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2 years ago

[Due TOMORROW] In the standard (w.y) coordinate plane, the point (3,-7)

Mathematics

2 answers:

Tomtit [17]2 years ago

6 0

(6,-9) it is 3 units away from both 3 and 9, and -9 is 2 units away from -7 and -11.

AfilCa [17]2 years ago

5 0

Answer:

(- 3, -3)

Step-by-step explanation:

<u>Use midpoint formula to find the coordinates of the other end point:</u>

(9 + x)/2 = 3 ⇒ 9 + x = 6 ⇒ x = - 3
(-11 + y)/2 = -7 ⇒ -11 + y = -14 ⇒ y = - 3

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Answer: $(13.22\%,\ 19.34\%)$

Step-by-step explanation:

Given : Sample space : n= 559

Sample proportion : $\hat{p}=\dfrac{91}{559}=0.162790697674\approx0.1628$

$=16.28\%$

Significance level : $\alpha= 1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.96$

Confidence level for population proportion:-

$\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\=0.1628\pm (1.96)\sqrt{\dfrac{0.1628(1-0.1628)}{559}}\\\\=0.1628\pm0.030604971367\\\\\approx 0.1628\pm0.0306=(0.1322,\ 0.1934)=(13.22\%,\ 19.34\%)$

Hence, 95% confidence interval for the percentage of all auto accidents that involve teenage drivers.= $(13.22\%,\ 19.34\%)$

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3 years ago

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larisa86 [58]

Answer:

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3 years ago

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luda_lava [24]

Area of the 2 end triangles plus area of the 2 rectangular sides plus the area of the bottom rectangle

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3 years ago

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djverab [1.8K]

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