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3 years ago

H (x)=(-4x -5)(-x +5)

Mathematics

1 answer:

lorasvet [3.4K]3 years ago

4 0

Answer:

I hope it will help you :)

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In triangle ABC, A is a right angle and M B=45°. Find BC. If you answer is not an integer, leave it in simplest radical form.

Nataly_w [17]

Step-by-step explanation:

- In a right triangle, if ∠B is 45°, then ∠C is too.

-- Since ∠B and ∠C are equal, the sides opposite them

are equal too. This is an isosceles right triangle. Its legs

are equal.

-- (The hypotenuse)² = (one leg)² + (the other leg)²

= (12-ft)² + (12-ft)²

= (144 x 2)

The hypotenuse = √(144 x 2) = 12√2 .

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3 years ago

Please help i wanna make my parents proud !!!!!!

algol13

Why is school so hard

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3 years ago

The lengths of nails produced in a factory are normally distributed with a mean of 3.34 centimeters and a standard deviation of

Shtirlitz [24]

Answer:

3.47 and 3.21

Step-by-step explanation:

Let us assume the nails length be X

$X \sim N(3.34,0.07^2)$

Value let separated the top 3% is T and for bottom it would be B

$P(X < T)= 0.97$

Now converting, we get

$P(Z < \frac{T-3.34}{0.07})= 0.97$

Based on the normal standard tables, we get

$P(Z < 1.881)= 0.97$

Now compare these two above equations

$\frac{T-3.34}{0.07} = 1.881 \\\\ T = 1.881 \times 0.07 + 3.34 \\\\ = 3.47$

So for top 3% it is 3.47

Now for bottom we applied the same method as shown above

$P(Z < \frac{B-3.34}{0.07})= 0.03$

Based on the normal standard tables, we get

$P(Z < -1.881)= 0.03$

Now compare these two above equations

$\frac{B-3.34}{0.07} = -1.881$

$= -1.881 \times 0.07 + 3.34 \\\\ = 3.21$

hence, for bottom it would be 3.21

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3 years ago

Brainliest need help

erastova [34]

Answer:

$p(71 < \times < 85) \\ = p( \frac{71 - 78}{4} < z < \frac{85 - 78}{4} ) \\ = p( - 1.75 < z < 1.75) \\ =1 - (\phi(1.75)) \\ = 0.46 \times 100\%\\ = 46\%$

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3 years ago

In the figure, what is m∠ABE? What is m∠DBE?

Dafna11 [192]

Answer:

abe= 115.5 dbe= 25.5

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers