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enyata [817]
4 years ago
7

Which number line represents the solution set for the inequality –1/2x ≥ 4?

Mathematics
1 answer:
satela [25.4K]4 years ago
8 0
The third dot is my answer. But don't take it for granted. Try it yourself and see what you come out with!
You might be interested in
10n -11 =3 + 4n + 6n​
MrRissso [65]

Answer:

10n -11 =3 + 4n + 6n​

10n - 10n -11 =3-3 + 4n + 6n​

-11 - 3 = -10n + 4n + 6n

-14= -10n + 10n

-14 = n

Step-by-step explanation:

10n -11 =3 + 4n + 6n​

10n - 10n -11 =3-3 + 4n + 6n​

-11 - 3 = -10n + 4n + 6n

-14= -10n + 10n

-14 = n

3 0
3 years ago
Which of the following weights would you expect to be suitable for weighing on an ordinary bathroom scale?
Ierofanga [76]

Answer:

c) 4.10^{6} cg=40Kg

Step-by-step explanation:

To find the answer we have to put all the options in the same unit, so we are going to use Kg.

  • a) 2500 μg

μ=1.10^{-6}

Replacing the value of μ:

2500.1.10^{-6} g=\\ 2500.10^{-6} g

<u><em>Observation:</em></u> 1 g = 0.001 Kg, 1 g=1.10^{-3} Kg

2500.10^{-6} g=\\ =2500.10^{-6}.10^{-3}Kg\\=2500.10^{-9}Kg

2500.10^{-9}Kg=0.000002500 Kg

This number is very small so it's no suitable for weighing on an ordinary bathroom scale.

  • b) 5.10^{-4}Kg

This value is already in kilograms,

5.10^{-4} kg=0,0005 Kg

But it's small. It's not suitable for weighing on an ordinary bathroom scale.

  • c) 4.10^{6} cg

Centigrams: cg=1.10^{-5} Kg

Then,

4.10^{6} cg=4.10^{6}.10^{-5}Kg\\ =4.10^{1} Kg\\ =40 Kg

This value it's suitable for weighing on an bathroom scale.

  • d) 5,5.10^{8} dg

Decigrams: dg=1.10^{-4} Kg

Then,

5,5.10^{8} dg=5,5.10^{8}.10^{-4}Kg\\ =5,5.10^{4} Kg\\ =55000 Kg

This value is too big for a bathroom scale. Usually the limit for an ordinary bathroom scale is between 140-150 Kgs.

  • e) 2,0.10^{7} mg

Miligrams: mg=1.10^{-6} Kg

Then,

2,0.10^{7} mg=2,0.10^{7}.10^{-6}Kg\\ =2,0.10^{1} Kg\\ =20 Kg

This could be a right answer too but it all depends on the scale. There are some scales whose  minimum weight is 30Kg. So the right answer is c)

5 0
4 years ago
What is 10 +20-9+2+8-3 <br><br> first to answer will get brainlyest
True [87]
28!!!!!!!!!!!!!!!!!!!!
3 0
3 years ago
4 cups equals how many ounces
DanielleElmas [232]
4 cups equals 33.307 oz

5 0
3 years ago
Read 2 more answers
Tan 235° = 2tan20°+ tan215°​
Mariulka [41]

Given :  tan 235 = 2 tan 20 + tan 215

To Find : prove that

Solution:

tan 235 = 2 tan 20 + tan 215

Tan x = Tan (180 + x)

tan 235 = tan ( 180 + 55) = tan55

tan 215 = tan (180 + 35) = tan 35

=> tan 55 = 2tan 20 + tan 35

55 = 20 + 35

=> 20  = 55 - 35

taking Tan both sides

=> Tan 20 = Tan ( 55 - 35)

=> Tan 20  = (Tan55 - Tan35) /(1 + Tan55 . Tan35)

Tan35 = Cot55 = 1/tan55 => Tan55 . Tan35 =1

=> Tan 20  = (Tan 55 - Tan 35) /(1 + 1)

=> Tan 20  = (Tan 55 - Tan 35) /2

=> 2 Tan 20  = Tan 55 - Tan 35

=> 2 Tan 20 +  Tan 35 = Tan 55

=>  tan 55 = 2tan 20 + tan 35

=>  tan 235 = 2tan 20 + tan 215

QED

Hence Proved

5 0
3 years ago
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