Katie says when n=3 the answer to 4n2=144jack says when n=3 the answer to 4n2=36who is correct and why?

Answers

Answer 1

Answer:

JACK IS CORRECT.

4n²= 36 when n=3, not 144.

It is because you have to power up first, then you should multiply. But Katie did the opposite, so she was wrong.

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I need help with math 1) Find the LCD of these fraction 6/2a and 1/5 a. 5a2 b.5a c.a2+5 d.a+5 2) Find the LCD of these fraction a.25xy2 b.50xy2 c.25x4y3 d.50x4y3 3) Find the LCD of these fraction 14/x2y and 7/xy2 a.xy b.xy2 c.x2y d.x2y2

Determine the value of A1 withreason/s

Answers

Answer:A1 = a If A1 represents a variable in an equation, we need the equation and any additional information to solve for its value. Once we have the equation and any given values, we can substitute those values into the equation and solve for A1. Without more context or information, it is not possible to determine the value of A1. If you can provide the equation or any additional details, I will be able to help you further in determining the value of A1.

Step-by-step explanation:

What is the product?2a-7 over a times 3a^2 over 2a^2-11a+14
a) 3 over a -2
b) 3a over a-2
c) 3a over a+2
d) 3 over a+2

Answers

Answer:

The correct option is b.

Step-by-step explanation:

We have to find the product of $(2a-7)/(a)$ and $(3a^2)/(2a^2-11a+14)$ .

Multiply both terms.

$(2a-7)/(a)* (3a^2)/(2a^2-11a+14)$

Cancel out the common factor a from numerator and denominator.

$(2a-7)/(1)* (3a)/(2a^2-7a-4a+14)$

$(2a-7)/(1)* (3a)/(a(2a-7)-2(2a-7))$

$(2a-7)/(1)* (3a)/((2a-7)(a-2))$

Cancel out the common factor (2a-7) from numerator and denominator.

$(1)/(1)* (3a)/(a-2)$

$(3a)/(a-2)$

Therefore, the correct option is b.

this question involves factoring and multiplying equations so just follow along my procedures in the image

Translate the verbal phrase into an inequality. All real numbers that are greater than or equal to -1.5 and less than 9.2

Answers

Answer: -1.5 ≤ x < 9.2

Step-by-step explanation:

Hi, to answer this question we have to analyze the information given:

"All real numbers": we will use the variable x to represent all the real numbers.

"All real numbers that are greater than or equal to -1.5". This means that x is greater or equal (≤) to the number 1.5.

"And less than 9.2": less is represented with the symbol <

Mathematically speaking:

-1.5 ≤ x < 9.2

Feel free to ask for more if needed or if you did not understand something.

4 is because it is greater and less than

What is the measure ofA
30°
C

Answers

Answer:

120°

Step-by-step explanation:

Devon has 14 steel balls of equal weight. If he puts 8 of them in one pan of a balance, and the rest along with a weight of 20 grams in the other pan, the pans balance each other. Which equation can be used to find the weight of each steel ball?

Answers

Let n be a number of balls: n = 14

In one pan you have 8 balls: 8n
In the other pan you have the rest of balls (14 - 8 = 6) along with a weight of 20 grams = 6n + 20
So the pans are balanced:
8n = 6n + 20

Now, just solve the equation:
8n - 6n = 20
2n = 20
n = 20/2
n = 10
So, you know that a ball weights 10 grams.

Answer:

Let x represent the weight of one steel ball. One side will have 8 balls or 8x and the other side will have 14-8 or 6 balls (6x) and the 20 gram weight. 8x = 6x + 20.

Find any real solutions for the following equations

x3 = - 64

Answers

Hello,

x^3+64=0
==>(x+4)(x²-4x+16)=0
==>x=-4 because x²-4x+16 is not factorable in R.

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