Find the volume v of the described solid s. the base of s is the triangular region with vertices (0, 0), (5, 0), and (0, 5). cross-sections perpendicular to the y-axis are equilateral triangles.
Answer:
i
Step-by-step explanation:
i = ⇒ i² = ( )² = - 1 , then
= i² × i² × i
= - 1 × - 1 ×i
= 1 × i
= i
4a-3b=10 (first equation)
2a+b =10 (second equation)
Now you multiply by -2 to get rid of a (as it is also common factor) but remember to always multiple the whole equation too
So…
4a-3b=10
-4a-2b =-20 (change of sign because positive x negative= negative but I’m sure you know that already)
Now your equation will equal b=-10 (4a-4a=0 and 3b-2b= b and 10-20=-10)
To find a you’ll have to sub b=-10 in any original equation but I will sub it in the second equation originally
2(-10)+b=10
-20+b=10
B=30 (-20+30=10)
The billboard dimensions to meet this requirement will be 8 feet and 51 feet.
<h3>What is the area of the rectangle?</h3>
Let L be the length and W be the width of the rectangle.
Then the area of the rectangle will be
Area of the rectangle = L×W square units
In a particular town, a billboard must be rectangular and cannot have a total area of more than 120 square feet.
There are no restrictions on its length or height.
Then the billboard dimensions to meet this requirement will be
L × W ≤ 120
Then the factor of the 120 will be
120 = 2 × 2 × 2 × 3 × 5
Then we have
L × W ≤ 2 × 2 × 2 × 3 × 5
Then the dimension will be
L × W ≤ 8 × 15
More about the area of the rectangle link is given below.
brainly.com/question/20693059
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