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3 years ago

If a= square a over square b=x then what stamens is true

Mathematics

1 answer:

Dahasolnce [82]3 years ago

6 0

Answer:

C I thinks

Step-by-step explanation:

If you square both sides that is what you get.

(Also can I please have Brainliest? I need it to level up!)

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A plane flying horizontally at an altitude of 1 mi and a speed of 470 mi/h passes directly over a radar station. Find the rate a

kiruha [24]

Answer:

407 mi/h

Step-by-step explanation:

Given:

Speed of plane (s) = 470 mi/h

Height of plane above radar station (h) = 1 mi

Let the distance of plane from station be 'D' at any time 't' and let 'x' be the horizontal distance traveled in time 't' by the plane.

Consider a right angled triangle representing the above scenario.

We can see that, the height 'h' remains fixed as the plane is flying horizontally.

Speed of the plane is nothing but the rate of change of horizontal distance of plane. So, $s=\frac{dx}{dt}=470\ mi/h$

Now, applying Pythagoras theorem to the triangle, we have:

$D^2=h^2+x^2\\\\D^2=1+x^2$

Differentiating with respect to time 't', we get:

$2D\frac{dD}{dt}=0+2x\frac{dx}{dt}\\\\\frac{dD}{dt}=\frac{x}{D}(s)$

Now, when the plane is 2 miles away from radar station, then D = 2 mi

Also, the horizontal distance traveled can be calculated using the value of 'D' in equation (1). This gives,

$2^2=1+x^2\\\\x^2=4-1\\\\x=\sqrt3=1.732\ mi$

Now, plug in all the given values and solve for $\frac{dD}{dt}$ . This gives,

$\frac{dD}{dt}=\frac{1.732\times 470}{2}=407.02\approx 407\ mi/h$

Therefore, the distance from the plane to the station is increasing at a rate of 407 mi/h.

6 0

4 years ago

Explain how you can use your compass to construct one-fourth the length of a segment.

kogti [31]

Answer:

You caluculate the value of the segment then multiply it by 1/4. After that you move the compass to match the radius of the segment

Step-by-step explanation:

Sorry if that didnt make sense

7 0

3 years ago

Can you guyz help me with this question step by step please ☺️

zlopas [31]

2 1/2 x 3 = 7 1/2 = 7 4/8

10 11/8
- 7 4/8
3 7/8
A is the correct answer

7 0

3 years ago

PLZ HELP ME QUICKLY! Replace the power with a product and then transform the product into a polynomial. (3a-1)^2

aniked [119]

Answer:

Product: $(3a-1)(3a-1)$

Polynomial: $9a^{2} -6a+1$

Step-by-step explanation:

$(3a-1)^{2}$ is equal to $(3a-1)(3a-1)$ . Then, expand it using the distributive property to get $9a^{2} -3a-3a+1$ which, simplified is $9a^{2} -6a+1$ .

Hope this helps :)

5 0

3 years ago

A stream is flowing down a slope into a larger river. The elevation of the head of the stream is 1,776 feet above sea level. The

ddd [48]

Answer:

-167.2 ft/mile

Step-by-step explanation:

The "rise" is 1298 -1776 = -478 ft. The run is given as 15,098 ft, so the slope is ...

slope = rise/run = -478/15098 ≈ -0.0316598

For 5280 feet in 1 mile, that rate of change amounts to ...

-0.0316598×5280 ft ≈ -167.2 ft . . . per mile

3 0

3 years ago