of the kite is BC and the height of the Kite above the ground is CE.

Now, CE=CD+DE

DE=5 ft

Next, we have to determine the length of CD.

In Triangle BCD

sin\:60^\circ=\frac{|CD|}{300} \\|CD|=300*sin 60\\|CD|\approx260\:ft

Therefore:

CE=260+5=265 ft

From the above, we see that <u>Maria is right.</u>

Billy erroneously applied the wrong trigonometric ratio (Cosine) which made him get a value of 150ft.

5 0
3 years ago
It is known that the straight line l is tangent to the circle x^2+y^2=4 at a point on the x-axis, and intersects with the straig
Talja [164]

Step-by-step explanation:

The general equation of a circle is

                                         (x \ - \ h)^2 \ + \ (y \ - \ k)^2 \ = \ r^{2},

where <em>h</em> and <em>k</em> forms the coordinates of the centre of the circle.

When the circle has a centre at the origin, the equation reduces into

                        .                            x^2 \ + \ y^2 \ = r^2.

Now, we are interested in solving for the <em>x</em>-intercepts (the <em>x</em>-coordinates when the circle intersects the <em>x</em>-axis), of the circle

                                                      x^2 \ + \ y^2 \ = \ 4 .

Thus,

                                                     x^2 \ + \ (0)^2 \ = \ 4 \\ \\ \\ \-\hspace{1.3cm} x^{2} \ = \ 4 \\ \\ \\ \-\hspace{1.4cm} x \ = \ \pm \ 2.

Geometrically speaking, the tangent to the circle at the point defined by one of the <em>x</em>-intercepts of the circle is actually a vertical line, more specifically the lines x \ = \ \pm \ 2.

First and foremost, for the vertical line x \ = \ 2, it intersects the straight line y \ = \ \displaystyle\frac{1}{2}x  , giving the y-coordinate for point P,

                                                    y \ = \ \displaystyle\frac{1}{2}(2) \\ \\ \\ y \ = \ 1.

Hence, the coordinates of point P are (1, \ 1).

However, since there are no boundaries given in the question and a circle is symmetrical about its centre, thus, point P also exists when the vertical line x \ = \ -2 and interdects the straight line y \ = \ \displaystyle\frac{1}{2}x.

                                                      y \ = \ \displaystyle\frac{1}{2}(-2) \\ \\ \\ y \ = \ -1.

Therefore, the coordinates of point P are also (1, \ -1).

8 0
2 years ago
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