Hello!

Scientific notation is a number multiplied by 10 to the power of something

So the answers are the first one and the last one

Hope this helps!

8 0

3 years ago

Read 2 more answers

Prove that 1/sec0-tan0= sec0+tan0

Leviafan [203]

Answer:

Step-by-step explanation:

$\text{LHS}=\frac{1}{\sec \theta-\tan \theta}\\=\frac{\sec \theta+\tan \theta}{(\sec \theta-\tan \theta)(\sec \theta+\tan \theta)}\\=\frac{\sec \theta+\tan \theta}{\sec^{2} \theta-\tan^{2} \theta}\\=\frac{\sec \theta+\tan \theta}{1}\\=\sec \theta+\tan \theta\\=\text{RHS}$

7 0

2 years ago

3. Calculate the area of the shape below. * 6 cm 5cm 13 cm

nexus9112 [7]

Answer:

390cm³

Step-by-step explanation:

6cm×5cm×13cm= 30cm²×13cm= 390cm³

7 0

3 years ago