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Charra [1.4K]
4 years ago
5

Rectangle ABCD was dilated to create rectangle A'B'C'D' using point R as the center of dilation.

Mathematics
2 answers:
Slav-nsk [51]4 years ago
8 0

Answer:

5

Step-by-step explanation:


kati45 [8]4 years ago
3 0

Answer:

The value of RD' is 5 units.

Step-by-step explanation:

It is given that rectangle ABCD was dilated to create rectangle A'B'C'D' using point R as the center of dilation.

The scale factor is the proportion of side length of image and side length of preimage.

k=\frac{\text{lenght of image}}{\text{lenght of preimage}}

k=\frac{B'C'}{BC}

k=\frac{4}{12}

k=\frac{1}{3}

Scale factor is also defined as

k=\frac{RD'}{RD}

\frac{1}{3}=\frac{RD'}{15}

Multiply both sides by 15.

RD'=5

Therefore the value of RD' is 5 units.

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Beccas dad told her that she needs to practice piano for two hours this week so far she has practiced 20 minutes on Monday a hal
vodomira [7]

Answer:

Step-by-step explanation:

She needs to practice piano for 2 hours this week:

Lets add the time she played the piano so far:

Monday + Tuesday + Wednesday

Which is

20 + 30 (half an hour) + 15

= 65 minutes

In which 2 hours is equal to 120 minutes

So,

120 - 65 = 55

She needs to practice for 55 more minutes in this week

8 0
3 years ago
Leticia can run 2 miles in 11 minutes. How long would it take her to run 8
liq [111]

Answer:

44 minutes

Step-by-step explanation:

8/2 is 4, multiply 11 by 4, 44 is your answer

5 0
3 years ago
Read 2 more answers
PLEASE HELP!!!!!!! The equation r = 6t gives the number of albums released, r, by a record label over time in years, t. If you g
Pani-rosa [81]

Answer:

The answers are (8,48) and (13,78)

Step-by-step explanation:

t=x-axis or x

r=y-axis or y

52=6(9) → 52≠54 not correct

48=6(8)→48=48 correct

74=6(12)→74≠72 not correct

78=6(13)→78=78 correct

44=6(7)→44≠42 not correct


5 0
3 years ago
I need to know what mathematical operation applies to Problem: Tricia manages the front office at a local doctor's office and ne
Mrrafil [7]
                  <span>      <span /><span><span>Week 1        Week 2
</span> <span> Monday               480             480
</span><span>Tuesday              450             480
</span> <span> Wednesday        495             480
</span> <span> Thursday             480             480
</span> <span> Friday                   300             480
</span> <span> Total (minutes) 2205           2400

Week 1: 2205 mins / 60 mins = 36.75 hours
Week 2: 2400 mins / 60 mins = 40 hours

Add up all the minutes in a week. 
Divide the sum by 60 minutes to get the total hours worked for the week. 
Both weeks, the front office clerk did not exceed the 40 hours maximum. 
There will be no overtime pay. </span></span></span>
4 0
3 years ago
An online furniture store sells chairs for $150 each and tables for $400 each. Every day, the store can ship no more than 30 pie
ivolga24 [154]

Answer:

minimum of 13 chairs must be sold to reach a target of $6500

and a max of 20 chairs can be solved.

Step-by-step explanation:

Given that:

Price of chair = $150

Price of table = $400

Let the number of chairs be denoted by c and tables by t,

According to given condition:

t + c = 30 ----------- eq1

t(150) + c(400) = 6500 ------ eq2

Given that:

10 tables were sold so:

t = 10

Putting in eq1

c = 20 (max)

As the minimum target is $6500 so from eq2

10(150) + 400c = 6500

400c = 6500 - 1500

400c = 5000

c = 5000/400

c = 12.5

by rounding off

c = 13

So a minimum of 13 chairs must be sold to reach a target of $6500

i hope it will help you!

4 0
3 years ago
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