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salantis [7]
3 years ago
15

What value of b completes the function f(x)=-x^2+bx+1?

Mathematics
1 answer:
gavmur [86]3 years ago
7 0

Answer:

Step-by-step explanation:

It is hard to guess the coordinates of any points, because the graph doesn't go through any intersections of the grid.

Fortunately, I can tell that the axis of symmetry is x=2.

Put the equation into vertex form by completing the square.

axis of symmetry = b/2

b/2 = 2

b = 4

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if a rectangle has a greater perimeter than another rectangle, does it also have a greater area? Explain.
Lemur [1.5K]
No.

The maximum possible area given a constant amount of material for a quadrilateral will always be a square.

For example if the material for the perimeter is 64 we can form a rectangle that is 22 by 10 which will have an area of 220 u^2.

However a square using the same amount of material will have sides of 64/4=16 and an area of 16^2=250 u^2

So in general the area is maximize the closer the sides are to being equal and minimized as the difference between the sides becomes greater.  In the case of comparing the material, perimeter, of a rectangle to a square for the same amount of material the square will use less material than the rectangle.

A square can have a smaller perimeter and a greater area that a rectangle.

In the example above the rectangle had a perimeter of 64 u and an area of 220 u^2.  If we made a square with just 60 u, it would have an area of 225 u^2.
4 0
3 years ago
What is 7/5 rounded as a decimal to hundredths pls answer quick
Firdavs [7]
Its 1.4 just use a calculator
3 0
3 years ago
If x = 13 units and h = 11 units, then what is the area of the rhombus pictured above?
erik [133]

Answer:

M5|L12  Fractional Sides

Step-by-step explanation: answer is in the link. copy and paste it. Trust me!

6 0
3 years ago
I'm just confused on all of it
balandron [24]
Let's solve for x.<span><span><span>3x</span>+<span>4y</span></span>=36</span>Step 1: Add -4y to both sides.<span><span><span><span>3x</span>+<span>4y</span></span>+<span>−<span>4y</span></span></span>=<span>36+<span>−<span>4y</span></span></span></span><span><span>3x</span>=<span><span>−<span>4y</span></span>+36</span></span>Step 2: Divide both sides by 3.<span><span><span>3x</span>3</span>=<span><span><span>−<span>4y</span></span>+36</span>3</span></span><span>x=<span><span><span><span>−4</span>3</span>y</span>+12</span></span>Answer:<span>x=<span><span><span><span>−4</span>3</span>y</span>+<span>12

i got dis

</span></span></span>
4 0
3 years ago
Mr. Tamen’s dining room is shaped like a rectangle and has a perimeter of 48 feet. If the width of his dining room measures 11 f
Ann [662]

Answer:

Do you still need help??

Step-by-step explanation:

4 0
3 years ago
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