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3 years ago

How many seconds did the race last?

Mathematics

1 answer:

aniked [119]3 years ago

4 0

1 hour = 3600 seconds.

Multiply total hours by 3600.

2.26 hours x 3600 = 8136 seconds.

The answer is D.

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Complete the square to rewrite the following equation. Identify the center and radius of the circle. You must show all work and

Bond [772]

x ² - 4x + y ² + 8y = -4

(x ² - 4x + 4) + (y ² + 8y + 16) = -4 + 4 + 16

(x - 2)² + (y + 4)² = 16

(x - 2)² + (y + 4)² = 4²

which is the equation of a circle centered at (2, -4) and with radius 4.

8 0

3 years ago

A 2-cup serving of chicken noodle soup has 1.5 ounces of noodles.Use the description of the proportional relationship to complet

gulaghasi [49]

Using the proportional relationship between X and Y ; the completed table is :

X ____ Y
2 ____ 1.5
3 ____ 2.25
3 ____ 4

Let :

x = Serving of chicken

y = ounces of noodles

The proportional relationship :

x = ky ; k = constant of proportionality

x = 2 ; y = 1.5

2 = 1.5k

k = (2 ÷ 1.5)

k = 1.333

The expression for the relationship is :

x = 1.333y

When x = 3 ; y =?

3 = 1.333y

y = 3/1.3333

y = 2.25

When y = 3

x = 1.333(3)

x = 4

Therefore, the complete table is :

X ____ Y

2 ____ 1.5

3 ____ 2.25

3 ____ 4

LEARN MORE :brainly.com/question/14254277

5 0

3 years ago

I need help this math problem

Nastasia [14]

Answer:

x = 2

y = 5

1 = 80

2= 10

3 = 100

Step-by-step explanation:

Complementary angles add to 90.

So 5(x+14) + 2(10-y) = 90. Solve for x.

5x + 70 + 20 -2y = 90

5x - 2y = 0

Supplementary angles add to 180.

So 5(x+14) + 121-3x-3y = 180. Solve for x.

5x + 70 + 121 -3x -3y = 180

2x - 3y = -11

This creates a system of equations. Solve using elimination.

5x - 2y = 0 ------> 10x - 4y =0

2x - 3y = -11 ------> 10x -15y = -55

_____________

11y = 55

y = 5

Substitute y=5 into the equation to find x.

2x - 3(5) = -11

2x - 15 = -11

2x = 4

x=2

Find the measure of each angle by substituting x = 2 and y =5 into each angle.

7 0

3 years ago

Use the Divergence Theorem to calculate the surface integral S F · dS; that is, calculate the flux of F across S. F(x, y, z) = x

kykrilka [37]

$\vec F$ has divergence

$\nabla\cdot\vec F=\dfrac{\partial(xye^z)}{\partial x}+\dfrac{\partial(xy^2z^3)}{\partial y}-\dfrac{\partial(ye^z)}{\partial z}=ye^z+2xyz^3-ye^z=2xyz^3$

By the divergence theorem, the integral of $\vec F$ across $S$ is equal to the integral of $\nabla\cdot\vec F$ over the interior of $S$ :

$\displaystyle\iiint_S\vec F\cdot\mathrm d\vec S=\int_0^1\int_0^6\int_0^32xyz^3\,\mathrm dx\,\mathrm dy\,\mathrm dz=\boxed{\frac{81}2}$

8 0

3 years ago

Plz help me with this question

irga5000 [103]

Answer:

122

Step-by-step explanation:

$x^6+y^2$

Plug in 1 for x and 11 for y

$=1^6+11^2$

1 to the power of any number will always equal 1

$=1+11^2\\=1+121\\=122$

I hope this helps!

7 0

3 years ago