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Natali [406]
2 years ago
14

The circumference of a circle is 15.7 centimeters. Use 3.14 for π to determine the diameter, radius, and area.

Mathematics
1 answer:
Tju [1.3M]2 years ago
3 0

Answer:

Diameter is: 5

Radius is: 2.5

Area is: 19.63

Step-by-step explanation:

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Which line has an equation of Y= -5x+4 in slope-intercept form?
Delvig [45]

Answer:

The line passing through the points (2, -14) and (4, -24)

Step-by-step explanation:

5 0
3 years ago
The proceeds of a $7,500.00, 10 percent simple discounted note for 85 days is
SIZIF [17.4K]

Answer:

7325.34

Step-by-step explanation:

5 0
2 years ago
What are the possible numbers of positive, negative, and complex zeros of f(x) = −3x4 −
Anna007 [38]

Answer:

b.

Step-by-step explanation:

We have to look at sign changes in f(x) to determine the possible positive real roots.

f(x)=-3x^4-5x^3-x^2-8x+4

There is only one sign change here, between the -8x and the +4.  So that means there is only 1 possible real positive root.

Now we have to look at sign changes in f(-x) to determine the possible negative real roots.

f(-x)=-3x^4+5x^3-x^2+8x+4

There are 3 sign changes here.  That means there are either 3 negative roots or 3-2 = 1 negative root.  So we have:

1 positive

3 or 1 negative

We need to pair them up now with all the possible combinations.

If we have 1 positive and 1 negative, we have to have 2 imaginary

If we have 1 positive and 3 negative, we have to have 0 imaginary

Keep in mind that the total number or roots--positive, negative, imaginary--have to add up to equal the degree of the polynomial.  This is a 4th degree polynomial, so we will have 4 roots.

7 0
2 years ago
I need help on this h/j=15 for j
4vir4ik [10]
 x in (-oo:+oo)

h/j = 15 // - 15

h/j-15 = 0

h*j^-1-15 = 0

x należy do R

x in (-oo:+oo)
8 0
3 years ago
(x-yi)(3+5i) is the conjugate of 6+24i
Nataly_w [17]

Answer:

x=-3

y=3

(-3-3i)(3+5i)

Step-by-step explanation:

(x-yi)(3+5i)\\=3x+5xi-3yi+5y\\=(3x+5y)+(5x-3y)i\\

and we have that must equal

6-24i

3x+5y=6

5x-3y=-24 and if we work it we found out that the solutions are

x=-3 and

y=3

5 0
2 years ago
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