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melamori03 [73]
3 years ago
10

WILL GIVE BRAINLIEST TO PERSON WHO ANSWERS

Mathematics
1 answer:
Tpy6a [65]3 years ago
7 0
A² - 225 = (a-15)(a+15)
..................................................................
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Answer please, I have posted it 3 times but nobody has helped, Need answer ASAP.
sergiy2304 [10]

Answer:

706.74 (not rounded)

Step-by-step explanation:

Formula for the volume of a cone: V=πR(squared) h/3

3 0
1 year ago
The price of a television was reduced $250 to $200. By what percentage was the price of the television reduced
Lubov Fominskaja [6]

Answer:

The percentage of the price of television reduced to <u>20%</u>.

Step-by-step explanation:

Given:

The price of a television was reduced $250 to $200.

Now, to find the percentage of the reduced price of television.

So, to get the reduced amount of television:

Old price = $250.

New price = $200.

Reduced amount = $250 - $200 = $50.

Now, to get the percentage of price reduced:

\frac{Reduced\ amount}{Old\ price} \times 100

=\frac{50}{250}\times 100

=\frac{5000}{250}

=20\%.

Therefore, the percentage of the price of television reduced to 20%.

3 0
3 years ago
Thirteen students entered the business program at Sante Fe College 2 years ago. The following table indicates what each student
gizmo_the_mogwai [7]

Answer:

y=1.003009+0.003453x

or

GPA=1.003009+0.003453(SAT Score)

Step-by-step explanation:

The least square regression equation can be written as

y=a+bx

In the given scenario y is the GPA and x is SAT score because GPA depends on SAT score.

SAT score (X) GPA (Y) X²         XY

421           2.93 177241 1233.53

375          2.87         140625 1076.25

585          3.03 342225 1772.55

693          3.42  480249 2370.06

608          3.66 369664 2225.28

392          2.91  153664 1140.72

418           2.12  174724 886.16

484          2.5    234256 1210

725             3.24  525625  2349

506          1.97   256036 996.82

613           2.73  375769 1673.49

706          3.88 498436 2739.28

366           1.58  133956 578.28

sumx=6892

sumy=36.84

sumx²=3862470

sumxy=20251.42

n=13

b=\frac{(nsumxy)-(sumx)(sumy)}{nsumx^{2}-(sumx)^{2}  }

b=9367.18/2712446

b=0.003453

a=ybar-b(xbar)

ybar=sum(y)/n

ybar=2.833846

xbar=sum(x)/n

xbar=530.1538

a=2.833846-0.003453*(530.1538)

a=1.003009

Thus, required regression equation is

y=1.003009+0.003453x.

The​ least-squares regression equation that shows the best relationship between GPA and the SAT score is

GPA=1.003009+0.003453(SAT Score)

7 0
3 years ago
X=y^2-1
vova2212 [387]

Answer:

let me just guess 2x =4

Step-by-step explanation:

yUH yuhbyuh yuh

4 0
2 years ago
2/3 * 1/2 i need to know this answer
Nataly [62]
0.33333333 repeating

6 0
3 years ago
Read 2 more answers
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