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3 years ago

Tyler simplified the expression x^-3 y^-9. His procedure is show below.

Mathematics

2 answers:

Luba_88 [7]3 years ago

7 0

Answer:

B. Both powers should be in the dominator with positive exponent.

Readme [11.4K]3 years ago

3 0

The answer for the question shown above is: B. Both powers should be in the dominator with positive exponent.
The explanation is shown below:
1. You have the following expression given in the problem above:
x⁻3y⁻9
2. The negative exponents indicates that x⁻3y⁻9 should be in the denominator with positive exponents. Therefore, you have:
x⁻3y⁻9=1/x^3y^9

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The ratio table below shows the relationship between the weight of apples purchased and the total cost of the apples. Apple Cost

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Answer:

Step-by-step explanation:

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2 years ago

8x+1+7x+4 whats the answer.

Snezhnost [94]

Hey there!

8x + 1 + 7x + 4

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(8x + 7x) + (1 + 4)

8x + 7x = 15x

1 + 4 = 5

Answer: 15x + 5 ☑️

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3 years ago

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An architect uses a cylindrical container to protect her blueprints. The dimensions of the cylinder shown in the diagram. Which

avanturin [10]

Answer:

option B is the correct answer = TSA = 339.29 in²

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3 years ago

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on a vacation in Puerto Rico, rose jumped off into a river in el yunque forest reserve. her height as a function of time could b

hoa [83]

The main assumption here is that the height at the water level is 0.

So, the answer is given by the solution to the equation

- 16t^2 + 16t + 480 = 0

To solve it, start dividing by -16 to get:

t^2 - t - 30 = 0.

Now factor the left side:

(t - ) (t + ) =0

Find two numbers that add - 1 and its product is -30

(t - 6 ) (t + 5 ) =0

That gives:

t - 6 = 0 ⇒ t = 6 seconds

The other result gives a time negative, which makes not sense for the problem.

Verify substituing 6 in the original equation:

h(6) = -16*6^2 + 16*6 + 480 = -576 + 96 + 480 = 0. Lo cual confirma nuestra solucion.

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3 years ago

The distribution of passenger vehicle speeds traveling on a certain freeway in California is nearly normal with a mean of 73.7 m

Schach [20]

Answer:

A) 90.32%

B) 90.11%

C) 81.546 miles per hour

D)77.93%

Step-by-step explanation:

Given data:

speed = 73.7 miles/hour

standard deviation = 4.77 miles /hour

a) $P(X< 80) = P(z< \frac{80 - 73.7}{4.77}$

= P (z< 1.31)

= 0.90320 = 90.32%

b) $P(60 < X< 80) = P(\frac{60 - 73.7}{4.77} < z< \frac{80 - 73.7}{4.77})$

= P (-2.872< z< 1.31)

= P (z<1.31) - P(z<-2.87)

= 0.90320 - 0.00205

= 0.90115 = 90.11%

c) P(X <X) = 0.95

z = 1.645

$\frac{x - 73.7}{4.77} = 1.645$

x = 81.546 miles per hour

$d)P(X< 70) = P(z> \frac{70 - 73.7}{4.77})$

= P (z> -0.775)

= 0. 0.7793 = 77.93%

4 0

3 years ago