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ladessa [460]
3 years ago
14

Why the output is a zero number ?

D%200" id="TexFormula1" title="(x - 3) \times (x + 4) = 0" alt="(x - 3) \times (x + 4) = 0" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
ELEN [110]3 years ago
4 0

Answer:

see explanation

Step-by-step explanation:

Given

(x - 3) × (x + 4) = 0, that is

(x - 3)(x + 4) = 0

The zero product indicates that (x - 3) = 0 or (x + 4) = 0

x - 3 = 0 ⇒ x = 3

x + 4 = 0 ⇒ x = - 4

Thus if x = 3, then

(3 - 3)(x + 4) = 0 × (x + 4) = 0

Similarly if x = - 4 the output is zero

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when rounded to the nearest hundred the number of pupils in a school is 1800 what are the smallest and largest numbers of pupils
barxatty [35]
1749 should be rounded to 1700 because 1749 is closer to 1700 than to 1800

1750 should be rounded to 1800 because it is equally close to 1700 and 1800, and so you apply the rule than when the number to round finish in 5 you round to the next upper number.

Now, if you apply the same 1849 should be tha greater number that when rounded to hundreds becomes 1800.

So, the smalles and largest numbers of pupils there could be in the school are 1849 and 1750, respectively.
5 0
4 years ago
These tables represent a quadratic function with a vertex at (0,3). What is the average rate of change for the interval from X =
Eva8 [605]

Answer:

-19

Step-by-step explanation:

The missing table is shown in the attachment.

Since the quadratic function has vertex at (0,3), its equation is of the form;

y = a {x}^{2}  + 3

To find the value of 'a' we substitute any other point from the table say (1,2) to get:

2 = a( {1)}^{2}  + 3

a = 2 - 3 =  - 1

Hence the function is

y =  -  {x}^{2} +  3

Now

f(10) =  - 100 + 3 =  - 97

f(9) =  - 81 + 3 =  - 78

The average rate of change from x=9 to x=10 is

\frac{f(10) - f(9)}{10 - 9}  =  \frac{ - 97 -  - 78}{1}  =   - 19

7 0
4 years ago
In order to avoid staying after work, a quality control analyst inspects the first 100 items produced that day. Which sampling m
mr_godi [17]
Based on the given scenario above wherein the quality control analyst just inspects the first 100 items produced that day in order to avoid staying after work, the sampling method that she used is the CONVENIENCE SAMPLING METHOD. Hope this helps.
3 0
3 years ago
Read 2 more answers
What is 3 3/10 + 2 4/5 + 3 2/5 + 2 1/10
marysya [2.9K]
(33/10)+(14/5)+(17/5)+(21/10) (after taking L.C.M. of denominators) =(33+28+34+21)/10 =116/10(simplfy it) =58/5
4 0
4 years ago
A scuba diver descends farther down into the ocean from an initial depth of 14.7 feet below sea level. The scuba diver descends
uranmaximum [27]

The maximum rate, r, that the scuba diver may descend is r≤ 11.2

Given the following parameters:

  • Initial length = 14.7feet
  • Time = 4.5 minutes
  • Rate  = distance/time

If the scuba diver reaches a depth no more than 65.1 feet below sea level, then;

r ≤ (65.1 - 14.7)/4.5

r≤ 50.4/4.5

r≤ 11.2

Hence the maximum rate, r, that the scuba diver may descend is r≤ 11.2

Learn more on rate here: brainly.com/question/11408596

8 0
3 years ago
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