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3 years ago

5

Simplify the equation by combining

2 answers:

creativ13 [48]3 years ago

4 0

The answer would be 3x + 3.

Setler79 [48]3 years ago

3 0

Answer:

3x+3

Step-by-step explanation

Like terms are terms that contain the same variables raised to the same power. As such in your equation you would combine the <em>4x</em> and the <em>-x</em> because they contain the same variable (x). To combine these terms you simply add <em>4x + - x</em>, which can be written as <em>4x - x</em>. The product of this is <em>3x. </em>Because there is a <em>3</em> on its own with no other like terms to add to it the it, the simplified version of this equation would be <em>3x+3</em>.

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12.50x = 15 What is the value of x? What is the percent increase?

kolezko [41]

Answer:

x = 1.2

Step-by-step explanation:

12.50x = 15

12.50/12.50 x = 15/12.50

x = 1.2

(Sorry i dont understand what you mean by percent increase)

5 0

3 years ago

Wildlife sanctuary has 38 species of birds.

lbvjy [14]

Firstly, solve 38C15.

Then solve 42C12.

Compare your answers.

The goal here is to see if 38C15 = 42C12.

Here is the formula:

nCr = n!/(r!(n - r)!

Go for it.

3 0

3 years ago

A and b are natural numbers. The diameter of cell a is 2.3 , and the diameter of cell b is 2.3 .

Pani-rosa [81]

After clarification we see the respective diameters are

$A = 2.3 \times 10^{-a}$

$B = 2.3 \times 10^{-b}$

We're asked about the ratio

$A:B = 2.3 \times 10^{-a} : 2.3 \times 10^{-b} = 10^{-a} : 10^{-b} = 10^b : 10^a = 10^{b-a} : 1$

Now we can go through the choices.

A. If a = 4 and b = 6, then cell a is 100 times greater than cell b.

$A:B=10^{6-4}:1 = 100:1$

It would be more proper to say the diameter of cell A is 100 times the diameter of cell B, but yes, this is TRUE.

B. If a = 4 and b = 6, then cell b is 100 times greater than cell a.

FALSE. 10 to the minus 4 is 100 times bigger than 10 to the minus 6, so a is bigger.

C. If a = 4 and b = 6, then cell a is 2 times greater than cell b.

FALSE. We already calculated its 100 times bigger.

D. If a = 4 and b = 6, then cell b is 2 times greater than cell a.

FALSE.

8 0

3 years ago

Read 2 more answers

What is the solution of x + <img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B5%7D" id="TexFormula1" title="\frac{1}{5}" alt="\

givi [52]

Your answer would be A.1

6 0

2 years ago

Read 2 more answers

How do u divide fractions

Lelu [443]

Keep, change, flip

Example: 3/4 divided by 6/8

Step 1: keep 3/4

Step two: change the division sign to a multiplication sign

Step 3: flip 6/8 and make it 8/6

Step 4: multiply it, then that’s your answer to the division problem

8 0

3 years ago