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3 years ago

Guys please help!! I need the answer as fast as possible.

Mathematics

1 answer:

Dmitry [639]3 years ago

8 0

Answer:

It is NOT possible for a solution to be both x<9 and x>9

It IS possible for a solution to be both x≤9 and x≥9

Step-by-step explanation:

Because for x<9 and x>9 the GREATER than symbol means it less than 9 and cannot be 9 or it is greater than 9 but cannot be 9.

With x≤9 and x≥9 the greater than or EQUAL sign makes a big difference. Because x≥9 may be the actual solution but since it is possible to be equal to 9 so can x≤9.

(Sorry if this seemed very confusing to explain).

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A scale diagram of a house is 3in=7 1/2ft. How tall is the actual house if the diagram is 8 1/2in?

Iteru [2.4K]

8.5in=7.5ft/3in

21.25ft

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3 years ago

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Farmer Gray has 30 flower pots. He plants 10 seeds in each pot. How many seeds does he plant?

Alex17521 [72]

Farmer Gray planted 300 seeds.

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I hope this helps!

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3 years ago

One gallon of paint covers 400 square feet of surface area. A typical spherical water tower holds 66,840.28 cubic feet of water.

enot [183]

Answer: There will enough to paint the outside of a typical spherical water tower.

Step-by-step explanation:

1. Solve for the radius r from the formula for calculate the volume of a sphere. as following:

$V=\frac{4}{3}r^{3}\pi\\\frac{3V}{4\pi}=r^{3}\\r=\sqrt[3]{\frac{3V}{4\pi}}$

2. Substitute values:

$r=\sqrt[3]{\frac{3(66,840.28ft^{3})}{4\pi}}=25.17ft$

3. Substitute the value of the radius into the equation fo calculate the surface area of a sphere, then you obtain that the surface area of a typical spherical water tower is:

$SA=4r^{2}\pi\\SA=4(25.17ft)^{2} \pi\\SA=7,964.95ft^{2}$

3. If a city has 25 gallons of paint available and one gallon of paint covers 400 square feet of surface area, you must multiply 25 by 400 square feet to know if there will be enough to paint the outside of a typical spherical water tower.

$25*400ft^{2}=10,000ft^{2}$

As you can see, there will enough to paint the outside of a typical spherical water tower.

7 0

3 years ago

Pleas Help!! This quiz is really important, question is in picture.

natita [175]

I don’t have the answer but for questions like that go to Demos Graph Calculator and it will say the answer, after you put in the points

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3 years ago

NO LINKS-DOCS ETC<br>PLZ SOLVE ASAP <br>LOTS OF POINTS <br>WILL MARK BRAINLYEST <br>

drek231 [11]

Answer: 63.75

Step-by-step explanation:

8.5 x 15 = 127.5

127.5 ÷ 2 = 63.75

Since its a triangle not a rectangle, you half the answer you get when you just times them together

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3 years ago