Which number sentence shows the correct placement of the decimal point in the product, based on the two factors?

Mathematics

2 answers:

lina2011 [118]3 years ago

4 0

Answer:

Step-by-step explanation:

25.07 x 5.4 = 135.378

So D is the correct answer

Lana71 [14]3 years ago

3 0

2.52 * 27.94 = 70.4088, so not that one

94.1 * 2.5 = 235.25, so not that one

1.83 * 2.9 = 5.307, so not that one

25.07 * 5.4 = 135.378, so that one

Answer:

D. 25.07 * 5.4 = 135.378

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A washer and a dryer cost $847 combined. The washer costs $53 less than the dryer. What is the cost of the dryer?

Natalija [7]

--------------------------------------------------------------
Define x :
--------------------------------------------------------------
Let the dryer be x.
Dryer = x
Washer = x -53

--------------------------------------------------------------
Construct Equation :
--------------------------------------------------------------
The washer and the dryer cost $847
⇒ x + x - 53 = 847

--------------------------------------------------------------
Solve x :
--------------------------------------------------------------
x + x - 53 = 847
2x - 53 = 847
2x = 847 + 53
2x = 900
x = 450

--------------------------------------------------------------
Find cost of dryer and washer :
--------------------------------------------------------------
Dryer = x = $450
Washer = x = 450 - 53 = 397

--------------------------------------------------------------
Answer: Dryer = $450
--------------------------------------------------------------

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Here is you're answer:

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