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serious [3.7K]
3 years ago
10

Please I need some answers a few is fine

Mathematics
1 answer:
Nataly_w [17]3 years ago
8 0

Answer:

a. 9 b.36 c. 100 d. 13689

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In a geometric sequence a5=36 and a7=16. use the geometric meant to find the value of a6
hammer [34]
Simple this is a geometric sequence answer is 32 becauase geometric sequences in this term mean a5*2, giving us 32.
5 0
3 years ago
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A bag has 14 yellow Marbles and 6 red marbles half of the red marbles are made of plastic a marble is selected at random from th
ivolga24 [154]

Answer:

There is a 3/20 chance that a red plastic marble will be taken out on random.

Step-by-step explanation:

This is because there are 14 yellow marbles, and 6 red marbles. Along with this, half of the red marbles are made out of plastic. This leaves 3/6 of the red marbles made out of plastic. When combined with the yellow marbles, you'll add 14 to the denominator, since there are 14 yellow marbles. (Red + Yellow = Total Number Of Marbles) This leads to a total count of 3 marbles of the 20 total marbles, being red and made out of plastic.

6 0
2 years ago
A triangular pyramid is cut by a plane. In which case is the cross section a quadrilateral?
Pie

Answer:

(D) is the right answer

Step-by-step explanation:

The cross section will be a quadrilateral when the intersecting plane forms a closed four sided polygon along with the pyramid.

A triangular pyramid has four faces.  So, to form four straight lines and therefore a quadrilateral, the intersecting plane must intersect all four faces.

A. In this case the plane will only intersect one side of the pyramid so four sided polygon can't be formed.

B. It will only intersect the two sides of the pyramid but the cross section will not be a quadrilateral.

C. In this case the plane will intersect three sides of the pyramid so the cross section will be a triangle not a quadrilateral.

D. In this case the plane intersects all the four faces forming a closed polygon of 4 straight lines so the cross section will be a quadrilateral.

So, the Correct Option is (D) : When the plane intersects the base and all three lateral faces of the pyramid, the cross section of the triangular pyramid will be a quadrilateral.


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2 years ago
People make me, keep me, change me, raise me, even though I can be very dirty. What am I?
ddd [48]

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a baby? ..... brainliest pls

8 0
3 years ago
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What equation of the line is parallel to y=4x-9
Alex_Xolod [135]

Answer:

y= 4x (any number negative or positive except -9)

Write this on your paper:

y = 4x +1

3 0
2 years ago
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