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insens350 [35]
2 years ago
14

f(x) is a polynomial of degree 4 with real coefficients; two of its zeros are -3 (with a multiplicity of one) and 4 - i . How ma

ny x-intercepts does f(x) have? Explain how you know using complete sentences. Make sure your explanation is convincing and thorough. ​
Mathematics
1 answer:
Aleksandr-060686 [28]2 years ago
8 0

Answer:

Step-by-step explanation:

complex zeros always occur in pairs.

so zeros are -3,4-i,4+i

so fourth zero also intersects x-axis.

Hence there are two x-intercepts only.

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The hypothesis test of cost parameters indicates whether: a.the total cost is similar to that of the prior periods. b.the parame
maksim [4K]

Answer:

B. The Parameter are different from Zero

Step-by-step explanation:

3 0
3 years ago
A rectangle has a height of a² + 3 and a width of a² + 2a + 5.
valentina_108 [34]

Answer:

Area =  a^4+2a^3+8a^2+6a+15

Step-by-step explanation:

The area of a rectangle is given by:

Area = Height * Width

The expressions for height and width are given. We just need to multiply and add like terms (if applicable) to find the expression for the area of the rectangle.

Remember to use distributive property:

(a+b)(x+y) = ax + ay + bx + by

Thus, we have:

(a^2+3)(a^2+2a+5)\\=(a^2)(a^2)+(a^2)(2a)+(a^2)(5)+3a^2+6a+15\\=a^4+2a^3+5a^2+3a^2+6a+15\\=a^4+2a^3+8a^2+6a+15

THis is the expression for area.

5 0
3 years ago
Find the coordinates of the three points on the graph of y = (1/2)x² -2x whose x-values are −2, 0, and 4.
MaRussiya [10]

Answer:

y = 6

y = 0

y = 0

Step-by-step explanation:

y=\frac{1}{2}x² -2x

When, x = -2

y=\frac{1}{2}\times (-2)^2-2\times(-2)\\\Rightarrow y=\frac{1}{2}4+4\\\Rightarrow y=2+4\\\Rightarrow y=6

y = 6

When, x = 0

y=\frac{1}{2}\times (0)^2-2\times(0)\\\Rightarrow y=0+0\\\Rightarrow y=0

y = 0

When, x = 4

y=\frac{1}{2}\times (4)^2-2\times(4)\\\Rightarrow y=\frac{1}{2}16-8\\\Rightarrow y=8-8\\\Rightarrow y=0

y = 0

3 0
3 years ago
Free brainliest for first to answerrr . check my questions on my profile for more like this !
Elena L [17]
Am I supposed to answer anything lol
6 0
2 years ago
Read 2 more answers
Please help. Also please show your work. Y/5 - 2/5
Maurinko [17]

Answer:

0.2(y-2)

Step-by-step explanation:

factor out 1/5 from the expression

1/5×(y-2)

0.2(y-2)

8 0
2 years ago
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