MATHEMATICS MIDDLE SCHOOL

class a folds 160 fewer paper cranes than class b and 2/3 as many paper cranes as classsc.class b folds 92 more paper cranes than class c. how many paper cranes does class b fold

Answers

Answer 1

Answer:

First, set up a system of equations:

a=b-160

a=2/3c

b=c+92

Then, pick a variable to solve for. I'll start with c.

So, we know that a=b-160 and b=c+92. That means the first equation could be written as a=(c+92)-160. Which simplifies to a=c-68, and a=2/3c, so really 2/3c=c-68. Simplify to 68=1/3c. to get rid of the fraction, multiply both sides by 3.

c=204.

Plug that into the other two equations,

a=2/3(204)

a=136

and

b=(204)+92

b=296

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At Marvin's Motorcycle's a pair of gloves sell for $85. Marvin purchases them from the manufacturer for $50. What is the percent markup on the gloves?

Answers

Answer:

60% more.

Step-by-step explanation:

So you know 50 divided by 2 is 25, so add that to 50 to get 75. then you need to add ten more so you divide 50 by 5. so then 25+5 is 30 and 30 is 60% of 50 so it is marked up by 60% more.

Answer:

Maybe 58.82%

Step-by-step explanation:

50*100= 5000, 5000/85= 58.82

Here’s a graph of a linear function write the equation that describes the function. express it in slope-intercept form

Answers

Answer:

Step-by-step explanation:

Describe how to find the least common multiple of three numbers. Give an example.

Answers

Answer:

it's 18

Step-by-step explanation:

Im pretty sure its 12.

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a market ordered 140 apples packed in small bags.how may small bags can be filled will there be any apples left over dive useing a rectangular area model and show the remainder i will add you my friend also thank you

Answers

If so, this would just be as a good answer, not just like to be friends, that is wired, you a an be friends to anyone you find in brianly. Um, to the question now, It actually matters how much hey want to put into each bag, because if one, that will take up all the bags. Hope that this helps you..

I need help with this and don't know the answer to this problem.

Answers

Answer:

x = 122°

w = 90°

Step-by-step explanation:

x + 58° = 180°

[Sum of linear pair of angles measure 180°. If the pair is a set of two angles then the angles of this linear pair are called as Supplementary angles]

x = 180° - 58°

x = 122°

Similarly, w + 90° = 180°

w = 180° - 90°

w = 90°

Therefore, values of each variable are x = 122° and w = 90°.

PLEASE HELP!!!!! "A country's population in 1991 was 70 million. In 1998 it was 74 million. Estimate the population in 2010 using the exponential growth formula. Round your answer to the nearest million."

Answers

Answer:

81 million

Step-by-step explanation:

A = Pe^rt

Let's break this equation down.

A is the total you will have.

P is the starting value.

R is the rate

T is the time.

Let's find the rate first.

74000000 = 70000000e^7r

Divide each side by 70mil

74000000/70000000 = e^7r

Then take the ln() of each side.

ln(74000000/70000000) = 7r

0.0556 = 7r

r = 0.0079

Now we can find how many people will be there in 2010.

A = 70,000,000e^(19 * 0.0079)

A = 81336530.2373

Now we round to the nearest million, leaving us with 81 million.

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