Answer: -4
Step-by-step explanation:
3x + 4 = -8
3x= -12
x = -4
<!> Brainliest is appreciated! <!>
Answer:
a). 
m
b). 
m³
c). 
N²
Step-by-step explanation:
In this question we have to convert each option into SI units.
a). 
mm
= 
m
= m
b). (348 mm)³
= 
m³
= 
m³
= m³
c). 
N²
= 
N²
= 
= N²
Answer:
7 students.
Step-by-step explanation:
10% of 70 is 7.
Answer:
1 1/4
Step-by-step explanation:
3 1/8 - 1 7/8
I like to line them up vertically
3 1/8
- 1 7/8
---------------
We need to borrow from the 3
Take 1 from the 3 and make it 8/8
2 (1/8+8/8)
- 1 (7/8)
---------------------
2 (9/8)
- 1 (7/8)
---------------------
1 2/8
Simplify the fraction by dividing by 2 on the top and bottom
1 1/4
From the trigonometry:
tan θ = (sin θ) / (cos θ)
cot θ = (cos θ) / (sin θ)
∴ tan θ + cot θ = (sin θ) / (cos θ) + (cos θ) / (sin θ)
= [ sin² θ + cos² θ]/( sin θ cos θ) = 1 /( sin θ cos θ )
note : sin² θ + cos² θ = 1
