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3 years ago

Can someone answer this question and make sure they show working out. Will reward brainliest to the best answer.

Mathematics

1 answer:

wolverine [178]3 years ago

3 0

Answer:

8a²+8a+12b = 8a²+8a+12b

Step-by-step explanation:

first, expand the brackets

4a + 4a + 12a² + 8b + 4b - 4a²

then, collect like terms

8a + 8a² + 12b

then, rearrange

8a² + 8a + 12b

You might be interested in

Given f (x) = -3x - 1, solve for x when f (x) = -4

Aleks [24]

Answer:
11
Explanation:
f(x) = -3x - 1 when f(x) = -4
f(x) = -4 * -3 -1 = 12 - 1 = 11

8 0

3 years ago

(2)+(-13)= whats the answer?

ziro4ka [17]

Answer:

$- 11$

Step-by-step explanation:

$2 + ( - 13) \\ 2 - 13 = - 11$

5 0

3 years ago

What is 25.691 rounded to the greatest place

kvv77 [185]

The greatest place value is the tens spot which 2 is in the tens spot so we need to round up since 5 is next to the 2. The answer would be 30

4 0

2 years ago

HELP!!!! if you answer you get 20 points.

wolverine [178]

Answer:

Very last choice is the answer.

Step-by-step explanation:

Remark

The thing that is most important is that the horizontal line connect h and the radius is parallel to the cut of the sphere if it was placed right in the middle. That line swings around as though the center was a pivot.

Solution

So what you have is a circle when that line goes around that part of the sphere.
To find the length of that line, use the Pythagorean Theorem. Call the line r1.
r1 ^2 = r^2 - h^2
So the area is pi * r1^2
Area = pi (r^2 - h^2)
The very last one is the answer.

8 0

3 years ago

Uninhibited growth can be modeled by exponential functions other than A(t) =Upper A 0 e Superscript kt. For example, if an i

laila [671]

The question is incomplete. Here is the complete question.

Uninhibited growth can be modeled by exponential functions other than $A(t)=A_{0}e^{kt}$ . for example, if an initial population P₀ requires n units of time to triple, then the function $P(t)=P_{0}(3)^{\frac{t}{n} }$ models the size of the population at time t. An insect population grows exponentially. Complete the parts a through d below.

a) If the population triples in 30 days, and 50 insects are present initially, write an exponential function of the form $P(t)=P_{0}(3)^{\frac{t}{n} }$ that models the population.

b) What will the population be in 47 days?

c) When wil the population reach 750?

d) Express the model from part (a) in the form $A(t)=A_{0}e^{kt}$ .

Answer: a) $P(t)=50(3)^{\frac{t}{30} }$