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creativ13 [48]
3 years ago
11

Question 3

Mathematics
1 answer:
Elza [17]3 years ago
8 0

Answer:

Perimeter is 126cm and area is 972cm^2

Step-by-step explanation:

Scale factor means you multiply the dimensions by the factor. In this case 4.5

The width 6cm becomes 27cm. The length 8cm becomes 36cm.

Perimeter = 2*L + 2*W, L is length and W is width.

P=27*2cm+36*2cm\\P=54cm+72cm\\P=126cm

Area = L*W

A=27cm*36cm\\A=972cm^2

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An ongoing promotion at a department store gives customers 20% off the portion of their bill that is over $100. Ruby's total bil
BigorU [14]

Answer:

The correct option is:

100 + 0.8(x - 100) = 250

Step-by-step explanation:

We are given that:

We know that a department store gives 20 % off the portion of the bill that is over 100 dollars.

Total bill is 250 and x is the amount of money she would have spent without the promotion.

The cost to which the discount applies is 0.8 ( x - 100 ).

<em>Finally the equation we get is 100 + 0.8 (x - 100) = 250.</em>

3 0
4 years ago
Show how to solve this
alekssr [168]

Answer:

86093440 /129140163

Step-by-step explanation:

Explanation in the Images. I can clarify further if needed.

6 0
3 years ago
824 =20+?+4 how do you work this out
Y_Kistochka [10]
The answer is 800
20+4=24 
824-24=800
800+20+4=824
7 0
4 years ago
Read 2 more answers
Write 9/12 as a sum of unit fractions ​
Svetlanka [38]

9/12=1/2+1/4 hope this helps

5 0
4 years ago
What would be the answer to this ?
djyliett [7]

(m^4 + m^3 + 4) + (-5m^4 + 4m + 1) =

m^4 + (-5m^4) + m^3 + 4m + 4 + 1 =

-4m^4 + m^3 + 4m + 5

The answer is B

3 0
3 years ago
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