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AfilCa [17]
3 years ago
14

PLZ HELP ME ON THIS QUESTION GUYS!!

Mathematics
2 answers:
Lubov Fominskaja [6]3 years ago
8 0

a) 3.2a, -4 1/3a, -a

b) -2.133a+6

Misha Larkins [42]3 years ago
7 0

Answer:

The like terms are: {3.2a, 4 1/3a, a} {1, 7}

Simplify: -2.1333333...a + 6

Step-by-step explanation:

Hope this helps!

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The first eight quizzes in this class had average scores of 8,9,9,8,8,9,8,7. This gives a sample mean of 8.25 and a sample stand
alexira [117]

Answer:

<em>Test statistic </em>

<em>               </em>t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }  

            t = <em>1.076</em>

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given Mean of the Population (μ) = 8.0

<em>Mean of the sample (x⁻) = 8.25</em>

Given data

                  8,9,9,8,8,9,8,7

Given sample size  n= 8

Given sample standard deviation(S) = 0.661

<u><em>Step(ii):-</em></u>

<em>Null hypothesis : H:  (μ) = 8.0</em>

<em>Alternative Hypothesis :H:(μ) > 8.0</em>

<em>Degrees of freedom = n-1 = 8-1=7</em>

<em>Test statistic </em>

<em>               </em>t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }<em></em>

<em>              </em>t = \frac{8.25 -8.0}{\frac{0.661}{\sqrt{8} } }<em></em>

<em>            t =  1.076</em>

<em>Critical value </em>

<em>                    t₍₇,₀.₀₅₎   = 2.3646</em>

<em>The calculated value   t =  1.076 < 2.3646 at 0.05 level of significance</em>

<em>Null hypothesis is accepted</em>

<em>Test the hypothesis that the true mean quiz score is 8.0 against the alternative that it is not greater than 8.0</em>

<em></em>

3 0
3 years ago
64 POINTS
Mekhanik [1.2K]
L(t)=9-0.5t   
t=time in hours,
L(t)=length of candle at time t

(A) substitute t=1,2,3,4,5,6 respectively to get
(1,8.5)
(2,8)
(3,7.5)
(4,7)
(5,6.5)
(6,6)

(B) it is a function because none of the x-values duplicate, (nor the y-values).

(C) If the rate changes to 0.45 "/hr, the relation is still linear.
All linear function with finite slope are functions.

7 0
3 years ago
Read 2 more answers
Any two conditions of an object to float on liquid ​
bixtya [17]

Answer:

it needs to be less dense than water and weight needs to be equal to buoyant force.

8 0
3 years ago
Please Help Waiting 1 hour Please!!
mezya [45]

Step-by-step explanation:

yes the are similar because of AA Theorem

EAB is similar to ECD

4 0
3 years ago
Pls halp<br>list four nonzero multiples of<br>2<br>6<br>9<br>12<br>25<br>90​
Simora [160]

Multiples of 2: 2,4,6,8

Multiples of 6:6,12,18,24

Multiples of 12:12,24,36,48

Multiples of 25:25,50,75,100

Further explanation:

A multiple is a number that is obtained by multiplying an integer with that number.

We have to find multiples of given numbers:

So,

<u>1. Multiples of 2</u>

Four\ non-zero\ Multiples\ of\ 2: 2,4,6,8

<u>2. Multiples of 6</u>

Four\ non-zero\ Multiples\ of\ 6: 6,12,18,24

<u>3. Multiples of 12</u>

Four\ non-zero\ Multiples\ of\ 12: 12,24,36,48

<u>4. Multiples of 25</u>

Four\ non-zero\ Multiples\ of\ 25: 25,50,75,100

Keywords: Multiples, Non-zero multiples

Learn more about multiples at:

  • brainly.com/question/513185
  • brainly.com/question/5191341

#LearnwithBrainly

5 0
3 years ago
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