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san4es73 [151]
3 years ago
7

Can I get help please

Mathematics
2 answers:
RUDIKE [14]3 years ago
6 0
Slope formula : (y2 - y1) / (x2 - x1)
(-2,1)....x1 = -2 and y1 = 1
(4,-1)...x2 = 4 and y2 = -1
slope = (-1 - 1) / (4 - (-2) = -2/6 = - 1/3 <==
katrin [286]3 years ago
3 0
What do you need help with?
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10. Katie, Ralph, and Juan are tossing a football. Katie is 22.5 feet
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Step-by-step explanation:

See attached file. Brainly did not allow me to send my explanation normally. Sorry for the trouble!

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Coach Evans recorded the height, in inches of each player on his team. The results are shown.
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A recent gasoline survey said that the national average price of gasoline was $1.298 a gallon. It was felt that gasoline price i
slava [35]

Answer:

<em>alternative hypothesis : H₁ :</em>

<em>Recent  Gasoline surveys felt that gasoline price in Texas was significantly lower than the national average</em>

<em>Alternative Hypothesis : H₁: μ < $1.298 a gallon</em>

Step-by-step explanation:

<u><em>Explanation</em></u>:-

Given A recent gasoline survey said that the national average price of gasoline was $1.298 a gallon

<em>Population average μ= $1.298 a gallon</em>

<em>sample size 'n' = 37</em>

<em>Sample mean (x⁻) = $1.192 a gallon </em>

<em>Sample standard deviation 'S' = $0.0436</em>

<em>Null hypothesis :H₀ : μ =  $1.298 a gallon</em>

<em>Alternative Hypothesis : μ < $1.298 a gallon</em>

<em>Degrees of freedom : ν = n-1= 37-1=36</em>

<em>t₀.₀₂₅ = 1.688</em>

<em>Test statistic </em>

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

<em>                        </em>t = \frac{1.192-1.298 }{\frac{0.0436}{\sqrt{37} } }<em></em>

<em>                      t =  -14.8044</em>

<em>|t| = |-14.8044| > 1.688</em>

<em>Null hypothesis is rejected </em>

<em>Alternative hypothesis is accepted </em>

<em>Recent  Gasoline surveys felt that gasoline price in Texas was significantly lower than the national average</em>

6 0
3 years ago
For ΔABC, ∠A = 3x - 8, ∠B = 5x - 6, and ∠C = 4x + 2. If ΔABC undergoes a dilation by a scale factor of 1/2,
disa [49]

Answer: angle A=40, Angle B=74, Angle C=66

Step-by-step explanation:

We all know that a triangle has 180 degrees.

3x-8+5x-6+4x+2=180

12x-12=180

12x=180+12

12x=192

x=16.

∠A=2(16)+8=40

∠B= 90-16=74

∠C = 5(16) -14= 66

5 0
3 years ago
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