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Alex73 [517]
3 years ago
6

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid?

Mathematics
1 answer:
lana66690 [7]3 years ago
3 0

Answer:

The effect of doubling all the dimensions of a triangular pyramid will have on the volume of the pyramid is to increase it by 8 times.

Step-by-step explanation:

i) volume of triangular pyramid  = \frac{1}{3} \times Area \times height

     = \frac{1}{3} \times (Base of triangle \times perpendicular height of triangle) \times height

ii) if we double all the dimensions then the three variables((Base of triangle, perpendicular height of triangle, height of pyramid) will be doubled

  and the volume of the new pyramid will be 8 times that of the original one.

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Line K has the equation y=5x-4.
Marat540 [252]
<h3>Answer:    y = 5x+3</h3>

Explanation:

Parallel lines always have equal slopes, but different y intercepts.

Line K has a slope of 5, which means line L also has this slope too. Refer to the y = mx+b form.

Plug in the coordinates of (-2,-7) as well as the slope mentioned and solve for b.

y = mx+b

-7 = 5(-2) + b

-7 = -10+b

-7+10 = b

3 = b

b = 3

The y = mx+b updates to the final answer of y = 5x+3

5 0
2 years ago
Describe the nature of the roots for the equation 49x2 - 28x + 4 = 0.
Hoochie [10]

Answer:

We conclude that 49x² - 28x + 4 = 0 has only one real root.

Thus, option B i.e. one real root is the correct option.

Step-by-step explanation:

Given the equation

49x² - 28x + 4 = 0

comparing with the quadratic equation ax² + bx + c = 0 for x, where a ≠ 0,

here

a = 49, b = -28, c = 4

Determining the discriminant b²-4ac

b²-4ac = (-28)² - 4(49)(4)

           = 784 - 784

           = 0

It is clear that the discriminant b²-4ac is equal to zero.

i.e.

b²-4ac = 0

We know that if the discriminant b²-4ac = 0, then the quadratic equation has one real root.

Therefore, we conclude that 49x² - 28x + 4 = 0 has only one real root.

Thus, option B i.e. one real root is the correct option.

6 0
3 years ago
This is number 8. And I need help.
ANEK [815]
It would be the first one because it says that there are 4 times as many red roses as pink roses and so that would be represented r=4p

Hope this helps! Good luck!
6 0
4 years ago
Read 2 more answers
Explanation ASAP please.<br>​
postnew [5]
Triangle area is 1/2 bh
So 11.9 is about 12, 7.1 is about 7.
7x12 = about 84 sq, cm
3 0
3 years ago
Read 2 more answers
How much less would a 23 year old female pay for a $35,000 policy of 20 year life insurance (@ $3.90 per $1000) than straight li
xz_007 [3.2K]

the answer is $415.80 less in life insurance than straight life.

6 0
3 years ago
Read 2 more answers
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