Ok so Jessica bought M pens, which cost $6.70 each.
She also bought 4 fewer pencils than pens, or (M-4) pencils, at $3.50 each.
So in total, she spent:
6.7M + 3.5(M-4)
= 6.7M + 3.5M - 14
= 10.2M -14
So she spent $(10M - 14) on pens and pencils.
Hope this helped
Answer:
-2 < x < 7
Step-by-step explanation:
Compound inequality is the one having two inequalities joined together.
Given that:
In compound equality these conditions will be written as:
-2 < x < 7
It depicts that value of x is greater than -2 and smaller than 7
<h3>G I V E N :</h3>
find the cost of the painting of a rectangular box of length 6m breadth 4m and height 3m at the rate of rs.25 per meter square
<h3>S O L U T I O N :</h3>
According to the question, first we need to get the T.S.A. or Total Surface Area of the cuboid then dividing it by ₹ 0.25 we can get the cost. After solving the concept will be more clear.
Let's start :
Here,
l represents length
b represents breadth
h represents height
Now, putting the values of all these we get
- T.S.A. = 2(6 × 4 + 4 × 3 + 3 × 6)
- T.S.A. = 2(24 + 12 + 18) m²
Now, we are given that cost of every square metre costs ₹ 0.25
So, for 108 m² it will cost = ₹ 108 × 0.25 = ₹ 27
<u>Hence, cost of painting the </u><u>rectang</u><u>ular box is ₹ 27</u>