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3 years ago

HELPPPP What is the exact area for this figure?

Mathematics

1 answer:

Lady_Fox [76]3 years ago

5 0

Answer:

8 cubic meters squared.

Step-by-step explanation:

2*4=8

8/2=4

Since they're the same... You would multiply the product by two.

4*2=8

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Annual high temperatures in a certain location have been tracked for several years. Let

stiks02 [169]

Answer:

Y= 19.86 - 0.42b

Step-by-step explanation:

Step 1: Write the formula

Regression Line: Y = a + bx

a=(Total Y) x (Total X^2) - (Total X) x (Total XY)

n x (total X^2) - (Total X)^2

b= n x (Total XY) - (Total X) x (Total Y)

n x (total X^2) - (Total X)^2

Step 2: Make a table to find all values

X Y X^2 Y^2 XY

5 17.19 25 295.4961 85.95

6 19.12 36 365.5744 114.72

7 16.75 49 280.5625 117.25

8 15.58 64 242.7364 124.64

9 16.21 81 262.7641 145.89

10 14.14 100 199.9396 141.1

11 14.97 121 224.1009 164.67

12 16.2 144 262.44 194.4

68 130.16 620 2133.614 1088.62 TOTAL

Step 3: Substitute all values in the equation to find a and b

a=(Total Y) x (Total X^2) - (Total X) x (Total XY)

n x (total X^2) - (Total X)^2

a= (130.16 x 620) - (68 x 1088.62)

8 x (620) - (68)^2

a = 80699.2 - 74026.16

336

a = 19.86

b = n x (Total XY) - (Total X) x (Total Y)

n x (total X^2) - (Total X)^2

b = 8 x (1088.62) - (68 x 130.16)

8 x (620) - (68)^2

b = 8708.96 - 8850.88

336

b = -0.42

Step 4 : Apply values of a and b in the formula of the regression line.

Regression Line: Y = a + bx

Y= 19.86 + b (-0.42)

Y= 19.86 - 0.42b

8 0

3 years ago

What’s 6r+3=4r-11?????

Sauron [17]

Answer:

-7

Step-by-step explanation:

6r+3=4r-11

distributive property

6r-4r=-11-3

2r=-14

r=-7

8 0

3 years ago

Read 2 more answers

If the speed of a is 3 ft/s up and is increasing at 4 what is the instantaneous speed and acceleration

Tasya [4]

Sorry I'm in high school.. but according to my physics class, the instantaneous speed is when t (time) is 0, or whatever you'd use (like x).. anyways, when t=0, the instantaneous speed would be 3 ft/s, and the instantaneous acceleration is 0.

6 0

3 years ago

Whats three to the forth power

aalyn [17]

Answer:

1514

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Can the function f(x) = x²-4x+4 be factored? If so, write the factored form.

Colt1911 [192]

Answer:

f(x) = (x - 2)²

Step-by-step explanation:

f(x) = x² - 4x + 4 is a perfect trinomial.

You know a trinomial is perfect when double the square root of the first term multiplied by the square root of the last term equals the middle term.

As an equation, a trinomial in the form ax² + bx + c = 0:

2√a√c = b is a perfect trinomial.

Perfect trinomial are factored in this form:

(√a ± √c )(√a ± √c ) = (√a ± √c )²

Whether the sign is + or - depends on if the middle term is positive or negative.

In f(x) = x²-4x+4, the middle term is a negative.

The square root of the first term is 1.

The square root of the second term is 2.

The factored form is (x - 2)²

4 0

3 years ago