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3 years ago

Conjecture: The product of a number (x - 1) and the number (x + 1) is always equal to ENTER ANSWER HERE

Mathematics

1 answer:

Sergeeva-Olga [200]3 years ago

6 0

Answer:

x² - 1

Step-by-step explanation:

The product

(x - 1)(x + 1)

= x(x + 1) - 1(x + 1) ← distribute both parenthesis

= x² + x - x - 1 ← collect like terms

= x² - 1

You might be interested in

62 is 90.5% of what number

kati45 [8]

$\frac{90,5*x}{100} =62 =\ \textgreater \ x= \frac{100*62}{90,5} =\frac{1000*62 }{905}= \frac{200*62}{181} = \frac{12400}{181}$
Hope that helps.Have a nice day!! ^^

6 0

3 years ago

Read 2 more answers

There is a few questions but im stuck on this one. please help

maw [93]

Answer:

Calculating percentages are important as they apply to real life activities. For example, shopping. If you are on a budget and you want to know how much your total is with tax, you can convert the decimal for the tax, turn it into a percent and add it to your total. Another example is eating at a restaurant. A good tip is 15-20% so you can calculate this and add it to your price.

Step-by-step explanation:

3 0

3 years ago

The base of a parallelogram with area 154.5 cm² and height 15 cm is

Iteru [2.4K]

Answer:

▶ (c) 10.3 cm

Step-by-step explanation:

$\space$

A = b × h

=> 154.5 = b × 15

=> b = $\sf{\frac{154.5}{15} }$

=> 10.3 cm

$\space$

Hope it helps!

Have a great day! :)

8 0

3 years ago

Scenario 2 You are at a restaurant with three friends (party of 4) and need to estimate the amount of tip for your portion of th

Oxana [17]

The best approach to calculating the stipulated 20% tip by means of fractions is to note that the tip is one-fifth of the total amount charged on the bill.

<h3>What is the equivalent of the 20% tip as indicated in the task content?</h3>

The percentage represented as; 20% can be expressed as a fraction.

This follows from the fact that the percentage, % symbol translates to divided by 100.

Consequently, we must note that the 20% translates to; 20/100 = 1/5.

Hence, the 20% tip is one-fifth of the total amount.