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lisabon 2012 [21]
3 years ago
9

Y-3=2(x+1) complete the missing value in the solution of the equation. (-1, __ )

Mathematics
2 answers:
sergeinik [125]3 years ago
6 0

Answer:

Step-by-step explanation:

y-3=2(x+1)

or y=2(x+1)+3

when x=-1,y=2(-1+1)+3=3

solution is (-1,3)

Dvinal [7]3 years ago
5 0

Answer:

Step-by-step explanation:

Distribute:

Y+-3+(-2)(x)+(-2)(1)

Y+-3+-2x+-2

Combine like terms

Y+-3+-2×+2

(-2×)+(y)+(-3+-2)

-2x+y+-5

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What is the simplest form of the expression (–12.7y – 3.1x) + 5.9y – (4.2y + x)?
Doss [256]

Answer:

<h2>-11y - 4.1x</h2>

Step-by-step explanation:

(-12.7y-3.1x)+5.9y-(4.2y+x)\\\\=-12.7y-3.1x+5.9y-4.2y-x\qquad\text{combine like terms}\\\\=(-12.7y+5.9y-4.2y)+(-3.1x-x)\\\\=-11y-4.1x

7 0
3 years ago
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A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 419 gram setting. It is
Dahasolnce [82]

Answer:

The calculated t- value = 1.09 > 3.19 at 0.025 level of significance

Null hypothesis is rejected

There is sufficient evidence to support the claim that the bags are underfilled

Step-by-step explanation:

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

Given the mean of the Population(μ)  = 419 grams

The sample size 'n' =19

Given mean of the sample x⁻ = 412

Given variance of the sample S² = 784

                                                 S = √784 = 28

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

<u><em>Null hypothesis: H₀</em></u>: There is no sufficient evidence to support the claim that the bags are underfilled.

<u><em>Alternative hypothesis: H₁:</em></u>

There is sufficient evidence to support the claim that the bags are underfilled.

Test statistic

                     t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }

                    t = \frac{412 -419}{\frac{28}{\sqrt{19} } }

                   t = -1.09

                 |t| = |-1.09|

<em>Degrees of freedom   ν = n-1 = 19-1 =18</em>

<em>t₀.₀₂₅ =  3.19</em>

<u><em>Final answer:</em></u><em>-</em>

The calculated t- value = 1.09 > 3.19 at 0.025 level of significance

Null hypothesis is rejected

There is sufficient evidence to support the claim that the bags are underfilled

                   

8 0
3 years ago
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svp [43]

Answer:

about 65.4 inches cubed

Step-by-step explanation:

The formula for the volume of a sphere is 4/3πr^3.

V = 4/3πr^3

   = 4/3π(2.5^3)

   = 20.83π = <u>about 65.4 inches cubed</u>

4 0
3 years ago
2.072539 rounded to the nearest hundredth
zalisa [80]

Answer:

2.07

Step-by-step explanation:

3 0
3 years ago
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allsm [11]

Answer:

A. 2 (0)=0

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Step-by-step explanation:

You have to multiply the X numbers by 2 for example 2x , x=2 , 2x2=4

8 0
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