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Liula [17]
2 years ago
15

The graph of a quadratic polynomial intersects x-axis at the points (-4, 0) and (5, 0). Find

Mathematics
1 answer:
Setler79 [48]2 years ago
3 0

Answer:

Quadratic polynomial is x^2 - x - 20

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A fundraiser is being held to raise money for a new school playground. Of every $20 raised, $16 will be spent on playground equi
erastovalidia [21]

Answer:

$625

Step-by-step explanation:

x = total money raised

16/20 = 0.8

80% of x equals $500

0.8*x = 500

x = $625

4 0
2 years ago
Please help i am really struggling . i really dont get it thanks :)
Dima020 [189]

Answer:

I=P-A          

___________________________

6 0
2 years ago
F(x) = x4 - 32x2 + 7
xenn [34]
F is increasing if f '(x) = 4x^3<span> - 64x >0, so it is the same of  x(x^2 -16)>0, implies x>0 or (x-4)(x+4)>0, so x> + or -4
the answer is </span><span>(-4 , 0) ∪ (4 , infinity)

</span>f is decreasing if f '(x) = 4x^3 - 64x <0, so it is the same of  x(x^2 -16)<0, implies x<0 or (x-4)(x+4)<0, so x< + or -4
the answer is (- infinity, -4) ∪ (0 , 4)

<span>the local minimum and maximum
</span>f '(x) =0, impolies x=+ or -4, or x=0
or f'(o)=0,  and  f'(- 4)=f'(4)= 0, 
M(-4, 0) or M(4, 0) or M(0,0)

<span>inflection points can be found by solving f '' (x)=12x^2 - 64 =0
</span>x=+ or - 4sqrt(3) / 3
so the inflection point is  and M(- 4sqrt(3) / 3, f'' ( -4sqrt(3))  (smaller x value), and M(4sqrt(3) / 3, f'' (4sqrt(3)) (larger x value)

f is concave up if f ''>0
it means 12x^2 - 64>0, so the interval is (- infinity, -4sqrt(3) U (4sqrt(3), infinity)

f is concave down if f ''<0
it means 12x^2 - 64<0 so the interval is (-4sqrt(3)) U (4sqrt(3))

4 0
3 years ago
Please answer this question only if you know the answer!!! :)
Anon25 [30]

A full circle is 360 degrees.

The circle is separated into 8 parts, so each arc is 1/8 of a circle, which equals: 360/8 = 45 degrees.

There are 2 45 degree arcs between B and C, so the arc from B to C = 45 x 2 = 90 degrees.

The answer is B.

6 0
3 years ago
1. Each cube has 6 faces. If Tandra
Ede4ka [16]

1 cube = 6 Faces

2 cubes = 10 Faces

7 cubes = 36 Faces

2÷7 = 3 × 10 = 30 + 6 = 36

The Answer is <u>3</u><u>6</u>

6 0
2 years ago
Read 2 more answers
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