D.-15x+30/7
-5(3x-6/7)=-15x+30/7
Answer:
117 cm²
Step-by-step explanation:
area of rectangle = 13 * 7 = 91cm²
area of upper one right angle triangle= 1/2 * 6.5 * 4 =13 cm²
area of both triangles = 13 cm² * 2 = 26 cm²
Total area = 91cm² + 26 cm²
--> 117 cm²
Answer:
2.86 hours = £26.57
Step-by-step explanation:
5 builders = 3.5 hours
<u>Express it in ratio form:</u>
5 : 3.5 (B1:H1)
<u><em>However, on Tuesday 2 builders(B2) are available. We can set up a proportion to find the number of hours.</em></u>
<u><em>Since This is an inverse proportion, it will be written like:</em></u>
=> B1:H1 = H2:B2
Where H2 = x(no. of hours)
=> 5 : 3.5 = x : 2
<u><em>Product of means = Product of Extremes</em></u>
=> 5*2 = 3.5x
=> 10 = 3.5 x
Dividing both sides by 3.5
=> x = 2.86 hours
<u><em>Now, On Tuesday:</em></u>
1 hour = £9.3
<u><em>For 2.86 hours,</em></u>
2.86 hours = £9.3 × 2.86
2.86 hours = £26.57
84 is the median of the numbers
