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3 years ago

3) Slope = 4, passing through (-1,5) Slope

Mathematics

2 answers:

Nonamiya [84]3 years ago

7 0

Be more specific boo xxo

Tanzania [10]3 years ago

3 0

4x +y-21=o
explanation using point grade formula y
1
)
=
m
(
x
−
x
1
)

where
(
x
1
,
y
1
)
is
(
4
,
5
)
(
y
−
5
)
=
−
4
(
x
−
4
)

y
−
5
=
−
4
x
+
16

4
x
+
y
−
21
=
0

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I need help with these two questions

Kitty [74]

Question 1
The answer is last one. Y would equal 7+24 not 7-24.

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3 years ago

Small cubes with edge lenghts of 1/4 will be packed into the rectangular prism how many small cubes will be needed to completley

Olegator [25]

Answer:

9216

Step-by-step explanation:

number of small cubes that would fill the prism = volume of prism / volume of small cubes

volume of a prism = length x width x height

3 x 6 x 8 = 144

volume of cube = length³

(1/4)³ = 1/64

144 ÷ 1/64

144 x 64 = 9216

6 0

3 years ago

What is the mean absolute deviation for the data set? {10, 15, 18, 20, 24}

Arlecino [84]

Answer:

3.92

To find the mean absolute deviation of the data, start by finding the mean of the data set.

Find the sum of the data values, and divide the sum by the number of data values.

Find the absolute value of the difference between each data value and the mean: |data value – mean|.

Find the sum of the absolute values of the differences.

Divide the sum of the absolute values of the differences by the number of data values.

7 0

3 years ago

Read 2 more answers

Finding a polynomial of a given degree with given zeros

galben [10]

Since f(x) is a polynomial with 3rd degree, then it will have 3 roots (zeroes)

One of them is real and the other two are complex conjugate roots

Since the real root is 4, then

x = 4

Since the complex root is (1 - i), then

The other root will be the conjugate of it (1 + i)

x = (1 - i)

x = (1 + i)

To find f(x) we will multiply the three factors of it

We can get the factors from the zeroes

$x=4$

Subtract 4 from both sides

$\begin{gathered} x-4=4-4 \\ x-4=0 \end{gathered}$

The first factor is (x - 4)

$\begin{gathered} x=1-i \\ x-(1-i)=(1-i)-(1-i) \\ x-1+i=0 \end{gathered}$

The second factor is (x - 1 + i)

The third factor is (x - 1 - i)

$f(x)=(x-4)(x-1+i)(x-1-i)$

We will multiply them to find f(x)

$\begin{gathered} (x-1+i)(x-1-i)= \\ x^2-x-ix-x+1+i+ix-i-(i^2)= \\ x^2-2x+1-(-1)= \\ x^2-2x+1+1= \\ x^2-2x+2 \end{gathered}$

Multiply it by (x - 4)

$\begin{gathered} f(x)=(x-4)(x^2-2x+2) \\ f(x)=x^3-2x^2+2x-4x^2+8x-8 \\ f(x)=x^3-6x^2+10x-8 \end{gathered}$

The answer is

$f(x)=x^3-6x^2+10x-8$

5 0

1 year ago

Which sum(s) represent(s) a rational?

iogann1982 [59]

Not sure but I believe letter B) 3+4 is rational since the answer is 7 and 7 is a rational number and it can be expressed as a quotient. The sum of a rational number and an irrational number is irrational. The sum of two rational numbers is rational

8 0

3 years ago