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3 years ago

What are the next two numbers in this pattern?

1 answer:

3 0

The answer is A. 243, -729

The pattern of this is that they multiply each number by -3.

3*-3=-9
-9*-3=26
27*-3=-81

So you have to multiply -81 by -3. Then multiply that by -3 to get the second number

-81*-3=243
243*-3=-729

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The number of gnats G(x), in millions, in a certain area depends on the May rainfall x, in inches. That relationship can be expr

puteri [66]

Answer:

9 inches of rainfall produces the maximum number of gnats.

Step-by-step explanation:

Given : $G(x) = - x^2 + 18x$

To Find :How many inches of rainfall produces the maximum number of gnats?

Solution:

$G(x) = - x^2 + 18x$

G(x) =The number of gnats in millions.

x denotes the length of rainfall

To Find the maximum length find the mid point of zeroes .Since parabolas are symmetrical, the x value of the max falls 1/2 way between the zeros.

$0= - x^2 + 18x$

$0= x^2-18x$

$0= x(x-18)$

So, x = 0 , x= 18

Now Formula of midpoint : $x=\frac{x_1+x_2}{2}$

$x=\frac{0+18}{2}$

$x=9$

Hence 9 inches of rainfall produces the maximum number of gnats.

8 0

3 years ago

Duueee Tommorow Hellppp plzzz

shtirl [24]

Answer:

Step-by-step explanation:

3 *6= 18

or 18/100

or 9/50

7 0

3 years ago

Ellen must take 4 courses this semester. She has a list of 3 math courses and 4 science courses to from which to choose. (a) Ini

prisoha [69]

Answer:

So the number of total combinations is 35.

Step-by-step explanation:

We know that Ellen must take 4 courses this semester. She has a list of 3 math courses and 4 science courses.

Therefore, she have total 7 courses.

So, we calculate the number of combinations to choose 4 out of 7 courses.

We get:

$C_4^7=\frac{7!}{4!(7-4)!}=35\\$

So the number of total combinations is 35.

7 0

4 years ago

6–[(−3)+(−7)]–[(−1)–(−5)–(−8)]

timama [110]

Answer:

Step-by-step explanation:

Here's all the steps, let's just remove all this confusing garbage with the adding negatives first.

6-(-3-7)-(-1+5+8)

Remember, subtracting a negative makes it positive.

6-(-10)-(12)

6+10-12

16-12

8 0

4 years ago

Helpppppp me please

motikmotik

I believe it’s 100 hopefully it helps

6 0

4 years ago