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kolbaska11 [484]

3 years ago

6

A culture of bacteria doubles every hour. If there are 500 bacteria at the beginning, how many bacteria will there be after 24 h

ours?

1 answer:

Mama L [17]3 years ago

3 0

<span>8388608000. you will have to keep multiplying 2 24 times.</span>

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H+4.78=8.02 evaluate

asambeis [7]

Answer:

h=3.24

Step-by-step explanation:

6 0

3 years ago

A random sample of 40 students from each grade level was surveyed regarding their preference for a class trip. If there are 220

NNADVOKAT [17]

Answer:

66 students prefer the zoo

Step-by-step explanation:

I got it correct :)

3 0

3 years ago

Help question attached multiple choice

Rina8888 [55]

ANSWER

$x = \frac{\pi}{2} , \frac{7\pi}{6} , \frac{3\pi}{2} , \frac{11\pi}{6}$

EXPLANATION

The given trigonometric equation is

$\cos(x) + 2 \cos(x) \sin(x) = 0$

We factor cos(x) to get:

$\cos(x) (1 + 2 \sin(x) ) = 0$

Apply the zero product property to obtain:

$\cos(x) = 0 \: or \: 1 + 2 \sin(x) = 0$

$\cos(x) = 0 \: or \: \sin(x) = - \frac{1}{2}$

Using the unit circle,

$\cos(x) = 0$

when

$x = \frac{\pi}{2}$

and

$x = \frac{3\pi}{2}$

We know

$\sin(y) = \frac{1}{2}$

when

$y= \frac{\pi}{6}$

The sine function is negative in the third and fourth quadrants.

$x = \pi + \frac{\pi}{6} = \frac{7\pi}{6}$

$x = 2\pi - \frac{\pi}{6} = \frac{11\pi}{6}$

Hence the solutions are:

$x = \frac{\pi}{2} , \frac{7\pi}{6} , \frac{3\pi}{2} , \frac{11\pi}{6}$

6 0

3 years ago

6. The value of the polynomial<br>x2 -x -1 at x = -1 is *

Licemer1 [7]

Answer:

-2

Step-by-step explanation:

Replace x with -1

(-1)2 - (-1) - 1

-2 + 1 - 1

-2

7 0

3 years ago

Multiply find the partial products (what goes in the question mark?)<br><br> 6.4<br> x 7.8<br> 0. ??

tester [92]

Answer:

For the problem 35 x 7, the partial products would be: 7 x 30 and 7 x 5.

Step-by-step explanation:

3 0

3 years ago