All categories

3 years ago

Is (9, 1) a solution to the equation y = x - 8? yes or no

Mathematics

1 answer:

velikii [3]3 years ago

7 0

Answer:

yes

Step-by-step explanation:

y = 9

x = 1

1 = 9 - 8

You might be interested in

What is 1.209 • 10^7 in standard form

dolphi86 [110]

Since the exponents is positive, move the decimal 7 places to the right, thus giving you 12090000

8 0

2 years ago

Which expression is equivalent to the following?

xeze [42]

Step-by-step explanation:

$\sin^{4}x \: - \cos^{4} x = (\sin^{2}x)^{2} - (\cos^{2}x)^{2}$

$= (\sin^{2}x)^{2} - (1 - \sin^{2}x)^{2}$

$= \sin^{4}x - (1 - 2\sin^{2}x + \sin^{4}x)$

$= 2\sin^{2}x - 1$

$= - \cos2x$

Note: I used the identity

${ \sin }^{2} x = \frac{1}{2} (1 - \cos \: 2x)$

for the last step.

PS. I love proving trigonometric identities!

3 0

2 years ago

Michelle biked 21 miles in 4 hours.

Tomtit [17]

Part A: 5.25
Average speed is 5.25 mi per hr

Part B: 8 hrs because
42 divided by 5.25 is 8

8 0

2 years ago

DIRECTIONS: Use this information to answer Parts A, B, and C.

Talja [164]

Answer:

V=706.85

Step-by-step explanation:

Well, first of when you want to find the volume of the cone you need to have a radius and hieght. And the radius is half the diameter, so divide the diameter into half: 10/2=5 in. and you already have the height so just plug in the numbers.

Formula: V= $\frac{1}{3}$ $\pi$ $r^{2}$ h ---> V= $\frac{1}{3}$ $\pi$ ( $5^{2}$ )(27)

And put the plugged in formula in your calculator and you'll find the answer!

V=706.85

I hope this helped.

3 0

2 years ago

someone has asked you to find the distance between mile marker fourteen and mile marker twenty-nine while driving on an intersta

galina1969 [7]

D) Subtraction because in order to find the distance in between the marker you will need to subtract 14 from 29. So the operation will you need to find the answer is subtraction.

4 0

3 years ago