MATHEMATICS MIDDLE SCHOOL

What value of x makes the equation true? 20 + 4(3x − 5) + 2x = 28
giving brainiest

Answers

Answer 1
Answer: 20+4(3x-5)+2x=28

We move all terms to the left:

20+4(3x-5)+2x-(28)=0

We add all the numbers together, and all the variables

2x+4(3x-5)-8=0

We multiply parentheses

2x+12x-20-8=0

We add all the numbers together, and all the variables

14x-28=0

We move all terms containing x to the left, all other terms to the right

14x=28

x=28/14

x=2
Answer 2
Answer: The answer is
20+4(3•2-5)+2•2=28

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Which is the inverse of the function f(x) = x2 − 4?


y = x2 − 4

Answers

Answer:

The inverse of f(x) is

y = x² - 4

x = y ² - 4

y² = x + 4

y = √x + 4

The inverse of the function is y = √x +4

Hope this helps.

Let s be an integer. Alonso claims that -s must always be less than 0. IIiana claims that -s is only sometimes less than 0. Whose statement is correct? Help please.

Answers

Iliana is correct since an integer means a whole number that is not a fraction, which includes negative AND positive numbers. If s=4 than -s is negative (-4) But if we plug in a negative integer, like -5, the negative signs are eliminated and it becomes positive, therefore Alonso is wrong (-s=-(-5)=5) If the question was about a natural number Alonso would have been right since natural numbers are only from 0 and above

Shen is going to rent a truck For one day. There are two companies he can choose from, and they have the following prices.Company a charges $110 and allows unlimited mileage.
Company B has an initial fee of $65 in charges an additional $0.90 for every mile driven.
For what mileages Will company a charge less than Company B

Answers

Answer:

The mileages for which company A charge less than company B when , y > 50 .

Step-by-step explanation:

Given as :

The two truck companies have following prices

Company A

The initial fee = i = $110

And unlimited mileage

Company B

The initial fee = I = $65

Additional charge = $0.90 per mile driven

Let it driven x mile

Let The mileages for which company A charge less than company B = y

Now, According to question

Charges of company A = charges of company B

i.e i = I + 0.90 × x

Or, $110 = $65 + 0.90 × x

Or, $110 - $65 = 0.90 × x

Or, $45 = 0.90 × x

∴    x = (45)/(0.90)

i.e  x = 50

i.e  Company B driven x = 50 miles

So, The mileages for which company A charge less than company B = y

And y > x

i.e y > 50

Hence, The mileages for which company A charge less than company B when , y > 50 . Answer

Which square root would be classified as rational √2, √16. √24, √40 which one of these numbers' square root be rational

Answers

Square root of 16 would be the only rational number since it is the only whole number.  

Describe the translation. y=(x+3)2+4 → y=(x+1)2+6

Answers

Answer:

Shift +2 units to the right and +2 units up

Step-by-step explanation:

y = (x+3)² + 4 has a horizontal shift of -3 and a vertical shift of +4.

y = (x+1)² + 6 has a horizontal shift of -1 and a vertical shift of +6.

So do translate the first equation to the second, shift +2 units to the right and +2 units up.

What is the cost of 4 pounds of butter if 2 kilograms cost $3.20

Answers


In this modern space age in which we live, we'll need to be careful.

2 kilograms weighs 4.409 pounds on Earth.  If that much
costs $3.20, then the cost for 4 pounds is

                                                     (4 / 4.09) x (3.20) = $2.90 .

But what if you grow up to live or work on the Moon ?

2 kilograms weighs only 0.73 pounds on the Moon.  If that much
costs $3.20, then the cost for 4 pounds up there is

                                                               (4 / 0.73) x (3.20) = $17.54 .

The thing to remember is that if you make frequent trips between
the Earth and the Moon, make sure you buy stuff by mass, not by
weight.  The weight changes when you take it somewhere else,
and you don't want to get cheated.
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