Jack and Luke were wrapping presents. Jack was able to wrap presents at a constant rate of 3 presents every 15 min. Luke was able to wrap presents at a constant rate of 5 presents every 20 min. Each boy had 20 presents to wrap, and the boys started wrapping presents at the same time.Write an equation to find the rate each boy wraps presents. You may use y=kx or w=rt (4 points 2 for each)

Answers

Answer 1
Answer: jack = 3 presents every 15 minutes
luke = 4 presents every 20 minutes
target = 20 presents wrapped per person

y = kx ; where k is the constant rate, x is the number of presents wrapped, y is the total number of minutes spent wrapping x number of presents.

we need to compute for the unit rate of each individual.

Jack: 15 minutes / 3 presents = 5 minutes per present
Luke: 20 minutes / 5 presents = 4 minutes per present

Jack:
y = 5 minutes per present * 20 presents = 100 minutes

Luke:
y = 4 minutes per present * 20 presents = 80 minutes


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Which expression represents the polynomial −2x2−4x4+8x+x5−2x3 rewritten in descending order? A-  −2x2−4x4+8x+x5−2x3 B- −4x4−2x2+8x+x5−2x3 C- −4x4−2x3−2x2+8x+x5 D- x5−4x4−2x3−2x2+8x E- 8x+x5−2x2−2x3−4x4

ANSWER 30 please BOTH PARTS I NEED HELP! THANK YOU SO MUCH! BEST ANSWER GETS BRAINLIEST!

Answers

Let the variable s represent the amount Trey saved before mowing lawns.

Trey earns s dollars. Then he earns an additional $40. So far, he earns (s+40).
Then this amount is doubled: 2(s+40)
At the end, he has $234. So the equation is
2(s+40) = 234
2s + 80 = 234
2s = 154
s = 77

An arithmetic approach (solving using addition) could have the equation as
(s+40) + (s+40) = 234
s + 40 + s + 40 = 234
2s = 154
s = 77

Which is greater -4 4/25 or 4.12?

Answers

the answer would be 4.12 because the other one is a negative
4.12 because it is a positive number. If both are negative then it would be the first one. 

Difference between 645 and 738

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when someone asks about the difference between two numbers, they are asking you to subtract one number from the other.  This sentence can also be written as:

  738 - 645 = ?

The answer therefore is 93
Hi,

I'm not sure if you want to find the DIFFERENCE between 645 & 738 or 738 & 645. So Below I have done both of them below:- 

645 - 738 = -93

If someone gave you 645 candies, and then someone else said you better give me 738 candies. So, in the end you would have -93 candies left. 

738 - 645 = 93

If someone gave you 738 candies, and then someone else said you better give me 645 candies. So, in the end you would have 93 candies left. 

Hope I helped:P

PLEASE HELP ME!! WILL GIVE MUCH POINTS!!

Answers

A is the answer as (-4,8), (2,6), and many others are also possible solutions.
The correct answer is A, i think because y = 12 and x= 4, 4×3=12, and you can switch any numbers like y = 24 and x = 8, it fits the equation.

If sin ⁡x=−4/5, and π

Answers

Answer:

Step-by-step explanation:

sin ⁡x=−4/5

x=sin^-1(4/5)

x=about 53.1

x=(-4/5)/sin(53.1 degrees)=about -2.64662408617

what do you need for pi?

Identify the percent of change as an increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent if necessary: 68 miles to 42.5 miles

Answers

42.5/68
=0.625x100
=62.5%