Explanation

2 / ? = ? / 50

Let the missing number be x:

So,  

2 / x = x / 50

Cross-multiply:  

2 × 50 = x × x  

100 = x²

Now take the square root:  

x = ±10

Explanation

1. Ignore the decimals for a moment and multiply the numbers as whole numbers:  

   896 × 70 = 62,720

2. Count the total decimal places in the original numbers:  

   - 0.00896 has 5 decimal places  

   - 0.70 has 2 decimal places  

   Total decimal places = 5 + 2 = 7

3. Place the decimal point in the product so there are 7 digits after it:  

   62,720 → move decimal 7 places left → 0.0062720

So, 0.00896 × 0.70 = 0.006272

Explanation

√4.41 = 2.1

Because:  

2.1 × 2.1 = 4.41

Explanation

250 mm + 350 mm = 600 mm  

Since 10 mm = 1 cm,  

600 mm ÷ 10 = 60 cm

Explanation

3/50 = 0.06

Explanation

79 × 79 = 6,241

Explanation

Bevel gears are specifically designed to transmit rotational power between shafts that intersect at a 90-degree angle.

Spur gears only transmit power between parallel shafts

Helical gears can transmit power between parallel or non-parallel shafts, but are not the primary choice for a 90-degree right-angle power transfer.  

Explanation

[1  8  

9  2]  FIND TRANSPOSE OF A MATRIX?

The additive inverse of a matrix A is a matrix -A, where each element is the negative of the corresponding element in A.

Given:  

A =  

[ -5 8 ]  

[  6 -2 ]

Then,  

-A =  

[ 5 -8 ]  

[ -6 2 ] ✔

Because:  

- (-5) = 5  

- (8) = -8  

- (6) = -6  

- (-2) = 2

Explanation

You are now facing in the South direction

Explanation

Given ratio: 35 : 84

Step 1: Find the GCD (Greatest Common Divisor) of 35 and 84  

GCD of 35 and 84 is 7

Step 2: Divide both terms by 7  

35 ÷ 7 = 5  

84 ÷ 7 = 12

Simplest form: 5 : 12