3 years ago

Is -9/4 rational or irrational

Mathematics

1 answer:

irga5000 [103]3 years ago

7 0

Answer:

irrational this is because when you divide - 9 / 4 gives you an irrational answer

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What are the focus and directrix of the parabola with the equation y=1/16x^2

Vlada [557]

Y=1/16x^2
multiplying both sides by 16 we get:
16y=x^2
The general form of a parabola is:
(x-h)^2=4p(y-k)
thus
4p=16
p=4
The parabola opens upwrd:
Focus: (h,k-p)
(0,0-4)
=(0,-4)
Directrix: y=-4

8 0

3 years ago

Line p contains point (6, -5) and is perpendicular to line q. The equation for line q is y = 3x + 5. 1) Write an equation for li

wel

Answer:

$y = -\frac{1}{3}x -3$

Step-by-step explanation:

Perpendicular lines have negative reciprocal slopes. To find the line, convert the slope of q and substitute it with (6, -5) into point slope form.

y = 3x + 5 is q. It has a slope of 3. So p will have a slope of -1/3.

$y - y_1 = m(x-x_1)\\y - -5 = -\frac{1}{3}(x - 6)\\y + 5 = -\frac{1}{3}x + 2\\y = -\frac{1}{3}x -3$

4 0

3 years ago

P-6= -5 can u slove this equation plx

torisob [31]

So u have to solve for p to do that you must isolate p by moving -6 after the equal sign -5+6=1 and there is the answer: 1 hope this helps!!

5 0

3 years ago

Evaluate 3x-2y; if x=7 and y=3

Zarrin [17]

Answer:

Step-by-step explanation:

3x - 2y = ?

3(7) - 2(3) = ?

21 - 6 = ?

= 15

All you have to do is substitute the given values & follow the order of operations! Best of luck.

3 0

3 years ago

Write the expression 53.7124 x 10^{3} as a single number

mars1129 [50]

Answer:

53712.4

Explanation:

$\sf\rightarrow 53.7124\:x\:10^3$

10³ = 1000

$\sf\rightarrow 53.7124\:x\:1000$

$\sf\rightarrow 53712.4$

6 0

2 years ago

Read 2 more answers