2 years ago

Expand and Simplify 10a-(3a+7)

Mathematics

1 answer:

yuradex [85]2 years ago

3 0

The answer would be 7(a - 1)

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puteri [66]

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Answer:

Step-by-step explanation:

Angles A and C are vertical angles; angles B and C are alternate interior angles. Only line 3 of the proof is in error.

The applicable description is found in choice B.

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2 years ago

Of all the yoga students in a particular area, 20% study with Patrick and 80% study with Carl. We also know that 8% of the yoga

Doss [256]

$P = \text{study with Patrick}$
$C = \text{study with Carl}$
$F = \text{female}$

$\mathbb P(F\mid C)=\dfrac{\mathbb P(F\cap C)}{\mathbb P(C)}=\dfrac{0.66}{0.80}=0.825\approx0.83$

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3 years ago

One variable examined is the survival rate 10 years after tagging. The scientists observed that 10 of the 50 metal tagged pengui

Oksana_A [137]

Answer: 90% confidence interval would be $(-0.2483,-0.0717)$

Step-by-step explanation:

Since we have given that

n₁ = 50

Number of metal tagged penguins survived = 10

So, $p_m=\dfrac{10}{50}=0.2$

n₂ = 50

Number of electronic tagged penguins = 18

So, $p_e=\dfrac{18}{50}=0.36$

So, at 90% confidence interval, z = 1.28

So, interval would be

$(p_m-p_e)\pm z\sqrt{\dfrac{p_m(1-p_m)}{n}+\dfrac{p_e(1-p_e)}{n}}\\\\=(0.2-0.36)\pm 1.28\sqrt{\dfrac{0.2\times 0.8}{50}+\dfrac{0.36\times 0.64}{50}}\\\\=-0.16\pm 0.0883\\\\=(-0.16-0.0883,-0.16+0.0883)\\\\=(-0.2483,-0.0717)$

Hence, 90% confidence interval would be

$(-0.2483,-0.0717)$

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3 years ago

Someone help pls:)))))))))

timama [110]

The side b = 136 as I think it’s the two equal sides

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2 years ago

How many circuits are in the graph? Is it 4? That's what I got

ankoles [38]

Answer:

is it electrical circuit? or something else

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3 years ago