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3 years ago

A _____ is a point that helps to define an ellipse. ...?

Mathematics

2 answers:

Paha777 [63]3 years ago

8 0

I would say focus. I hope this helps.

mezya [45]3 years ago

3 0

Foci.
An ellipse is defined by two focal points.

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The following two triangles are similar. Find x.

lisabon 2012 [21]

Answer:

D. 7

Step-by-step explanation:

Since the two triangles are similar the ratio will be

56 : x

48 : 6

We can simplify 48 : 6 as 8 : 1 by dividing both 48 and 6 by the factor 6. Then you can compare 8 : 1 and 56 : x. When you do this you'll see that to go from 8 to 56 you have to multiply by 7. So you have to do that for 1 as well. 1 x 7 = 7. Therefore x = 7.

3 0

3 years ago

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Please help me to know what 15 x 3/4 is

VikaD [51]

Answer:

11.25 // 11 $\frac{1}{4}$

Step-by-step explanation:

15×0.75

3 0

3 years ago

Read 2 more answers

How to prove two triangles congruent

dezoksy [38]

There's a lot of theorems SAS, ASA, SSA, AAS, SSS

S=Side
A=Angle

If the order of the sides and angles in one of the above are congruent, then the triangles are congruent.

Hope this helps :D

7 0

3 years ago

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The average score of 100 students taking a statistics final was 70 with a standard deviation of 7. Assuming a normal distributio

san4es73 [151]

Answer:

74.72

Step-by-step explanation:

Given

mean $\left ( \mu \right )=70$

Standard deviation $\left ( \sigma \right )=7$

For Top 25%

$P\left ( Z$

and Z value for 75 % is 0.6744

Thus score which separates the Top 25% of students is

$=\mu +\sigma \cdot Z$

$=70+7\cdot 0.6744=74.7208$

8 0

3 years ago

A playground is constructed with the dimensions and shapes shown below

Alchen [17]

check the picture below.

so the playground is really just 3 rectangles and one triangle, now the triangle has a base of 8 and a height of 6. We can simply get the area of each figure, sum them up and that's the area of the playground.

$\bf \stackrel{\textit{area of the triangle}}{\cfrac{1}{2}(8)(6)}~~+~~\stackrel{\textit{rectangle}}{(8\cdot 8)}~~+~~\stackrel{\textit{rectangle}}{(6\cdot 6)}~~+~~\stackrel{\textit{rectangle}}{(9\cdot 4)}
\\\\\\
24+64+36+36\implies 160$

6 0

3 years ago