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user100 [1]
3 years ago
14

We’re is the blue dot on the number line?

Mathematics
2 answers:
MrMuchimi3 years ago
8 0
The answer you are needing/looking for is -4.9 ;)
BartSMP [9]3 years ago
7 0

Answer:

thank u !! -4.9

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A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 447 gram setting. It is
lord [1]

Answer:

A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 447 gram setting.

H_0:\mu = 447\\H_a:\mu\neq 447

Mean = \mu = 447\\s = 21\\x = 443

n = 19

Since n < 30 , so we will use t test

t=\frac{x-\mu}{\frac{s}{\sqrt{n}}}

Substitute the values :

t=\frac{443-447}{\frac{21}{\sqrt{19}}}

t=−0.8302

t calculated = -0.830

degree of freedom = n-1 = 19-1 = 18

A level of significance=α=0.025

t_{(df,\frac{\alpha}{2})}=2.093

t critical = 2.093

t calculated < t critical

So, We failed to reject null hypothesis

Decision rule  -0.830< 2.093 So, We failed to reject null hypothesis

4 0
3 years ago
What are the roots of the polynomial equation x3 - 6x = 3x2 - 8? Use a graphing calculator and a system of equations.
makkiz [27]

Answer:

d : 4, 1, -2.

Step-by-step explanation:

There's no need for a calculator in my opinion because we can use the rational root theorem which states that the equations of this form:

\sum_{i=0}^{n} a_{i}x^i = 0 = a_{0} + a_{1}x + a_2x^2 + ... + a_nx^n = 0\\ a_i \in \mathbb{Z}

Have rational roots, than the roots are of the form: \frac{k \cdot a_o}{p \cdot a_n}, \ where \ k, p \in \mathbb{Z}.

Rewriting the equation we have:

x^3 - 3x^2 -6x + 8 = 0\\By \ our\ previous \ claim \ x \in D_8 \ where \ D_n \ the \ set \ of \ divisors \ of \ n.\\D_8 = \{\pm 1, \pm 2, \pm 4, \pm 8\} \\We \ plug \ in \ some \ number from \ D_8.\\Letting \ x = -2;\\(-2)^3 -3(-2)^2 -6(-2) + 8 = 0 \ \ \ Thus \ x+2 \ is \ a \ factor.\\We \ can \ now \ simplify \ the \ eq. \ using \ Polynomial \ Long \ Division.

x^3 -3x^2 -6x + 8 = (x+2)(Q(x))\\To \ find \ Q \ we \ divide \ the \ original \ equation \ by \ x + 2; which \ yields:\\Q(x) = x^2 - 5x + 4.\\So \ we \ can \ use \ the \ quadratic \ formula \ to \ find \ the \ roots:\\x = 4,x = 1. \\Thus \ x \in \{-2, 1, 4\}. \ \ These \ are \ all \ the \ roots.

5 0
4 years ago
Please help me thank you very much.<br><br> Please answer all 4 questions.
Mnenie [13.5K]
1. HI Because two parallel lines have to be on the same plane and never intersect.

2. Skew means the never intersect and they aren't on the same plane so it is GK and DH

3. Angle 3 corresponds because it is the bottom left and 7 is the bottom left.

4. 3 and 5 are same-side interior because they are both on the left side and both are inside.

Hope this helps!
6 0
3 years ago
Please help me with this
uranmaximum [27]

i think its 12

Step-by-step explanation:

3 0
3 years ago
What is the measure of
Marina86 [1]

Answer:

The measure is the measure that it is you forgot the picture

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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