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nadezda [96]
4 years ago
8

How do you identify the information that is given to you that you dont need for solving a problem?

Mathematics
1 answer:
Alborosie4 years ago
8 0
When reading a question, you need to be aware of the numbers presented and the facts. You need to pay attention to the question - what, when, where, how, why or how much. What is being asked in the question is always your clue. Unnecessary information will be eliminated once you understand the question.

Simple example from a Business book:

Jessica Fernandez, manager of Subway, had a bank balance of $5382.12 on March 1. During March, she deposited $60,375.82 received from sales, $3280.18 received as credits from suppliers, and $75.53 as a county tax refund. She paid out $27,282.75 to suppliers, $4280.83 for rent and utilities, and $12,252.23 for salaries and miscellaneous. How much did Fernandez deposit in March?

Answer:
$60,375.82 (sales) + $3280.18 (credits) + $75.53 (refund) = $63,731.53
Fernandez deposit $63,731.53 in March.

The question immediately lead you to the sentence that is the key to the answer.
It is pretty obvious but try to recognize the important facts from the rest.
The question did not ask about Jessica's balance on March 1 or did not ask about how much she pay out. You can immediately eliminate that those information are not necessary to the problem being asked. The question is how much did she deposit in March. You need to find the sentence that points out the answer - During March, she deposited $60,375.82 received from sales, $3280.18 received as credits from suppliers, and $75.53 as a county tax refund. List all the numbers and add them together and you will come up with the figures she deposited. It is just a simple question but it presented the technique for the elimination process of unnecessary facts. It is not "we cannot see the answer" but the truth is we cannot see and understand the question.
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What is the average of 132 and 1/2 137 and 2/3
tino4ka555 [31]
If you would like to find the average of 132 1/2 and 137 2/3, you can calculate this using the following steps:

<span>132 1/2 = 265/2
137 2/3 = 413/3
</span>
132 1/2 + 137 2/3 = 265/2 + 413/3 = 795/6 + 826/6 = 1621/6
<span>1621/6 / 2 = 1621/12 = 135 1/12
</span>
The correct result would be <span>135 1/12.</span>
6 0
3 years ago
Work out the value of s
diamong [38]

Answer:

s=6

Step-by-step explanation:

s= 10(1/2)+ -2(1/2)^2

s= 5+ (-1)^2

s= 5+1

s=6

6 0
3 years ago
Read 2 more answers
What is the slope of the equation, y = -7 - 4/3x?
gulaghasi [49]
So the slope is represented by m in the equation y=mx+b. In this case, the equation is or the form y=b+mx. m=-4/3 so the slope is -4/3
6 0
3 years ago
A plane flies round-trip to Philadelphia. It flies to Philadelphia at 220 miles per hour and back home with a tailwind at 280 mi
VMariaS [17]
1430 miles in 6.5 hours because you multiply 220 by 6.5 and equals 1430miles
8 0
4 years ago
In cabbage butterflies, white wings (W) are dominant to yellow wings (w). A heterozygous butterfly mates with a butterfly that h
Fynjy0 [20]

Answer:

(a)

\begin{array}{ccc}{} & {W} & {w} & {w} & {Ww } & {ww } & {w} & { Ww} & {ww } \ \end{array}

(b)

White = 50\%

Yellow = 50\%

Step-by-step explanation:

See attachment for initial punnet square

Solving (a): Complete the square

Initially, we have:

\begin{array}{ccc}{} & {W} & {w} & {w} & { } & { } & {w} & { } & { } \ \end{array}

To complete the square, we simply write the letter at the column and the letter at the row in each cell;

So, we have:

\begin{array}{ccc}{} & {W} & {w} & {w} & {Ww } & {ww } & {w} & { Ww} & {ww } \ \end{array}

Solving (b): Percentage of each

From the question, we understand that W are dominant to w.

So:

Ww = White

ww = Yellow

From (a) above

Ww = 2

ww = 2

Total = 4

So, the percentage of each is:

White = \frac{Ww}{Total} * 100\%

White = \frac{2}{4} * 100\%

White = 0.5 * 100\%

White = 50\%

Yellow = 100\% - White --- Complement rule

Yellow = 100\% - 50\%

Yellow = 50\%

8 0
3 years ago
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