Answer:
The answer is given below
Step-by-step explanation:
The equation of a quadratic function is given by:
Ax² + Bx + C where A, B and C are the coefficients of the quadratic equation. If the coefficient of x² (i.e A) is a negative value then the graph opens down, the value of C determines the y intercept.
The equation of a parabola with y-intercept greater than 3 and opens down can be given as -2x² -6x + 4. Since the coefficient of x² is negative it opens down and C = 4, it has a y intercept of 4 > 3
Let us assume a vertical stretch of 2, the new equation becomes:
2(-2x² -6x + 4)
-4x² - 12x + 8
To solve:
-4x² - 12x + 8 = 0
A = -4, B = -12 and C = 8
Using the quadratic formula:
Answer:
The area is 6.4cm, the perimeter is 12cm
Step-by-step explanation:
The formula to calculate area is
Where is the height
And for the perimeter, you just add up the size of the sides.
Answer:
The width is 10cm and the length is 50cm.
The top and bottom sides are each 50 cm, and the right and the left side of the rectangle is 50cm. Which means, if you multiply 50 by two, and 10 by two, then add them together, you will get the perimeter of 120 cm. Formula of Perimeter: Length + Length + Width + Width = Perimeter
I found the answer by multiplying the width (10cm) by 2. I then got 20. After that I subtracted 20 from the perimeter and got 100. Then, I divided that by 2 and got the length of each of the sides which is 50cm.
The bed of the truck is a rectangle, 4-ft wide and 8-ft long.
The diagonal of the rectangle is
√ (4² + 8²)
= √ (16 + 64)
= √ (80)
= 8.9442... feet
8.9442... feet = 8 feett 11.33 inches
Rounded to the nearest inch: 8 ft 11 in .