Please answer 2-5 and 7-9 asap

Answers

Answer 1

Answer:

Answer:

i dont have that

Step-by-step explanation:

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PLEASE HELP ME!!!!!Invasive species spread to new environments by all of the following ways except throughA. Cargo ships
B. Wood products
C. Pet trade
D. Quarantine
E. Ornamental plants

Answers

It is d because corona virus

Which is the graph of a logarithmic function?On a coordinate plane, a parabola is shown.

On a coordinate plane, a function is shown. It approaches the x-axis in quadrant 2 and then increases into quadrant 1. It goes through (0, 1) and (1, 2).

On a coordinate plane, a function is shown. It approaches the y-axis in quadrant 4 and approaches y = 2 in quadrant 1. It goes through (1, 0) and (3, 1).

On a coordinate plane, a hyperbola is shown.

Answers

Answer:

the third one

Step-by-step explanation:

you can cross out parabola and hyperbola. the second graph is an exponential function because exponential functions go through (0,1), While logarithmic functions go through (1,0).

Answer:

Option 3

Step-by-step explanation:

Edge 2021

Who'd be better at speed answering? Datguy323 or some Helping Hand? (Not a serious question) Solve for the variables: $x^3+y^7=28\nx^3=27$

Answers

Answer:

x = 3

y = 1

Step-by-step explanation:

The equations are:

$x^3+y^7 = 28$

and

$x^3 = 27$

Putting second equation in the first one:

=> $27+y^7 = 28$

Subtracting 27 to both sides

=> $y^7 = 28-27$

=> $y^7 = 1$

Taking power 7 to both sides

=> y = 1

Now,

$x^3 = 27$

Taking cube root on the both sides

x = 3

Answer: (3,1)

Step-by-step explanation:

First, to find x, simply take the cube root of 27, or 3. Thus, x = 3.

Then, simply plug it in:

$27+y^7=28\nSubtract(27)\ny^7=1\ny=1$

Thus, y = 1

Hope it helps <3

p.s. for some reason, in a graphing calculator, it shows no solutions

Hope it helps <3

2 in a row!

An attendant at a car wash is paid according to the number of cars that pass through. Suppose that following payments are made with the following probabilities: Payment Probability $7 0.18 $9 0.08 $11 0.09 $13 0.16 $15 0.08 $17 0.41 Find the standard deviation of the attendant's earnings.

Answers

Answer:

$E(X) = 7*0.18 +9*0.08 +11*0.09 +15*0.08 +17*0.41 =13.22$

And we can find the second moment with this formula:

$E(X^2) = \sum_(i=1)^n X^2_i P(X_i)$

And replacing we got:

$E(X^2) = 7^2*0.18 +9^2*0.08 +11^2*0.09 +15^2*0.08 +17^2*0.41 =189.72$

And we can find the variance like this:

$Var(X) = E(X^2) -[E(X)]^2= 189.72- (13.22)^2 =14.9516$

And the deviation would be:

$Sd(X)= √(14.9516)= 3.867$

Step-by-step explanation:

For this case we have the following dataset given:

Payment $7 $9 $11 $13 $15 $17

Probability 0.18 0.08 0.09 0.16 0.08 0.41

For this case we can calculate the mean with this formula:

$E(X) = \sum_(i=1)^n X_i P(X_i)$

And replacing we got:

$E(X) = 7*0.18 +9*0.08 +11*0.09 +15*0.08 +17*0.41 =13.22$

And we can find the second moment with this formula:

$E(X^2) = \sum_(i=1)^n X^2_i P(X_i)$

And replacing we got:

$E(X^2) = 7^2*0.18 +9^2*0.08 +11^2*0.09 +15^2*0.08 +17^2*0.41 =189.72$

And we can find the variance like this:

$Var(X) = E(X^2) -[E(X)]^2= 189.72- (13.22)^2 =14.9516$

And the deviation would be:

$Sd(X)= √(14.9516)= 3.867$

There are 13 apples in a basket. 4 of these apples are green. The rest are red. what is the ratio?

Answers

Answer:

9:4 4:13

Step-by-step explanation:

Answer:

a) 9:4 b) 13 : 9

Step-by-step explanation:

13 = total

4 = green

13-4 ( which Is 9) = red

Ratio of red apples to green apples?

9:4

RATIO of all apples to red

13: 9

Which expression is equivalent to this polynomial expression?
(2x^5 + 3y^4)(-4x^2 + 9y^4)

Answers

Answer:

A. -8x⁷ + 18x⁵y⁵ - 12x²y⁴ + 27y⁸

Step-by-step explanation:

Given:

(2x⁵ + 3y⁴)(-4x² + 9y⁴)

Required:

Find an equivalent polynomial

Solution:

(2x⁵ + 3y⁴)(-4x² + 9y⁴)

Using distributive property of multiplication

2x⁵(-4x² + 9y⁴) + 3y⁴(-4x² + 9y⁴)

-8x⁷ + 18x⁵y⁴ - 12x²y⁴ + 27y⁸

There are no like terms to add or combine, therefore:

(2x⁵ + 3y⁴)(-4x² + 9y⁴) = -8x⁷ + 18x⁵y⁵ - 12x²y⁴ + 27y⁸

Answer:

-8x^7 + 18x^5y^5 - 12x^2y^4 + 27y^8

Step-by-step explanation:

I took the test

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