1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Andru [333]
2 years ago
10

Use a special product pattern to evaluate

t="19^2-11^2" align="absmiddle" class="latex-formula">
I'm pretty sure I just normally solve it but I have no darn clue
Mathematics
1 answer:
Delvig [45]2 years ago
3 0

Answer:

240

Step-by-step explanation:

To evaluate 19^2 - 11^2, we have to use a special product pattern. Since this expression is in the form a^2 - b^2, we use the pattern (a + b)(a - b).

  • (19+11)(19-11)
  • (30)(8)
  • 240

Therefore, the answer is 240.

Have a lovely rest of your day/night, and good luck with your assignments! ♡

You might be interested in
Complete the statement with &lt;, &gt;, or=.<br><br> PLEASEE HELP
Allushta [10]

Answer:

< LK

Step-by-step explanation:

The higher the angle, the bigger the opposite side, so since 123 is bigger than 114, LK is bigger than MN

6 0
3 years ago
PLEASE HELP/ANSWER! From 1980 to 1990, Lior’s weight increased by 25%. If his weight was k kilograms in 1990, what was it in 198
Elena-2011 [213]

The weight in 1980 is \frac{4k}{5} kilograms

<em><u>Solution:</u></em>

From 1980 to 1990, Lior’s weight increased by 25%

His weight is "k" kilograms in 1990

<em><u>To find: weight in 1980</u></em>

This is a percentage increase problem

Let "x" be the weight in kilograms in 1980

<em><u>The percentage increase is given by formula:</u></em>

\text{Percentage increase } = \frac{\text{Final value - initial value}}{\text{initial value}} \times 100

Here,

Initial value in 1980 = x

Final value in 1990 = k

Percentage increase = 25 %

<em><u>Substituting the values in formula,</u></em>

25 = \frac{k-x}{x} \times 100\\\\25x = 100(k-x)\\\\x = 4(k-x)\\\\x = 4k - 4x\\\\5x = 4k\\\\x = \frac{4k}{5}

Thus the weight in kilograms in 1980 is \frac{4k}{5}

7 0
3 years ago
Estimate the difference.<br><br> 6.11 - 1.2<br><br> 6<br> 7<br> 5<br> 4
fenix001 [56]

Answer:

5

Step-by-step explanation:

8 0
2 years ago
There were 96 iPads at Fun Elementary. A company donated some iPads and the school purchased 300 more iPads. Now there are 865 i
Zanzabum

Answer:

469 iPads were donated.

Step-by-step explanation:

The school purchased 396 iPads in total: 300+96

Now, you subtract how many the school purchased from the total amount of iPads to see how many iPads were donated: 865-396 = 469

5 0
2 years ago
How much simple interest is earned on an investment of 1,250 if the money is invested for 5 years at an annual interest rate of
Alekssandra [29.7K]
<h3>Answer:  $281.25</h3>

Work Shown:

i = P*r*t

i = 1250*0.045*5

i = 281.25

8 0
2 years ago
Other questions:
  • I am unsure how to this problem. Please help explain it to me.:
    8·1 answer
  • Find x A. 46–√ B. 32 C. 43–√ D. 6–√
    9·1 answer
  • Which relation is a functiona) {(2.4), (2,-7) (2,11), (2,-15)}
    7·1 answer
  • a cylindrical paint roller has a length of 10 inches and a diameter of 1 1/2 inches. As the roller is dragged along a wall, if i
    7·1 answer
  • What is the product of 9 and -7?
    14·1 answer
  • Circle the digit in the ones place. Then write even or odd. 36 is?
    5·2 answers
  • How do you solve u/6 &gt; (with an underline underlining it) 3<br> plz help<br> its due tomorrow
    6·1 answer
  • Please help with this as soon as possible​
    9·2 answers
  • Determine the solution for x^2-3x-28=\&gt; 0
    12·1 answer
  • 25y + 150x = 250<br><br> find the Variables
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!