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Luden [163]
2 years ago
5

Consider the quadratic function f(x)= 9x^2+30x+25=0

Mathematics
1 answer:
Alchen [17]2 years ago
4 0

Answer:

D) 0

There is 1 real solution.

Step-by-step explanation:

Hi there!

f(x)= 9x^2+30x+25=0

This is written in standard form:

f(x)=ax^2+bx+c

This means:

a=9

b=30

c=25

The discriminant states:

D=b^2-4ac

If D>0, there are 2 real solutions.

If D=0, there is 1 real solution.

If D<0, there are 2 complex solutions.

Plug in the values:

D=30^2-4(9)(25)\\D=0

Therefore, there is 1 real solution.

I hope this helps!

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Find the value of N<br> 6:7 = n : 4 : 2
Aleksandr-060686 [28]

Answer:

3.428 or 3 wholes 3/7

Step-by-step explanation:

6 : 7 = n : 4 : 2

6 : 7 = n : 4

6/7 = n/4

7n = 24

n = 24 /7

n = 3. 428 or 3 wholes 3/7

4 0
2 years ago
1 Bradley is building a table
Harman [31]

Answer:

Step-by-step explanation: < 180

3 0
3 years ago
Assume Cylinder A and Cone B are the same height and the bases have the same radius. If A has a volume of 18π cm3, what is the v
disa [49]

Answer:

Option A  V_B=19\ cm^3

Step-by-step explanation:

The volume of a cone is:

V_B = \pi\frac{hr ^ 2}{3}

The volume of a cylinder is:

V_A = \pi(r ^ 2)h

Both figures have the same height h and the same radius r.

The volume of the cylinderV_A = 18\pi\ cm ^ 3

We want to find the volume of the cone.

Then, we find r and h:

V_A = 18\pi = \pi(r ^ 2)h

We simplify.

V_A = 18 = (r ^ 2)h

Then the product of (r ^ 2)h = 18.

We substitute this in the cone formula and get:

V_B =\frac{\pi}{3}(18)\\\\V_B = \frac{18}{3}\pi\\\\V_B=19\ cm^3

8 0
2 years ago
Read 2 more answers
10 points + brainless to first correct answer!<br> Total 18 points.
butalik [34]

Answer:

8

Step-by-step explanation:

hope it help toyou

love

6 0
3 years ago
Read 2 more answers
An ostrich egg weighs 64 ounces is the weight of the ostrich egg greater than 5 pounds?
IgorLugansk [536]

Answer:

An ostrich egg is 4 pounds, therefore, an ostrich egg is not greater than 5 pounds.

Step-by-step explanation:

Convert the ounces to pound.

1 pound = 16 ounces

Next, divide.

64 ÷ 16 = 4.

4 < 5

So, an ostrich isn't greater than 5 pounds

Have a wonderful day!

4 0
2 years ago
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