Answer:
Step-by-step explanation:
B = 2/5(A - 9)
(5/2)B = A - 9
A = 9 + (5/2)B
-- sitting erect, shoulders back, chest out, head up, spine straight
-- pen held loosely and comfortably in your hand
-- forearm resting lightly on the table
-- digit characters formed neatly and clearly, with uniform size and slant
<em>3 0 9, 0 5 8, 3 0 4</em> .
Answer:

Step-by-step explanation:
<u>Solution Of A System Of Equations
</u>
A system of linear equations is given as
There are many methods to solve them. We will use the method of reduction
The given system is

Multiplying the second equation by -3

Adding the resulting equations


Answer: 15 boys
Explanation: ratio 5:7
5 + 7 = 12
Number of boys = 5/12 × 36