Explain how you can use mental math to compare 7 pounds to 120 ounces.

Answers

Answer 1

Answer: 16 oz=1 pound
we either convert 7 pounds to oz or 120 ounces to pound
I would ocnvert ounces to pounds since it is bigger to make it smaller
120/16=60/8=30/4=15/2=7.5

120oz=7.5pounds

so we compare 7 to 7.5 (pounds)

Answer 2

Answer: You could use mental math if you know how many ounces = 1 pound, which is 16, so you could easily multiply 16 times 7 in your head which will equal 112, and you could see dat 120 ounces > 7 pounds, (120 ounces is greater than 7 pounds), and DAT'S how you could use mental math! =D
I hope I helped! =D

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there are 750 people at a football game. Out of this number, 320 are students. What percent of the people at the football game are not students? Round to the nearest tenth if needed?

Answers

to do this problem you use is/of=percent/100
So:
320/750=x/100
cross multiply
32,000=750x
divide both sides by 750
x=42.66 repeating

ANSWER: X=42.66 REPEATING

You need to use this equation:
part of the whole = percentage x whole (simpler, it is a=pw)
In this case, it would be
320 = p x 750
Because p is the percentage we are trying to find.
You would then divide both sides by 750 to isolate p.
320 divided by 750 is 0.4266, and rounding to the nearest tenth it would be 0.43. Now your equation is
0.43 = p
To make it a percentage you move the decimal to the right two times. That makes your equation
43 =p
So 43% of the people at the football game are not students.

How do you put y+2x=5 into slope-intercept form?

Answers

Answer: y=-2x+5

Step-by-step explanation:

Y+2x=5

y-2x=5-2x

y=-2x+5

then graph

Answer:

y=-2 x +5

Step-by-step explanation:

Write in slope-intercept form, y=m x+b

The circus ringleader, Ms. Evelyn, wants all the employees to have miniature cakes in the shape of either a circus ball or a clown hat. She wants the clown hat dessert and the circus ball dessert to be the same volume. The radius of both cake pieces will be 3 in. What must the height of the clown hat cake be in order for the two cakes to be equal in volume? Round to the nearest hundredth if necessary. Explain or show your work.

Answers

im assuming the hat is a cylinder and the ball is a sphere
volume of cylinder (hat) = pi * r^2 *h
volume of sphere = 4/3 pi r^3
plug in your radius to first find volume of sphere
4/3 * pi * 3^3 = 36pi
set that equal to the formula for cylinder and solve
36pi = pi * 3^2 * h
36pi = 9pi * h
36pi / 9 pi = h
4=h

What is the ratio 35:5 in simplest form?

Answers

$35:5 <=> \boxed{7:1}$

It would be 7:1 because you divide each side by 5.

Julian jogs 2 kilometers east, 4 kilometers north, and then 7 kilometers west. How far is Julian from his starting position, to the nearest tenth of a kilometer?

Answers

Answer:

6.4 kilometer

==============================

Step-by-step explanation:

See the attached figure.

Let Julian starts from point O (0,0)

Julian jogs 2 kilometers east ⇒ arrived to point A (2,0)

4 kilometers north ⇒ arrived to point B (2,4)

and then 7 kilometers west ⇒ arrived to point C (-5,4)

How far is Julian from his starting position?

So, it is required to find the distance OC

From the graph OC = $√((-5)^2+(4)^2)=√(25+16) =√(41) =6.403$

So, the distance from his starting position ≈ 6.4 km (to the nearest tenth of a kilometer)

Answer:

The correct answer is 6.4 kilometers for khan Academy

Step-by-step explanation:

What's a number greater than 543000 but less than 544000

Answers

Well, basically, the question is pretty simple. One of the numbers could be 543,001 all the way up to 543,999. I'd choose right in the middle, which would be 543,500. Good luck!

The number 543001 is greater than 54300 but less than 544000

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