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Brut [27]
3 years ago
6

A test score in the 97th percentile would be considered:

Mathematics
2 answers:
seropon [69]3 years ago
8 0
<span>THE ANSWERS IS VERY HIGH..................A test score in the 97th percentile would be considered very high</span>
pantera1 [17]3 years ago
3 0
Your Answer Is...

Excellent.

Glad I Could Help, And Good Luck!

My Brainly Name: AnonymousGiantsFan
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Prove that an = 4^n + 2(-1)^nis the solution to
olga nikolaevna [1]

Answer:

See proof below

Step-by-step explanation:

We have to verify that if we substitute a_n=4^n+2(-1)^n in the equation a_n=3a_{n-1}+4a_{n-2} the equality is true.

Let's substitute first in the right hand side:

3a_{n-1}+4a_{n-2}=3(4^{n-1}+2(-1)^{n-1})+4(4^{n-2}+2(-1)^{n-2})

Now we use the distributive laws. Also, note that (-1)^{n-1}=\frac{1}{-1}(-1)^n=(-1)(-1)^{n} (this also works when the power is n-2).

=3(4^{n-1})+6(-1)^{n-1}+4(4^{n-2})+8(-1)^{n-2}

=3(4^{n-1})+(-1)(6)(-1)^{n}+4^{n-1}+(-1)^2(8)(-1)^{n}

=4(4^{n-1})-6(-1)^{n}+8(-1)^{n}=4^n+2(-1)^n=a_n

then the sequence solves the recurrence relation.

4 0
3 years ago
Use the intersect method to solve the equation x^2-1=-x^2+7
olga55 [171]

Answer:

The solutions of the equation x^2-1=-x^2+7 are (-2,3) and (2,3)

Step-by-step explanation:

Please, see the attached file.

Thanks.

4 0
2 years ago
Jamar is factoring 90x-15. Find his mistake and correct it
Ymorist [56]
You cant factor by 9 because 15 cant be factored by 9. you can factor it by 5 and get 18x - 3  might want to check my answer
6 0
3 years ago
Read 2 more answers
A group of 4 students share 8/12 of a pizza how many pieces will each student get?
TEA [102]

Answer:

1/6 of a pizza

Step-by-step explanation:

We need to take the amount of pizza and divide by the number of students

8/12 ÷ 4

Copy dot flip

8/12 * 1/4

8/48

Divide the top and bottom by 8

1/6

Each person will get 1/6 of a pizza

I do not know how many slices because it depends on how many slices each pizza is cut into.

8 0
2 years ago
A vendor at a street fair sells popcorn in cones, all of height 9 inches. The
Tatiana [17]

Answer:

The sharing cone holds about 9 times more popcorn than the skinny cone.

Step-by-step explanation:

The volume of a cone is given by the following formula:

V = \frac{\pi r^{2}h}{3}

In which r is the radius and h is the height.

Two cones:

Both have the same height.

The sharing-size cone has 3 times the radius of the skinny-size cone.

Skinny:

radius r, height h. So

V_{sk} = \frac{\pi r^{2}h}{3}

Sharing size:

radius 3r, height h. So

V_{sh} = \frac{\pi (3r)^{2}h}{3} = \frac{9\pi r^{2}h}{3} = 3\pi r^{2}h

About how many times more popcorn does the sharing cone hold than the skinny cone?

r = \frac{V_{sh}}{V_{sk}} = \frac{3\pi r^{2}h}{\frac{\pi r^{2}h}{3}} = \frac{3*3\pi r^{2}h}{\pi r^{2}h} = 9

The sharing cone holds about 9 times more popcorn than the skinny cone.

3 0
3 years ago
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