3 years ago

1. which of the following is true and radio waves?

Mathematics

1 answer:

Valentin [98]3 years ago

5 0

Number one is A. Two is D and I think three is A ( I'm not entirely sure about the last one)

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On n − {1}, the relation r given by a r b iff the prime factorizations of a and b have the same number of 2's. for example, 48 r

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2 years ago

The height of the tunnel at the center is 35ft, and the vertical clearance must be 21 ft at a point of 8ft from the center. Find

Zinaida [17]

Answer:

y=-0.215x^2+35

Step by Step:

Let, $h=0$ , $k=35$ , $x=8$ , $y=21$

We know that, the general equation of the parabola.

$y-k = a(x-h)^2$

$\Rightarrow y=a(x-h)^2+k .........(i)$

Substitute the value of $h, k, x, y$ in equation $(i)$ and find the value of $a.$

$21=a(8-0)^2+35$

$\Rightarrow 21=a\times 8^2+35$

$\Rightarrow 21=64a+35$

$\Rightarrow 64a=21-35$

$\Rightarrow 64a=-14$

$\Rightarrow a=\frac{-14}{65}$

$\Rightarrow a=-0.215$

Hence, the equation of the parabola is:

$y=-0.215x^2+35$

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2 years ago

The opposite corners of a quadrilateral are right angles. The quadrilateral is not a rhombus. What kind of quadrilateral is the

jolli1 [7]

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3 years ago

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A construction company plans to invest in a building project. There is a 25% chance that the company will lose $40,000, a 35% ch

strojnjashka [21]

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

<span>C) The expected value is - $2,000, so the company should not proceed with the project.</span>

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2 years ago

Please help with the proportions word problem!!

andre [41]

Answer:

30%

Step-by-step explanation:

the percent of 24 of 80 is 30% so they rasid the price 30% percent of 80

6th grader here sorry if wrong

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