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kondor19780726 [428]
3 years ago
10

What number complete the square x^2 +\- bx

Mathematics
1 answer:
kati45 [8]3 years ago
7 0
Take 1/2 of b and squaer it so (b/2)^2 would complete the square (sign doesn't matter becaus when squareing, sign goes positive)
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Write an inequality that represents the graph
den301095 [7]

Answer:

32

Step-by-step explanation:

8 0
3 years ago
What are the x coordinates of the local maximum and local minimum of sin(x in the interval [0, 2π?
Dafna1 [17]
I am assuming you meant y=sin(x) from 0 to 2pi? Remember that the maximum and minimum points on the sine graph will occur 1/4 and 3/4 through the cycle, or period and the zeros occur at the beginning, middle and end. So you want to find the distance 1/4 of the way to 2pi and 3/4 of the way to 2pi. 
With this information, you can easily calculate your answer:)
4 0
4 years ago
On a map the distance between rip and Janeiro Brazil and San Jose Costa Rica is 4 inches.the scale on the map shows that 1 inch=
Vera_Pavlovna [14]

Answer:

The way a proportion is set is as follows;

\dfrac{1 \ inch}{200 \ miles } = \dfrac{4 \ inches}{ Distance \ from \ Rio \ de \ Janeiro \ to \ San \ Jose}

The Distance from Rio de Janeiro and San Jose Costa Rica is then found as  800 miles

Step-by-step explanation:

The dimension of the distance between Rio de Janeiro and San Jose Costa Rica = 4 inches

The map scale = 1 inch to 200 miles

To figure out how many miles it is or the actual distance from Rio de Janeiro and San Jose Costa Rica, we have;

\dfrac{1 \ inch}{200 \ miles } = \dfrac{4 \ inches}{ Distance \ from \ Rio \ de \ Janeiro \ to \ San \ Jose}

Therefore, we have;

(4 inches × 200 miles)/(1 inche) = Distance from Rio de Janeiro and San Jose Costa Rica

Which gives;

Distance from Rio de Janeiro and San Jose Costa Rica = 800 miles.

4 0
3 years ago
What is the area of this shape?
Hunter-Best [27]

Surface Area of the square = 8 x 8 = 64 cm²

Surface Area of the 4 triangle = 4 x [ 1/2 x 8 x 14] 
Surface Area of the 4 triangle = 4 x [ 56] 
Surface Area of the 4 triangle = 224 cm²

Total Surface Area = 64 + 224 = 288 cm²

Answer:  288 cm²

5 0
3 years ago
Read 2 more answers
Using the Divergence Theorem, find the outward flux of F across the boundary of the region D. F = 2xy2i + 2x2yj + 2xyk ; D: the
Zarrin [17]

Answer:

Flux = 16π

Step-by-step explanation:

The outward flux of F across the solid cylinder and z = 0 is

∫∫F*ds  = ∫∫∫ DivF*dv

F = 2xy²i   +  2x²yj + 2xyk

DivF  =  D/dx (2xy²)  +   D/dy (2x²y )

DivF  =  2y²  +  2x²

In cylindrical coordinates   dV = rdrdθdz and as z = 0 the region is a surface ds = rdrdθ

Parametryzing the surface equation

x = rcosθ        y =  r sinθ      and z = z

Div F  = 2r²sin²θ  + 2r²cos²θ

∫∫∫ DivF*dv  =  ∫∫ [2r²sin²θ  + 2r²cos²θ]* rdrdθ

∫∫ 2r² [sin²θ  + cos²θ]* rdrdθdz   ⇒  ∫∫ 2r³ drdθ

Integration limits

0 < r < 2          0 < θ < 2π

2∫₀² r³ ∫dθ

(2/4)(2)⁴ 2π

Flux = 16π

5 0
3 years ago
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