Explanation

0.87-0.48=0.39

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RY 31-12-2022

Explanation

To change a mixed number to an improper fraction, multiply the denominator (3) by the whole number part (4), then add the numerator (2):

(4 × 3) + 2 = 12 + 2 = 14

So, the improper fraction is: 14/3

Explanation

8 multiplied by 9 equals 72.

Explanation

Let's solve the expression step by step following BODMAS/BIDMAS (Brackets, Orders, Division/Multiplication, Addition/Subtraction) rules:

18 - 6 / 2 + 4 * 3

1. Division first:
   6 / 2 = 3
   Expression becomes: 18 - 3 + 4 * 3

2. Multiplication next:
   4 * 3 = 12
   Expression becomes: 18 - 3 + 12

3. Now, solve from left to right:
   18 - 3 = 15
   15 + 12 = 27

Explanation

Given:
$3x + 7 = 5x - 2$

Step 1: Get all x terms on one side

Subtract $3x$ from both sides:

$$3x+7-3x=5x-2-3x\Rightarrow 7=2x-2$$

Step 2: Get constants on the other side

Add 2 to both sides:

$$7+2=2x-2+2\Rightarrow 9=2x$$

Step 3: Solve for x

Divide both sides by 2:

x=9​/2=4.5

Final Answer: 4.5​

So actually, the correct answer is 4.5, not 5.

Explanation

Let’s solve the equation z + 3 = 5

z = 5 - 3 = 2

Hence, if z + 3 = 5,

then z = 2.

Explanation

= √(1/2 × 162)

= √(0.5 × 162)

= √(81)

= 9 

Explanation

The square root of 144 is:

√144 = 12

Since 12 × 12 = 144.

So, the correct answer is: 12

Explanation

(9+16)*49

=25*49

= 1225

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RY 31-12-2022

Explanation

 147.5 is the external angle between the hands of a clock when 5 minutes to 4 o'clock

ND29-11-2022