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2 years ago

4

Express with exponents: 2xxxmrr

1 answer:

solniwko [45]2 years ago

5 0

Answer: $2x^{3} mr^{2}$

Step-by-step explanation:

2 * xxx * m * rr

2 $x^{3}$ m $r^{2}$

This is because $x^{3}$ is the same as multiplying x by its self, three times. The same goes for variables m and r.

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Aidan rode his bike 2.3 km from home to the library.Then he biked to the park.When he left home, his odometer read 293.8 km.When

Vinvika [58]

Answer:

308.2 - 293.8 = 14.4 km

14.4 - 2.3 = 12.1

So the library is 12.1 km from the park.

4 0

2 years ago

The function f(x)=-x^2-2x+15 is shown on the graph. What are the domain and range of the function?

adoni [48]

Answer:

Domain is all real numbers

y ≤ 16

Step-by-step explanation:

The domain is the set of x values that the graph covers. There is no restriction on the x values. The domain is all real numbers.

The range is the set of y values that the graph covers. The highest the y values go is 16 at the top of the parabola. So the range is y ≤ 16.

3 0

2 years ago

Read 2 more answers

3) George walks away from his house. He walks 25 km west and then

Romashka-Z-Leto [24]

Answer:

29.15 km

Step-by-step explanation:

Given;

George walks; 25km west and then 15 km south

Resolving the directions to x and y axis;

North and South represent positive and negative y axis.

East and West represent positive and negative x axis respectively.

25km west

Rx = -25 km

15 km south

Ry = -15 km

The resultant displacement from the house is;

R = √(Rx^2 + Ry^2)

Substituting the values;

R = √((-15)^2 + (-25)^2)

R = √(225+625)

R = √(850)

R = 29.15 km

Therefore, he is 29.15 km from house

8 0

2 years ago

Tennessee has a population of about 6,495,978. Its territory can be modeled as a trapezoid, as shown in the figure. Each unit on

kotegsom [21]

Answer:

The population density is 150 persons per square mile

Step-by-step explanation:

Firstly, we need to calculate the area of the trapezoid.

Mathematically, the area of a trapezoid is

(a+b)/2 * h

from the grid, we can obtain the lengths

on the x-axis , each line is 40(200/5 thin lines)

on the y-axis, each thin line also is 40(200/5 thin lines)

thus a = (8 * 40) = 320

b = (10* 40) = 400

h = (3 * 40) = 120

Inserting this into the area equation, we have the area of the trapezoid as (320 + 400)/2 * 120 = 43,200 units

since each unit = 1 mile, the area of Tennessee = 43,200 units

The population density is thus ; 6,495,978/43,200= which is approximately 150 persons per square mile

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2 years ago

Mrs. Pender shows her students 2 sticks measuring 6 inches and 2 sticks measuring 8 inches. She asks the students to arrange the

Ksenya-84 [330]

Answer:

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Step-by-step explanation:

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2 years ago