MATHEMATICS MIDDLE SCHOOL

A rectangle with dimensions of 3 units by 5 units is enlarged by a scale factor of 1.4 By what percent does its area increase?

Answers

Answer 1
Answer: A_1=3*5=15\n 3.5*1.4=4.9\n 5*1.4=7\n A_2=4.9*7=34.3\n (34.3)/(15)*100\%=228.(6)\%\n 228.(6)\%-100\%=128.(6)\%
Answer 2
Answer:

Answer:

128.(6)%

i think this is the ans

Related Questions

A glacier moves about 12 inches every 36 hours about how far does the glacier move in one week
Please help me out please
What is the answer to 4x-2=3x+6
Chad buys peanuts in 2 pounds bags. He repackages them into bags that hold 5/6 pound of peanuts. How many 2 pound bags of peanuts should Chad buy so that he can fill the 5/6 pound bags without having any peanuts left over?
Identify the input and the output given the relation described: Mr. Edward wants to find the cost of parking his car at a shopping center for a few hours. ___________

3. Speed = 81 mph; Time = 3 hours; Distance= _________?

Answers

Answer:

243

Step-by-step explanation:

speed = distance/time

81 = x/3

81 * 3

= 243

Answer:

243 miles

Step-by-step explanation:

To find the distance you would multiply the time by the speed.

81 times 3 is 243

Simplify, picture attached

Answers

Answer:

01/6

wd

Step-by-step explanation:

Ben has a cell phone plan that provides 200 free minutes each month for aflat rate of $39. For any minutes over 200, Ben is charged $0.35 per minute.
Which of the following piecewise functions accurately represents charges
based on Ben's cell phone plan?
A. f (x) =
39, x> 200
39+. 35, x < 200
B. f (x) =
39, x 200
35(x-200), x > 200
C. f(x) =
39,
x200
35x, x > 200
D. f (x) =
39.x200
39+. 35(x-200), x > 2001

Answers

Answer:

The piecewise functions accurately represents charges  based on Ben's cell phone plan is :

f(x)= 39, x \leq 200\nf(x)=39 + 0.35(x - 200), x > 200}

Step-by-step explanation:

Let x be the minutes over cell phone

Let f(x) represents the piecewise function that represents the charges based on Ben's cell phone plan.

We are given that Ben has a cell phone plan that provides 200 free minutes each month for a  flat rate of $39.

So,f(x)= 39, x \leq 200

We are also given that  For any minutes over 200, Ben is charged $0.35 per minute.

So, Minutes over 200 = x-200

f(x)=39 + 0.35(x - 200), x > 200}

Hence the piecewise functions accurately represents charges  based on Ben's cell phone plan is :

f(x)= 39, x \leq 200\nf(x)=39 + 0.35(x - 200), x > 200}

A store is having a sale on where movies are 15% of their original price. A movie is on sale for $22.10. What is the original price of the movie?

Answers

Answer:

$147.33

Step-by-step explanation:

In order to solve this problem we just have to do a quick reasoning, the problem states that the movies are being sold for the 15% of their original price, so 22.10 represents the 15% of the original price, with this we can just do a rule of thirds to be able to calculate how much is the 100%.

(15)/(100)= (22.1)/(x)

Now if we just clear the x we can solve the equation for X.

x=((22.10)(100))/(15)

x=(2210)/(15) \nx=147.33

So the original price would be 147.33
ok so first off understand what they are saying. there is a movie on sale for $22.10 which is 15 percent of the original price. So now what you do is set up the problem.

22.10 is = 15% of the price

x = 100% of the price (original price)

 15   = 22.10
100        x

now just use cross multiplication.

15x = 22.10 · 100

solve for x.

15x = 2210
15       15

x = 147.33333333 since the 3's go on forever you can simply put it into a fraction 

x = 147  3
              9

whenever there is a repeating number you can put it into a fraction but putting the repeating number over a 9

PLEASE HELP NEED ANSWER BADLY

Answers

You do 1/3(area of the base)(height) so it’s (1/3)(32^2)(39). 13,311.999999 cubic yards is the answer.

The height of a rocket a given number of seconds after it is released is modeled by h(t)=16t^2+32t+10. What does t represent

Answers

Answer:

t represents time

Step-by-step explanation:

h(t) represents the height of the rocket after t seconds where t is time
Other Questions
Lena can run 4 miles in 30 minutes. Rachel can run 7 milesin 56 minutes. What proportion could you write to see if they arerunning at the same rate?​
Plz help with this question ASAP which choice is it and steps to get the answer or explain why
Erik took a trip to see his friend Mike who lives 308 miles away. He left his place at 10 AM driving at 70 mph. In 2 hours, his friend Mike left his place driving towards Erik at an average speed of 50 mph. At what time will they meet?
3/10 in.=7/8 mi. (i am doing rates and ratios)