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3 years ago

2 27a + 10a - 3a - 2a help

1 answer:

dsp733 years ago

8 0

If you need it simplified: what you’re going to do is add 7a to 10a and you get 17a then you subtract 3a and have 14a left over so the final step is to subtract 2a and you get 12a

So after simplifying your answer is 12a

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Twellve concert tickets cost $450 what is the cost of 3 tickets to the same concert

Scrat [10]

1) $450/12=$37.50
2)$37.50x3=$112.50

The answer is: $112.50

I hope this helps

4 0

3 years ago

Write y = x2 + 24x + 144 as a square of binomial.

irina1246 [14]

Answer:

$y=(x+12)^2\\$

Step-by-step explanation:

To write a quadratic equation into binomial form we can compare the equation into the completing square form of a quadratic equation like this ,

$y=a(x-h)^2+k$

now since,

$y=x^2+24x+144$

we can equate both the equations from left hand side to right hand side like this,

$x^2+24x+144=a(x-h)^2+k\\$

now we solve,

$x^2+24x+144=a(x-h)^2+k\\x^2+24x+144=a((x)^2-2(x)(h)+(h)^2)+k\\x^2+24x+144=a(x^2-2hx+h^2)+k\\x^2+24x+144=ax^2-2ahx+ah^2+k\\$

now we compare the coefficients of x^2:

$1 = a\\$

now we compare the coefficients of x :

$24=-2ah\\24=-2(1)h\\24=-2h\\\frac{24}{-2}=h\\-12=h\\$

now we compare the constants , (constants are the letters which are not associated with any variable in this case the variable is x)

$144 = ah^2+k\\144=(1)(-12)^2+k\\144=(1)(144)+k\\144=144+k\\144-144=k\\0=k\\$

so now the value we got all the values for the completing square form we plug those in , a = 1 , h = -12 , k = 0 ,

$y=a(x-h)^2+k\\y=1(x-(-12))^2+0\\y=(x+12)^2\\$

this is the square of a binomial, if you want to verify if we expands this formula by the formula of (a + b)^2 we would get the same result. Thus this is the correct answer.

5 0

2 years ago

Numbers and expressions written in scientific notation are often used to represent measurement in a real-life situations. For ea

never [62]

1. My friend’s house is about (value) from mine
2. My bedroom is (value) sq ft
3. My fish tank holds (value)
4. I ran (value) this year!
5. The national park in my state is (value)

6 0

2 years ago

Read 2 more answers

Grant took $27.75 to the movies last friday. each ticket costs g dollars. write an expression to represent the amount of money g

Stolb23 [73]

To represent how much money Grant will have remaining after he buys 3 tickets, you would think of subtracting g, the price of one ticket 3 times. This could be represented by subtracting groups of g as well.

27.75 - g - g - g or $27.75 - 3g

6 0

3 years ago

Solve the inequality 9(x - 3) < 4(x + 10).

Delicious77 [7]

9x - 27 < 4x + 40

-> 5x < 67

-> x < 67/5

3 0

3 years ago

Read 2 more answers