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3 years ago

What is the value of x????

Mathematics

1 answer:

Arte-miy333 [17]3 years ago

4 0

Answer:

Step-by-step explanation:

${18}^{2} = {x}^{2} + {x}^{2} \\ \frac{18 \times 18}{2} = {x}^{2} \\ x = \sqrt{9 \times 18} \\ x = \sqrt{9 \times 9 \times 2} \\ x = 9 \sqrt{2}$

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4-4/9x=2/3<br> Rewrite so there no more fractions

Sergio [31]

Answer:

x=7.5

Step-by-step explanation:

4-4/9x=2/3

-4/9x=2/3-4/1

-4/9x=-12/3-2/3

-4/9x=-10/3

TIMES 3 To each side.

-4x=-30

x=7.5

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3 years ago

Christie was on a road trip. She traveled 320.95 miles on day one, 231.45 miles on day two, and 120.32 miles on day three. How m

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Christie traveled 672.72 miles on the three day road trip.

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3 years ago

Read 2 more answers

How do I evaluate <br> F(-1/4)=4x-18

Andre45 [30]

Answer:

F(-1/4)=4x-18

F(-1/4) = 4 (-1/4) - 18

F(-1/4) = -19

Step-by-step explanation:

You would have to replace the given numbers and just do the math

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3 years ago

At what x value does the function given below have a hole?<br><br> f(x)=x+3/x2−9

S_A_V [24]

Answer:

hole at x=-3

Step-by-step explanation:

The hole is the discontinuity that exists after the fraction reduces. (Still doesn't exist for original of course)

The discontinuities for this expression is when the bottom is 0. x^2-9=0 when x=3 or x=-3 since squaring either and then subtracting 9 would lead to 0.

So anyways we have (x+3)/(x^2-9)

= (x+3)/((x-3)(x+3))

Now this equals 1/(x-3) with a hole at x=-3 since the x+3 factor was "cancelled" from the denominator.

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2 years ago

Triangle PQR lies in the xy-plane, and the coordinates of vertex Q are (2, –3). Triangle PQR is rotated 180° clockwise about the

trasher [3.6K]

Answer:

(2,3)

Step-by-step explanation:

We are given that triangle PQR lies in the xy-plane, and coordinates of Q are (2,-3).

Triangle PQR is rotated 180 degrees clockwise about the origin and then reflected across the y-axis to produce triangle P'Q'R',

We have to find the coordinates of Q'.

The coordinates of Q(2,-3).

180 degree clockwise rotation about the origin then transformation rule

$(x,y)\rightarrow (-x,-y)$

The coordinates (2,-3) change into (-2,3) after 180 degree clockwise rotation about origin.

Reflect across y- axis the transformation rule

$(x,y)\rightarrow (-x,y)$

Therefore, when reflect across y- axis then the coordinates (-2,3) change into (2,3).

Hence, the coordinates of Q(2,3).

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3 years ago