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KengaRu [80]
3 years ago
10

Solve. x2 – 10x + 21 < 0

Mathematics
1 answer:
Marysya12 [62]3 years ago
4 0

Answer:

(3,7)

Step-by-step explanation:

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JulsSmile [24]

Answer:

3.643 X 10 -1

Step-by-step explanation:

7 0
3 years ago
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An ice cream shop sells cones at the volume of 94.2 cubic meters they want to double the volume of the cones without changing th
marin [14]
The volume of a cone is V=\pi r^2\frac{h}3 where r = radius and h = height. If the cone has a volume of 94.2 cm³ (I assume you didn't mean m³ because that would be ridiculously huge) and a height of 10 cm, we can plug these values into the formula to find the radius. Don't do any rounding.

94.2 = \pi r^2\frac{10}3 \\ 282.6 = \pi r^2 *10 \\ 28.26 = \pi r^2 \\ 8.99543738355 = r^2 \\ 2.99923946752=r

Now we know that's going to be the radius of our <em>new </em>cone as well since we're keeping the diameter the same. The volume is going to be double 94.2 which is 188.4. Let's solve for the height.

188.4 = \pi (2.99923946752)^2\frac{h}3 \\ 188.4 = \pi(8.99543738355)\frac{h}3 \\ 188.4 = 28.26\frac{h}3 \\ 565.2 = 28.26h \\\\ \boxed{h = 20, r\approx 3}
5 0
3 years ago
I NEEDDDD HELPPPP ITS URGENTTTT!!
babymother [125]

Answer:

(x-9)²+(y-5)²=64

Step-by-step explanation:

Centre is (9,5) and radius is 16*pi/2*pi=8. Plug it in the equation of circles

3 0
3 years ago
What is the minimum number of x intercepts that a polynomial of degree 11 can? have?
stiks02 [169]

The degree of the polynomial will tell you the max amount of zeros you will have. 11 in this case.

However you can also have 9,7,5,3,1 (keep subtracting by 2)

So the answer is 1.
7 0
3 years ago
In right triangle HJK, angle J is a right angle and tan angle H = 1. Which Statement about triangle HJK MUST BE TRUE
Anna [14]
Tan angle h=1 i think '
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4 years ago
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