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3 years ago

Solve for x if 2(5x + 2)^2 = 48

Mathematics

2 answers:

Artyom0805 [142]3 years ago

6 0

Answer:

Step-by-step explanation:

First divide both sides by 2

then apply (a+b)^2 = a^2+b^2+2ab formula

solve quadratic equation

then apply discriminant formula

Hope you get it dear ☺️

blagie [28]3 years ago

6 0

C is correct I’ve done this one before

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Yuliya22 [10]

Answer: I need help with this problem toooo. Does anyone know how to do it?

Step-by-step explanation:

6 0

3 years ago

Please help! will give brainlist

LuckyWell [14K]

The answer would have to be D

5 0

3 years ago

Simplify the expression 3x(x – 12x) + 3x2 – 2(x – 2)2. Which statements are true about the process and simplified product? Check

kirill115 [55]

Given: The algebraic expression 3x(x – 12x) + 3x² – 2(x – 2)² --------(i)

To prove: The final simplified product = –28x² +8x – 8.

Solution:

Step No. 1

First, we shall expand the term (x – 2)² by using Identity (a-b)²= a² + b² - 2ab

So, (x – 2)² = x² + 4 - 4x

From given expression (i)

3x(x – 12x) + 3x² – 2(x² + 4 - 4x) --------(ii)

Step No. 2

Now, we shall multiply by the terms within the parentheses in (ii)

(3x² – 36x²) + 3x² – (2x² + 8 - 8x) --------(iii)

Step No. 3

Now, we shall simplify the terms within the parentheses in (iii)

(– 33x²) + 3x² – (2x² + 8 - 8x) --------(iv)

Step No. 4

Now, we shall open the parentheses to eliminate parentheses in (iv)

– 33x² + 3x² – 2x² - 8 + 8x --------(v)

Step No. 5

Now, we shall add and subtract the like terms in (v)

– 28x² + 8x -8 --------(vi)

Hence, the simplified expression will be – 28x² + 8x -8

8 0

3 years ago

Read 2 more answers

Last year, Pattersonville had a population of 40,500 people . The census indicated that the population of the town has been decr

AleksandrR [38]

Answer:

34175 people will live in Pattersonville 8 years from now

Step-by-step explanation:

Initial population of Pattersonville =40,500

We are given that The census indicated that the population of the town has been decreasing by 2.1% per year .

Now we are supposed to find If this trend continues , approximately how many people will live in Pattersonville 8 years from now

Formula : $N(t)=N_0(1-r)^t$

Where N(t)= Population after t years

$N_0$ = Initial population

r = rate of decrease = 2.1 %=0.021

t = 8 years

Substitute the values in the formula :

So, $N(8)=40500(1-0.021)^8$

N(8)=34175.63223

So, 34175 people will live in Pattersonville 8 years from now

7 0

3 years ago

PLEASE HELPPPPP!!!!!!!!!!!!!!! SHOW WORK

larisa [96]

Answer:

17. A. 180 in²
18. B. 234 in²

Step-by-step explanation:

#17

<u>Total surface area is:</u>

A = 8(3*2 + 6*2) + 2(3*6) = 180 in²

Correct option is A

#18

<u>Total surface area is:</u>

A = 2(9*9) + 4(2*9) = 234 in²

Correct option is B

5 0

3 years ago