Answer:
15. Area of parallelogram = bh
b = 9m
h = 4m
a = 9*4 = 36m^2
You can also use the rectangle property here.
a = l*b
l = 9
b = 6
a = 9*6 = 54 m^2
Though I would prefer the first one better.
16. Area of triangle = 1/2*bh
b = 17m
h = 3
a = 17*3/2 = 51/2 = 25.5m^2
18. Area of a trapezium = a+b/2*h (a and b are two parallel sides and h the height)
a = 15
b = 7
h = 15
a = 15+7/2*15 = 22/2*15 = 11*15 = 165m^2
19. Area of triangle = 1/2*bh
b = 24
h = 7
a = 24*7/2 = 168/2 = 84
Hope u understood
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Simplify the left hand side by multiplying the terms in the parenthesis by 3/4, i.e. divide them by 4 and multiply them by 3:
![\dfrac{3}{4}(8x-4)=7x+2 \iff 3(2x-1)=7x+2 \iff 6x-3 = 7x+2](https://tex.z-dn.net/?f=%5Cdfrac%7B3%7D%7B4%7D%288x-4%29%3D7x%2B2%20%5Ciff%203%282x-1%29%3D7x%2B2%20%5Ciff%206x-3%20%3D%207x%2B2%20)
Subtract 6x from both sides:
![-3=x+2](https://tex.z-dn.net/?f=-3%3Dx%2B2)
Subtract 2 to both sides:
![x=-5](https://tex.z-dn.net/?f=x%3D-5)
Answer:
Step-by-step explanation:
Adam plans to choose a video game from a section of the store where everything is 75% off.
The expression written by him for this situation is d - 0.75d.
Here, the part d represents the sale price before discount and the part 0.75d is the discount amount.
The expression written by Rena is 0.25d.
Here, the part 0.25d is the price after discount. Since 75% is the discount, the rate after disount is 25% and 25% of d is 0.25d.
And that is how you get your answer
Y=-3x+2 bc the line is going down so it’s negative and the y intercept is 2