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alekssr [168]
3 years ago
8

Evaluate the following 9+(-3)

Mathematics
2 answers:
Illusion [34]3 years ago
8 0
9+(-3)=
9+-3=
9-3=
6
Answer is 6

Karo-lina-s [1.5K]3 years ago
5 0
9+-3 means 9 plus 3 less
basically it is 9-3=6
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Average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.
11111nata11111 [884]
The average rate of change is the slope of the secant line connecting the points on f(x) from x=-5 to x=10.

In other words, it is just the slope of the straight line connecting the points
(-5,f(-5)) \: and \: (10,f(10))

So we were given ,

f(x) = {x}^{2} - 3x - 10

At
x = - 5
f( - 5) = {( -5 )}^{2} - 3( - 5) - 10
f( - 5) = 25 + 15- 10
f( - 5) = 30

Also at
x = 10
f( 10) = {( 10)}^{2} - 3( 10) - 10.
f( 10) = 100- 30 - 10
f( 10) = 60

The average rate of change
= \frac{f(10) - f( - 5)}{10 - - 5}
= \frac{60- 30}{15}
= \frac{30}{15}
= 2
3 0
3 years ago
Put brackets in the calculation below to make it correct.<br><br> 15 - 4 x 2 + 1 = 3
bagirrra123 [75]
If you put brackets around (2+1), your method of working is: 
1) 15-4*(2+1)=3 
2) 15-4*3=3
3) 15-12=3
You don't need any more brackets, as the BIDMAS (brackets, Indices, division, multiplication, addition, subtraction) rule does the rest of the job for you. 
The answer is therefore: 15-4*(2+1)=3
3 0
3 years ago
PLZ HELP HURRY PLZ Below are the data collected from two random samples of 100 members of a large travel club regarding the type
lara31 [8.8K]
<h3>Answer: Choice D) </h3>

More members prefer a beach vacation and ski vacation than an adventure vacation.

======================================================

Explanation:

Let's go through the four answer choices to see which one is true.

  • Choice A is false because most members prefer a cruise, as 70+72 = 142 is the largest column sum.
  • Choice B is false for the same reasoning as choice A.
  • Choice C is false. We have 6+1 = 7 people who prefer adventure and 19+21 = 40 who prefer to ski, giving 7+40 = 47 people who prefer either. But this is nowhere near 142 we found back in choice A above. So more people prefer a cruise than the combined amount for adventure and ski.
  • Choice D is true. Adding the column totals for "beach" and "ski" gives (5+6)+(19+21) = 11+40 = 51, and this exceeds the column total of "adventure (6+1 = 7).
4 0
3 years ago
A store normally sells certain dress for $160 during a special sale, the store reduces the price of the dress to $120 by what pe
Mazyrski [523]

Answer:

25%

Step-by-step explanation:

Step one:

A store normally sells certain dress for $160 during a special sale

the store reduces the price of the dress to $120

Step two:

Percent reduction= change in price/initial price *100

Percent reduction= 160-120/160 *100

Percent reduction= 40/160*100

Percent reduction==0.25*100

Percent reduction=25%

7 0
3 years ago
F(x) =x^6-3x+9<br> g(x)=3x^3+2x^2-4x-9<br> Find (f-g)(x)
enyata [817]

Step-by-step explanation:

(f-g)(x)=

x ^{2}  - 3x + 9 - (3 {x}^{3}  + 2 {x}^{2}   - 4x - 9) =  \\ x ^{2}  - 3x + 9 - 3 {x}^{3}  - 2 {x}^{2}  + 4x  + 9 = \\  - 3 {x}^{3}  - x ^{2}  + x + 18

7 0
3 years ago
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