2 answers:
Answer:
Problem 1:
gives x=-11
Problem 2:
gives x=33/5
Step-by-step explanation:
I will do it both ways:
Problem 1:

I don't like the fraction so I'm going to clear by multiplying both sides by 5:

Distribute:

Subtract 2x on both sides:

Subtract 30 on both sides:

Divide both sides by 3:

Problem 2:

Clear the fraction by multiplying both sides by 5:

Distribute:

Subtract 5x on both sides:

Add 3 on both sides:

Divide both sides by 5:

For this case we must solve the following equation:

Multiplying by 5 on both sides we have:

We add 3 to both sides of the equation:

Subtracting 5x on both sides:

Dividing between -3 on both sides:

Answer:
-11
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Step-by-step explanation:
45+90+x=180
135+x=180
x=180-135
x=45
Answer:
Step-by-step explanation:
<u>80 g rock displaces water:</u>
- 75 ml - 30 ml = 45 ml = 45 cm³
<u>Density = mass / volume:</u>
- d = 80 g / 45 cm³
- d = 1.78 g/cm³ (rounded)
Use Socratic it gives u a step by step explanation
Answer:
it must be number 1
I am sure about parallel side and 4 right angles
P(5 on one throw) = 1/8
expected number of 5's in 400 throws = 1/8 * 400 = 50