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ohaa [14]
3 years ago
15

What are the zeros of the polynomial function f(x) = (x – 6)(x – 2)(x + 7)?

Mathematics
1 answer:
vovikov84 [41]3 years ago
8 0
The given polynomial is in factored form. So in order to find the zeros of the polynomial, set each factor equal to zero and find the value of x. All such values of x will be the zeroes of the polynomial.

So,
x - 6 = 0 
⇒ x = 6

x - 2 = 0
⇒ x = 2

x + 7 =0
⇒ x = -7

Thus the zeros of the given function are x = 6, x = 2 and x = -7
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3 years ago
13. What is the result of adding 5.4a + 7.1 and -1.28 - 6.3?
den301095 [7]

Answer:

C. 4.2a + 0.8

Step-by-step explanation:

Given:

The two binomials given for addition are:

5.4a+7.1 and -1.2a-6.3

Now, adding both the binomials, we get:

5.4a+7.1+(-1.2a-6.3)

Distributing the positive sign inside the second binomial, we get:

5.4a+7.1-1.2a-6.3

Now, combining like terms using the commutative property of addition, we get:

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Simplifying the above expression, we get:

(5.4-1.2)a+0.8\\4.2a+0.8

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8 0
3 years ago
The two dot plots show the number of miles ran by 14 students at the beginning and at the end of the school year compare each me
Naddika [18.5K]

The two dot plots are missing, so i have attached it.

Answer:

The mean at the beginning of the school year was 9.5 miles and the mean at the end of the school year was 10.2 miles

Step-by-step explanation:

From the attached image, we are told to compare the means for each plot to the nearest tenth.

Mean = Σx/n

Now, from the image, total number of miles run by the 14 students at the beginning of the school year is;

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Mean of miles run at the beginning of the school year = 133/14 = 9.5 miles

Again, from the table, total miles run at the end of the school year = (2 × 8) + (2 × 9) + (4 × 10) + (3 × 11) + (3 × 12) = 143

Mean of miles run at the end of the school year = 143/14 = 10.2 miles

Thus;

The mean at the beginning of the school year was 9.5 miles and the mean at the end of the school year was 10.2 miles

5 0
3 years ago
Dobby the house-elf has dropped all his socks on the floor in the middle of the night! He has 30 red socks, 22 gold socks and 14
Ugo [173]
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3 years ago
Help i want to know what is 5m and 10m in feet and explain if you can
tatyana61 [14]
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