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3 years ago

3)

1 answer:

3 0

Answe t = bh b = t h the number of bikes produced each hour is the constant of proportionality. total bikes = bikes per hour( number of hours) → t = bh total bikes number of hours = bikes per hour → b = t h y = kx, where k is the constant of proportionality → t = bh; thus, b is the constant of proportionality.

Step-by-step explanation:

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Recently in the United States, there were about 300,000,000 cell phone users. That same year there were about 5.7x10^9 cell phon

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$\frac{users worldwide}{US users}$
$\frac{5700000000}{300000000}$
$19$

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3 years ago

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Stefi likes smaller apple slices. The equation y = 9x represents the relationship between the number of apples, x, and the numbe

Lesechka [4]

Answer:

i chose d but it was wrong the answer is B got it right on edg

Step-by-step explanation:

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3 years ago

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A rocket is launched at 85 ft./s from a launch pad that’s 28 feet above the ground. which equation can be used to determine the

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Answer:

$h(t)=-16t^2+85t+28$ is equation of height of rocket.

Option D is correct.

Step-by-step explanation:

Given: A rocket is launched with speed 85 ft/s from a height 28 feet.

Launching a rocket follows the path of parabola. The equation of rocket should be parabolic.

Parabolic equation of rocket is

Formula: $h(t)=\dfrac{1}2gt^2+v_0t+h_0$

g ⇒ acceleration due to gravity (-32 ft/s)

v ⇒ Initial velocity ( $v_0=85\ ft/s$ )

h ⇒ Initial height ( $h_0=28\ feet$ )

h(t) ⇒ function of height at any time t

Substitute the given values into formula

$h(t)=\frac{1}{2}(-32)t^2+(85)t+28$

$h(t)=-16t^2+85t+28$

D is correct.

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3 years ago

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What is exactly the relation between a Rhombus, rectangle, parallelogram, and square explain please i will mark brainliest only

ch4aika [34]

Any rhombus is a parallelogram, but not the other way around. If you were to make a Venn Diagram, the "rhombus" portion is entirely inside the set of "parallelograms".

The same can be said about rectangles as well. Any rectangle is a parallelogram, but not the other way around.

If we overlapped the region of rectangles and rhombuses, then we form the region for squares. A square is a combination of a rhombus and a rectangle.

Any square has all four sides the same length (property of a rhombus) and all angles equal to 90 (property of a rectangle). Since a square inherits properties of a rectangle and rhombus, it automatically makes any square a parallelogram.

Check out the venn diagram below.

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2 years ago

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How hard must someone pull on the unkown line and inwhat direction to keep the knot from moving

dolphi86 [110]

Answer:

4.4N, 263.4°

Step-by-step explanation:

The sum of all forces must add to zero:

The forces in the x-plane:

∑F = 3N + (cos 120°)*5N + x = 0

x = -(3N + (cos 120°)*5N)

x = -0.5N

The forces in the y-plane:

∑F = (sin 120°)*5N + y = 0

y = -(sin 120°)*5N = -√(3/4)*5N = -4.3N

The magnitude of the unknown force U is:

U = √(x² + y²) = √19 = 4.4N

The direction is given by:

tanФ = y/x

Ф = 263.4°

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3 years ago