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3 years ago

Question 6 (5 points)

Mathematics

1 answer:

andrew-mc [135]3 years ago

8 0

Answer:

2/3

Step-by-step explanation:

if max runs 2 hours she will have 3 because 1 hour 30 times 2 is 3 hours

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Which equation is the inverse of y = 16x2 + 1?

Llana [10]

Answer:

$y=\frac{\sqrt{x-1} }{4}$

Step-by-step explanation:

The given equation is

$y=16x^2+1$

For this function to have an inverse, we must restrict the domain, say $x\ge0$

We interchange x and y to get,

$x=16y^2+1$

We now make y the subject to get;

$x-1=16y^2$

We divide through by 16 to get;

$\frac{x-1}{16}=y^2$

We now take the square root of both sides to get;

$\pm \sqrt{\frac{x-1}{16}}=y$

$y=\pm \frac{\sqrt{x-1} }{4}$

Since $x\ge 0$ , the inverse function is

$y=\frac{\sqrt{x-1} }{4}$

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4 years ago

Find sin θ if θ is in Quadrant III and tan θ = . 0.958

Leokris [45]

Use the following identities:
$sec^2 = 1 + tan^2 \\ \\ sec = \frac{1}{cos} \\ \\ sin^2 = 1 - cos^2$
Also because the angle is in quadrant 3, sin must be negative.
Therefore
$sin = - \sqrt{1 - \frac{1}{1 + tan^2}}$
Subbing in tan = 0.958
$sin \theta = -0.69178$

7 0

3 years ago

0.75y-1.5y+0.5=5 I need answers to this asap

Mnenie [13.5K]

Answer:

y = -6

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

0.75y−1.5y+0.5=5

0.75y+−1.5y+0.5=5

(0.75y+−1.5y)+(0.5)=5(Combine Like Terms)

−0.75y+0.5=5

Step 2: Subtract 0.5 from both sides.

−0.75y+0.5−0.5=5−0.5

−0.75y=4.5

Step 3: Divide both sides by -0.75.

Hope this helps!

-Josh

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2 years ago

He buys a jewel for $180, then sells it for $216. Find his percentage profit.

yan [13]

Answer:20%

Step-by-step explanation:216-180=36. 36/180=.20

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3 years ago

Find the area of a trapezium ABCD in which AB || CD, AB = 14 cm, CD = 8 cm. Given

adoni [48]

Answer:

Did you know Grapes light on fire in the microwave..

Step-by-step explanation:

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3 years ago