All categories

3 years ago

Which of the following intervals represents the set (1,4) u [2,6]?

Mathematics

2 answers:

fenix001 [56]3 years ago

8 0

Set is a sum of two intervals :(1,4) u [2,6]
In the first interval it is open on both sides so 1 and 4 don't belong to this interval, the second is closed so both 2 and 6 belong to interval and numbers between 2 and 6
We can write it as 1<x $\leq 6$
summing both sets we have one set: (1,6]
so
a) represent our set
b) also represent because all numbers between 4-6 and 6 are in our set
c)also represent, all numbers are in main set
d)also represent

garri49 [273]3 years ago

4 0

$(1;\ 4)\ \cup\ [2;\ 6]=(1;\ 6]\\\\Answer:A.$

You might be interested in

i have 30 coins, all nickels, dimes and quarters, worth $4.60. there are two more dimes than quarters.. how many of each kind of

Oliga [24]

Answer:

Step-by-step explanation:

I have 30 coins, all nickels, dimes, and quarters, worth $4.60. There are two more dimes than quarters. How many of each kind of coin do I have.

let quarters be x

dimes = x+2

...

dimes + quarters = x+x+2=2x+2

...

nickels = 30-(2x+2)

...

5(30-(2x+2))+10(x+2)+25x=460

5(30-2x-2)+10x+20+25x=460

150-10x-10+10x+20+25x=460

160+25x=460

-160

25x=460-160

25x=300

/25

x=300/25

x=12 ---- quarters

x+2= 12+2=14 dimes

30-(2x+2)=4 nickels

...

check

4*5+14*10+12*25=20+140+300=460

4 0

2 years ago

Mrs Johnson is going to the mall. When she left home her odometer was 54,362. 15 minutes later the odometer read 54,362 miles. W

andrew-mc [135]

Since both of the times she checked her odometer the result was 54,362 the answer would be 54,362/15

8 0

3 years ago

a farm, in the shape of an isosceles trapezoid, is putting up fences on its diagonals. If 1 fence has sixteen 9 - foot segments,

iragen [17]

Answer:

Step-by-step explanation:

16 × 9 = 8 × x

x = 18

3 0

3 years ago

Let f(x)=8/(1+3e)^(-0.7x)

Troyanec [42]

For x = -3, <span>(-0.7x) equals (-0.7[-3]), or 2.1.

8 8 8
Then f(-3) = ------------------- = ---------------- = ------------ = 0.31 (approx)
1 + 3*e^2.1 1 + 24.499 25.5</span>

5 0

3 years ago

u(x) = x5 – x4 + x2 and v(x) = –x2, which expression is equivalent to (StartFraction u Over v EndFraction) (x)?

EastWind [94]

Answer:

Step-by-step explanation:

Bello,

$\dfrac{u(x)}{v(x)}=\dfrac{x^5-x^4+x^2}{-x^2}=-x^3+x^2+1$

thanks

5 0

3 years ago

Read 2 more answers