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Korolek [52]
3 years ago
12

Please answer quickly, thank you for your help

Mathematics
2 answers:
Volgvan3 years ago
8 0

Answer:

C: x > -6 or x < –9

Step-by-step explanation:

x + 9 < 0 or 2x > –12

For x + 9 < 0:

Isolate x by subtracting 9 from both sides of the inequality:

x + 9 – 9 < 0 – 9

x + 0 < – 9

x < – 9

For 2x > – 12:

Isolate x by dividing both sides of the inequality by 2:

\frac{2x}{2} > \frac{-12}{2}

x > – 6

Therefore, the solution is:

x < – 9 or x > – 6

Interval notation: [(– ∞, –9) ∪ (–6, ∞)]

The answer is C: x > -6 or x < –9

RoseWind [281]3 years ago
6 0

Answer:

-6<x<-9

Step-by-step explanation:

if x+9<0 and 2x>-12

x<-9

x>-6

X is smaller than -9 but greater than -6.

The solution is -6<x<-9

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The local newspaper has letters to the editor from 30 people. If this nunber represents 5% of all of the
Eduardwww [97]

Answer:

600 readers

Step-by-step explanation:

just do 100/5=20

and then 30x20=600 readers

7 0
4 years ago
1. What is the difference between heat capacity, specific heat, and latent heat? 2. Explain what is physically meant by "Degrees
alisha [4.7K]

Answer:

1.

- Heat capacity is defined as the total amount of heat required to increase the temperature of a substance in 1°C.

- Specific heat is defined as the total amount of heat required to increase the temperature of a substance in 1°C per unit mass. Hence this property depends of the mass of the substance.

- Latent heat is the amount of energy absorbed or released by a substance in a phase change (physical change) without a change in temperature.

2.

- Degrees of freedom is the number of parameters that define the configuration of a system. For example, in a system with we want to know about the dynamic in the three dimension x,y,z and also about the rotation around a fixed axe we have four degrees of freedom.

- Equipartition theorem relates the temperature of a system with the average energy of the system (this average is taken for those degrees of freedom that appears quadratically).

I hope this is useful for you

regards

8 0
3 years ago
Can y’all help me on question six?!
tankabanditka [31]

Answer:

The answer is C (2:1)

Step-by-step explanation:

1. The greatest common factor of 8 and 4, is 4. We need to divide both numbers by the GCM, 4.

8 / 4 = 2

4 / 4 = 1

Therefore, the answer is 2:1 (C)

3 0
3 years ago
Solve the following system of equations graphically y=2x-3 and y=x-1<br>​
Mila [183]

Answer:

Sooo... the

y-intercept =  -3

Slope = 2/1

Step-by-step explanation:

When you are going to find a point you are going to start at y = -3.Then from there you are going to go up two and right one until you have filled your graph

Hope this helps!

3 0
3 years ago
If you get a 70 on a test and you get 21 questions right how many questions are on teh test
Brrunno [24]
21     70
x       100

x=(21*100)/70=30
7 0
4 years ago
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