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Citrus2011 [14]
4 years ago
9

Negative three eighth minus one tenth A. 19/40 B. -19/40 c.-3/8 D. 2/9

Mathematics
2 answers:
djverab [1.8K]4 years ago
7 0
B. -19/40 is the answer.
xxMikexx [17]4 years ago
7 0

Answer:

B)

Step-by-step explanation:

LCM of 8,10 =40

\frac{-3*5}{8*5}=\frac{-15}{40}\\\\\frac{1*4}{10*4}=\frac{4}{10}\\\\ \frac{-3}{8}-\frac{1}{10}=\frac{-15}{40}-\frac{4}{40}\\\\=\frac{-15-4}{40}=\frac{-19}{40}

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What is the slope of the line? i-Ready Lesson Linear Equations and Slope Level H
nydimaria [60]

Answer:

Slope of the line = 2

Step-by-step explanation:

Slope of a line through two points lying on the line (x_1,y_1) and (x_2,y_2) is given by,

Slope = \frac{y_2-y_1}{x_2-x_1}

From the figure attached,

Given line is passing through two points (0, 1) and (1, 3).

Therefore, slope of the line will be,

Slope = \frac{3-1}{1-0}

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4 0
3 years ago
Write an equation for the cubic polynomial function whose graph has zeroes at 2, 3, and 5.
TiliK225 [7]

we know that

For a polynomial, if x=a is a zero of the function, then (x−a) is a factor of the function. The term multiplicity, refers to the number of times that its associated factor appears in the polynomial.

So

In this problem

If the cubic polynomial function has zeroes at 2, 3, and 5

then

the factors are

(x-2)\\ (x-3)\\ (x-5)

Part a) Can any of the roots have multiplicity?

The answer is No

If a cubic polynomial function has three different zeroes

then

the multiplicity of each factor is one

For instance, the cubic polynomial function has the zeroes

x=2\\ x=3\\ x=5

each occurring once.

Part b) How can you find a function that has these roots?

To find the cubic polynomial function multiply the factors and equate to zero

so

(x-2)*(x-3)*(x-5)=0\\ (x^{2} -3x-2x+6)*(x-5)=0\\ (x^{2} -5x+6)*(x-5)=0\\ x^{3} -5x^{2} -5x^{2} +25x+6x-30=0\\ x^{3}-10x^{2} +31x-30=0

therefore

the answer Part b) is

the cubic polynomial function is equal to

x^{3}-10x^{2} +31x-30=0

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3 years ago
Read 2 more answers
For simple linear regression, y = β0 + β1x + u, which one of the following statements is true?
RSB [31]

Answer:

Option a) u is called the "error term". It is the error we make in prediction

Option d) x is called the independent variable because x is independent from y and u.

Step-by-step explanation:

We are given the following information in the question:

y = \beta_0 + \beta_1x + u

where y is the dependent variable, x is the independent variable.

\beta_0: It is the value of y when x is zero, that is y-intercept.

\beta_1: It is the coefficient of x in predicting the dependent variable y.

u is the error term.

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Thus, Option A) u is the error term and Option D)  x is called the independent variable because x is independent from y and u are the correct answer.

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3 years ago
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2 years ago
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enyata [817]

x=negative 1

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x=-1x=−1

3 Substitute x=-1x=−1 into y=2x+3y=2x+3.

y=1y=1

3 0
3 years ago
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