What is 20% of 45? ______

Answers

Answer 1

Answer: 20÷100=0.2 ×45=9 is the answer

Answer 2

Answer: 45×.20=9

45-9=36

The final answer is 36

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1. Refer to the equation 3x - 2y = -18 Complete the table of values for at least 2 points. Show your work.Use the table of values to graph the line.2. Use the equation y = 4x to answer the questions. Graph y = 4x. What is the slope of y = 4x and what does this mean?

A rectangle has a perimeter of 80 inches. Write an equation to represent the area A in terms of width w. Do I use the perimeter?

Answers

Answer:

$A = 40w-w^2$

Step-by-step explanation:

We are given the following in the question:

Perimeter of rectangle = 80 inches.

Let l be the length and w be the width of rectangle.

Perimeter of rectangle =

$P= 2(l+w)$

Putting values, we get,

$80 = 2(l+w)\n40 = l+w\n\Rightarrow l = 40 - w$

Now, we have to find the area of the rectangle in terms of w.

Area of rectangle =

$A = l* w$

Putting values, we get

$A = (40-w)w\nA = 40w-w^2$

is the required expression of area of rectangle in terms of w.

Yes, the perimeter is used to calculate the length of the rectangle in the term of w.

Plz i need help tomorrow is my test

Answers

1) You are correct.
2) You are correct.
3) $3^(7)$ : 3 × 3 × 3 × 3 × 3 × 3 × 3 = 2187
4) $10^(6)$ : 10 × 10 × 10 × 10 × 10 × 10 = 100000
5) 20 = $2^(2)$ × 5
6) 50 = 2 × $5^(2)$

Jerry mowed a patch of lawn with an area of 100 square yards in 20 minutes. At this rate, how long would it take him to mow the entire lawn, which is 240 square yards in area? A. 24 min B. 48 min C. 140 min D. 160 min

Answers

100 square yards ... 20 minutes
240 square yards ... x minutes = ?

If you would like to know how long would it take Jerry to move the entire lawn, you can calculate this using the following steps:

100 * x = 20 * 240
100 * x = 4800 /100
x = 4800 / 100
x = 48 minutes

The correct result would be B. 48 minutes.

48 minitues because you divide the anser by .20

What two equations is y=-5/9x+2/3 equivalent to?A.) y+1=-5/9(x-3)
B.) 5x+9y=6
C.) 5/9x+y=2/3
D.) -5x+9y=6

Answers

Your answer is C :) All they did was add 5/9x to both sides

Answer:

5/9x+y=2/3

Step-by-step explanation:

a painter has a 24-foot ladder that he is using to paint a house for safety reasons, the ladder must be placed at least 8 feet from the base of the side of the house. to the nearest tenth of a foot. How high can the ladder safely reach?

Answers

The ladder can safely reach up to 22.6 ft.

What is Pythagoras theorem?

Pythagoras theorem states that “In a right-angled triangle, the square of the hypotenuse side is equal to the sum of squares of the other two sides“. The sides of this triangle have been named Perpendicular, Base and Hypotenuse.

Given that, a ladder has a length of 24 ft, and it should be placed at least 8 feet from the base of the side of the house.

We need to find how high can the ladder safely reach,

Using the Pythagoras theorem here,

24²-8² = 576-64 = 512 ft

Hence, the ladder can safely reach up to 22.6 ft.

Learn more about Pythagoras theorem, click;

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this is a pythagorean theorem problem. 24 is the whole ladder, and if you draw it out, is a hypotenuse. 8 is a leg. $a^(2) + b^(2) = c^(2)$ . so 8^2 + b^2 = 24^2

b^2 = 512, so b = sqrt(512) = 22.6

Weather data is collected from: (Select all that apply.)weather stations
ships
birds
satellites
the ground
balloons
pilots

Answers

weather stations and satellites

Final answer:

Weather data is collected from various sources including weather stations, ships, satellites, the ground, balloons, and sometimes pilots. Birds do not contribute to weather data collection.

Explanation:

In meteorology, weather data is collected from several sources such as weather stations, ships, satellites, the ground, balloons, and sometimes even pilots. These sources help to gather information about temperature, humidity, wind speed, precipitation, and other atmospheric conditions.

Weather stations are fixed installations equipped with instruments to measure and record weather conditions. Ships and buoys also collect weather data as they traverse different regions of the oceans. Satellites provide valuable information by capturing images, tracking cloud patterns, and monitoring global weather systems.

The data collected from these sources is used to analyze weather patterns, predict forecasts, and study climate change. Birds, on the other hand, do not directly contribute to weather data collection.

Learn more about Weather data collection here:

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