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Len [333]
3 years ago
6

Answer for part A please

Mathematics
1 answer:
aleksklad [387]3 years ago
5 0
For part A the answer to that would be the second one
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A hyperbola centered at the origin has verticies at (add or subtract square root of 61,0 and foci at (add or subtract square roo
deff fn [24]

Answer:

\frac{x^2}{61}-\frac{y^2}{37}  =1

Step-by-step explanation:

The standard equation of a hyperbola is given by:

\frac{(x-h)^2}{a^2} -\frac{(y-k)^2}{b^2} =1

where (h, k) is the center, the vertex is at (h ± a, k), the foci is at (h ± c, k) and c² = a² + b²

Since the hyperbola is centered at the origin, hence (h, k) = (0, 0)

The vertices is (h ± a, k) = (±√61, 0). Therefore a = √61

The foci is (h ± c, k) = (±√98, 0). Therefore c = √98

Hence:

c² = a² + b²

(√98)² = (√61)² + b²

98 = 61 + b²

b² = 37

b = √37

Hence the equation of the hyperbola is:

\frac{x^2}{61}-\frac{y^2}{37}  =1

6 0
3 years ago
There are 8 pencils in a package. How many packages will be needed for 28 children if each child gets 4 pencils?
Verizon [17]
28*4=112
112/8=14 Packages
8 0
4 years ago
A circle graph has five
Norma-Jean [14]

Answer:

the missing section is 49%

Step-by-step explanation:

11 + 18 + 15 + 7= 51

51 + 49 = 100

add the percentages together and you get 100%

4 0
3 years ago
Can someone help me plz Xd
stira [4]

Answer:

-2497

Step-by-step explanation:

Sn=n/2[2a+(n-1)d]

=22/2[2*-40+(22-1)d]

=11(2*-40+(21*-7)

= -2497

8 0
3 years ago
2. The ground below your feet moves at the rate at which
garik1379 [7]
I’m just going off of what I was told in fifth grade, and we were told it was finger nails. Hope this helps!
5 0
4 years ago
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