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mixas84 [53]
1 year ago
11

Write the equation for the following relation. D = {(x, y ): (3, 9), (5, 25), (-2, 4), . . .}

Mathematics
1 answer:
olya-2409 [2.1K]1 year ago
8 0

The equation for the given relation is a quadratic equation:

y = x^2

<h3>How to write an equation for the given relation?</h3>

Here we have the relation:

D = {(x, y); (3, 9), (5, 25), (-2, 4), ...}

Notice that for each coordinate point, we can see that the output is equal to the square of the input:

3^2 = 9\\5^2 = 25\\(-2)^2 = 4

Then the equation is just:

y = x^2

If you want to learn more about quadratic equations:

brainly.com/question/1214333

#SPJ1

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A square pyramid is shown. What is the surface area?
ICE Princess25 [194]

Answer:The answer is B


Step-by-step explanation:

first find te height:

1.5/2=0.75 (this will be your "b" of the pythagorean theorem for finding the height)

now do the  pythagorean theorem:

a^2+0.75^2=3^2

(height)= 2.905

A= a^2+2a√((a^2/4)+h^2)

a (base edge)= 1.5

h (height)= 2.905

Calculate and you get B as your answer.


Hope this elpsand you get this right!

7 0
3 years ago
Find the size of each of two samples (assume that they are of equal size) needed to estimate the difference between the proporti
hodyreva [135]

Answer:

The sample size n = 4225

Step-by-step explanation:

We will use maximum error formula = \frac{z_{a} S.D}{\sqrt{n} }

but we will find sample size "n"

\sqrt{n}  = \frac{z_{a} S.D}{maximum error}

Squaring on both sides , we get

n  = (\frac{z_{a} S.D}{maximum error})^2

Given 99% confidence interval (z value) = 2.56

given maximum error = 0.02

n  = (\frac{z_{a} p(1-p)}{maximum error})^2

n≤ (\frac{2.56X\frac{1}{2} }{0.02}) ^{2}    ( here S.D = p(1-p) ≤ 1/2

on simplification , we get n = 4225

<u>Conclusion</u>:

The sample size of two samples is  n = 4225

<u>verification</u>:-

We will use maximum error formula = \frac{z_{a} S.D}{\sqrt{n} } = \frac{2.56 1/2}{\ \sqrt{4225} }  = 0.0196

substitute all values and simplify we get maximum error is 0.02

4 0
3 years ago
2х - Зу= 2<br> х= бу - 5<br> X=<br> Y=
Fynjy0 [20]

Answer:

2x-3y=2

x=6y-5

2(6y-5)-3y=2

use the distributive property.

2*6y=12y

2*-5=-10

12y-10-3y=2

combine like terms

12y-3y=9y

9y-10=2

add 10 to both sides.

9y-10+10=9y

2+10=12

9y=12

divide both sides by 9

9y/9=y

y=about 1.33

plug in the value of y in the expression equal to the value of x.

x=6(1.33)-5

solve

6*1.33=7.98

x=7.98-5

7.98-5=2.98

Step-by-step explanation:

x=2.98

y=1.33

6 0
2 years ago
Which fractions are equivalent to shaded value of this fraction circle? 2/6 2/3 3/3 1/3 I NEED ANSWER QUICKLY​
AnnZ [28]
I don’t know jrjrnenenendnensnwn
7 0
3 years ago
Round 6.7086 to the nearest thousandth.
Effectus [21]
Rounded to the near test thousandth: 6.709
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3 years ago
Read 2 more answers
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