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ella [17]
3 years ago
14

5. ERROR ANALYSIS Describe and correct the error in finding the sum of the number

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

Answer:

  (25 × 10") + 153 × 10" = (25 +153) × 10" = 178 × 10" = 1780"

Step-by-step explanation:

a) Numbers are miscopied: the numbers in parentheses should be (25 +153). Of course, the sum of these should be 178, not 78.

b) The common factor 10" is somehow expanded to 110' x 10°. It should be 10".

The sum should be ...

  (25 × 10") + 153 × 10" = (25 +153) × 10"

  = 178 × 10" = 1780" . . . . . correct sum

_____

Maybe the middle step is an attempt to convert to feet.

  1780" × (1')/(12") = (148 1/3)' = 148' 4"

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I need so much help!!!!
USPshnik [31]

<em>Answer:</em>

94.25m

<em>Explanation:</em>

\frac{3cm}{4.5m} × \frac{19.5}{x}

Solve for x.

(cross multiply & divide)

4.5 × 19.5 = 282.75

282.75 ÷ 3 = 94.25

4 0
3 years ago
Your skateboard ramp is 2 3/8 feet high. Your friend's skateboard is 2 2/5 feet high. which skateboard is higher?
Zinaida [17]

Answer:

2-3/8  =  2.375

2-2/5  =  2.4

2.4 - 2.375  =  0.025

Your friend's skateboard ramp is 0.025 foot higher

than your skateboard ramp is.

That's about  1.1%  higher . . . 0.3 inch, or about  7.62 milometers.

6 0
3 years ago
I dont know how to do this.​
iris [78.8K]

Answer:

C

Step-by-step explanation:

A function passes the vertical line test. This graph passes it so it is a function.

A one to one function has a single output for each input. This has multiple outputs for some inputs. Therefore, it is not one to one.

7 0
3 years ago
Kathryn is getting ready for Halloween and is headed to the store to pick up a costume. At the Halloween store,
Vanyuwa [196]

Answer: 30:65

Step-by-step explanation:

7 0
3 years ago
Lena has an envelope that is 3 inches tall. The envelope is 3 9/10 times as long as it is tall. How long is her envelope?
Kaylis [27]

Answer:

11.7 Inches

Step-by-step explanation:

9/10 is 0.9, so 3+0.9= 3.9

3.9 x 3 is 11.7 inches, or you can round it to 12 inches or a foot.

8 0
3 years ago
Read 2 more answers
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