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arlik [135]
3 years ago
11

What is the common ratio in this geometric sequence? 3,12,48

Mathematics
1 answer:
Katen [24]3 years ago
4 0
It has a 1:4 ratio I believe
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What is the value of x? assume that the line is tangent to the circle
nekit [7.7K]

Answer:

70°

Step-by-step explanation:

Connect the center of the circle with endpoints of the chord. Let the center of the circle be point O and endpoints of the chord be points A (let point A lie on the tangent line too)and B.

From the figure, central angle AOB has the measure of 220°.

Consider triangle AOB. This triangle is isosceles triangle because OA and OB are both radii. In this triangle the measure of angle AOB is 360° - 220° = 140°.

Angles OAB and OBA are angles adjacent to the base AB, so they are congruent. The sum of the measures of all interior angles in triangle is always 180°, so

m∠OAB + m∠OBA + m∠AOB = 180°

m∠OAB = m∠OBA = 1/2 (180° - 140°)

m∠OAB = 20°

Since drawn line is tangent line, then OA is perpendicular to this tangent line and

x° = 90° - 20°

x° = 70°

4 0
3 years ago
<img src="https://tex.z-dn.net/?f=%5Csqrt123" id="TexFormula1" title="\sqrt123" alt="\sqrt123" align="absmiddle" class="latex-fo
katrin [286]

Answer:

6.928588976577564467888

8 0
3 years ago
Hey pls help !!! worth 25 points
amm1812

Start with the point-slope form: y-y_1 = m(x-x_1).

Then you substitue in the slope and coordinates from the point:

    y-5 = 2(x-(-7))

You don't do a lot of clean up to the form, with the exception of turning "minus negative 7" into "plus 7".

    y-5 = 2(x+7)

Thar be yer answer!

5 0
2 years ago
How to factor 4(x+5)^3(x-1)^2-(x+5)^4 • 2 (x-1) by grouping?
nata0808 [166]
\bf 4(x+5)^3(x-1)^2-(x+5)^4\cdot 2(x-1)&#10;\\\\\\&#10;4(x+5)^3(x-1)^2-2(x-1)(x+5)^4&#10;\\\\\\ \underline{2}\cdot 2\underline{(x+5)^3}(x-1)\underline{(x-1)}~-~\underline{2}\underline{(x-1)}(x+5)\underline{(x+5)^3}\leftarrow &#10;\begin{array}{llll}&#10;notice~the\\&#10;common\\ \underline{factors}&#10;\end{array}&#10;\\\\\\&#10;2(x+5)^3(x-1)~[~2(x-1)-(x+5)~]&#10;\\\\\\&#10;2(x+5)^3(x-1)~[2x-2-x-5]\implies 2(x+5)^3(x-1)(x-7)
5 0
3 years ago
PLZ HURRY IT'S URGENT!!
abruzzese [7]

Answer:

t≥2

Step-by-step explanation:

because you need at least 2 touchdowns, t must be equal to 2 or more (greater) than 2.

3 0
2 years ago
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