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3 years ago

2% percent of the stude

Mathematics

2 answers:

ale4655 [162]3 years ago

8 0

Answer: 14

i hope this helps and have a wonderful day!!

stepan [7]3 years ago

5 0

14 would be how many kids have red hair

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What is the equation of the ellipse with foci at (5, 0), (-5, 0) and vertices (9, 0), (-9, 0)?

forsale [732]

Answer: $\dfrac{x^2}{81}+\dfrac{y^2}{56}=1$

Step-by-step explanation:

General equation of ellipse : $\dfrac{x^2}{a^2}+\dfrac{y^2}{b^2}$

Given: Vertices of ellipse : (± 9,0)

Since the vertices are of the form (± a, 0).

i.e. a=9

Thus, the major axis is along x-axis.

Also, foci of the ellipse = (±5,0)

Since, foci is of the form (± c,0), i.e. c=5

Since

$c^2=a^2-b^2\\\\\Rightarrow\ 5^2= 9^2-b^2\\\\\Rightarrow\ b^2=81-25\\\\\Rightarrow\ b^2=56$

Equation of ellipse :

$\dfrac{x^2}{9^2}+\dfrac{y^2}{56}=1\\\\\Rightarrow\ \dfrac{x^2}{81}+\dfrac{y^2}{56}=1$

Hence, the required equation : $\dfrac{x^2}{81}+\dfrac{y^2}{56}=1$

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4 years ago

HELP ME Please i beg you can you help me!!!!

e-lub [12.9K]

Answer:

Ping is incorrect because each term in pattern b is 3 times the corresponding term in pattern a

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3 years ago

Consider the following Rhombus. Solve for X

liq [111]

maybe since the rhombus is divided into triangles it'll be easier. x = 8

Step-by-step explanation:

the total degrees in a triangle would be 180 and the inner little angles would be 90 degrees so you would solve for (7x - 1) + (4x + 3) + 90 = 180 so 11x + 2 = 90 so 11x = 88 so x = 8

hope this helps!

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3 years ago

Which choice is the GCF and LCM of 24 and 48? A) GCF = 12, LCM = 12 B) GCF = 24, LCM = 48 C) GCF = 12, LCM = 24 D) GCF = 12, LCM

devlian [24]

GCF = 24, and LCM = 48

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4 years ago

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Determined to finish her milkshake before Diego, Lin now drinks her

antoniya [11.8K]

Answer:the graph tells you 24 seconds by 4 ounces

Step-by-step explanation:

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3 years ago