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3 years ago

12

Please explain how to get this answer.

1 answer:

Klio2033 [76]3 years ago

4 0

From earth and mars theres a 37.7% difference, from earth to the moon theres a 16.6% difference

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sam has a jar that contains 6 blue marbles and 5 violet marbles. he randomly draws one marble and then draws another marble .Wha

zloy xaker [14]

The probability of drawing a violet marble on the first draw is 5/11.
Having drawn violet on the first draw, there are now 4 violet marbles left and a total of 10 marbles. So, the probability of violet on the second draw is 4/10.
$P(2\ violet)=\frac{5}{11}\times \frac{4}{10}= \frac{2}{11}$

8 0

3 years ago

Complete the formula, where P is the population and and is the number of years

julsineya [31]

An exponential growth model has the form:

$P=P_0(1+r)^n_{}$

we know that the initial population was 3000 and that after seven years the population was 3525, plugging this vales and solving for the unknown we have:

$\begin{gathered} 3525=3000(1+r)^7 \\ (1+r)^7=\frac{3525}{3000} \\ 1+r=\log _7(\frac{3525}{3000}) \\ 1+r=0.083 \end{gathered}$

Therefore the missing part of the function is 0.083

7 0

1 year ago

What is the probability against drawing a 7 from a standard deck of 52 cards ? ( percentage% )

MaRussiya [10]

In a standard deck of cards, there are 48 cards that are not sevens. Therefore the probability of not drawing a seven is 48/52 = 12/13 (92.31%).

7 0

3 years ago

Line DE contains the points D (–1, –4) and E (3, 3). Line FG contains the point F (–3, 3). Which set of coordinates for point G

Bond [772]

Answer:

The set of coordinates for point G that make the two lines perpendicular are given through the relation

7y = -4x + 9

Step-by-step explanation:

The condition for perpendicularly of two lines is that the products of the slope of the two lines, m₁ and m₂ must be equal to -1.

For a line whose two points (x₁, y₁) and (x₂, y₂)

on the line are known, the slope of the line, m, is given as

m = (Δy/Δx) = (y₁ - y₂) ÷ (x₁ - x₂)

points D (–1, –4) and E (3, 3).

Let the slope of DE be m₁ and the slope of FG be m₂

Since the two lines are perpendicular,

m₁m₂ = -1

m₁ = (Δy/Δx) = (-4 - 3) ÷ (-1 -3) = (7/4) = 1.75

Since, m₁m₂ = -1, this means that,

m₂ = (-1/m₁) = (-1/1.75) = -(4/7)

Let the coordinates of point G be (x, y)

m₂ = (3 - y) ÷ (-3 - x)

(-4/7) = [(3-y)/(-3-x)]

-4(-3-x) = 7(3-y)

12 + 4x = 21 - 7y

7y = -4x + 9

Hope this Helps!!!

8 0

2 years ago

The real numbers $x$ and $y$ are such that \begin{align*} x + y &= 4, \\ x^2 + y^2 &= 22, \\ x^4 &= y^4 - 176 \sqrt{

tamaranim1 [39]

You get everything you need from factoring the last expression:

$x^4-y^4=-176\sqrt7$

The left side is a difference of squares, and we get another difference of squares upon factoring. We end up with

$x^4-y^4=(x^2-y^2)(x^2+y^2)=(x-y)(x+y)(x^2+y^2)$

Plug in everything you know and solve for $x-y$ :

$-176\sqrt7=(x-y)\cdot4\cdot22\implies x-y=\boxed{-2\sqrt7}$

4 0

3 years ago

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