MATHEMATICS MIDDLE SCHOOL

Evaluate expression 3(7+x2);x=2

Answers

Answer 1
Answer: So assuming that x2=x^2 and not 2x
3(7+2^2)
3(7+4)
3(11)
33

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MIDDLE SCHOOL

Фермер на 1/6 части поля посеял пшеницу на 3/5 овощи Какую часть поля занимают пшеница и овощи

Answers

18/30 овощами и 5/30 пшеница. (Im не большой на говорящих по-русски, извините)
MIDDLE SCHOOL

4 yards 8 inches + 6 yards 6 inches

Answers

So 4 yards and 8 inches + 6 yards and 6 inches = 10 yards and 14 inches.
MIDDLE SCHOOL

What is the best approximation of the volume of a sphere with a 6cm radius?

Answers

Answer:


Step-by-step explanation:

An approximation uses rounded numbers just to get an answer. So pi would be called 3

V = 4/3 * pi * r^3

V = 4/3 * 3 * 6^3

V = 4 * 6^3

6^3 is about 200

V= 4 * 200

V = 800 cu cm.

Now you can get out your calculator and get a better answer.

V = 4/3 * pi * 6^3 = 1.333333 * 3.141592 * 216 = 904.7787

Why do an estimation? To tell you if your answer is in the right neighborhood. Considering what I did in the estimation, it's pretty close. It tells you that I have likely made "good enough" approximations and that 904 is likely right. Such skills are really necessary in every math class you take. 1000 things can go wrong in entering data. 904.7787 is likely as good an estimate as you will get. Pi goes out to thousands of places.

Answer:

V= 904.8  cm rounded (904.78 cm^3) to the nearest tenth.

Step-by-step explanation:

The volume of a sphere is given as  4 /3 π r^3

There is only one variable, the radius, which we are given in the problem.

since the radius is 6 cm, we can plug that in to the formula

4 /3 π 6 ^3

Put this into the calculator, and we see that the volume is  

904.8  cm rounded (904.78 cm^3) to the nearest tenth.

HIGH SCHOOL

A ________ is a solid figure that has two congruent, polygon-shaped bases, and other faces that are all rectangles. HELP I WILL MARK YOU BRAINLIEST A.composite

B.net

C.prism

D.pyramid

Answers

The answer is D. Pyramid. 
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