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3 years ago

What is 1/4(8-6x+12) simplfied

1 answer:

7 0

$\frac{1}{4} (8 - 6x + 12) \\ \\ \frac{1}{4} (-6x + 20) \\ \\ \frac{-6x + 20}{4} \\ \\$

The final result is: -6x + 20/4.

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I need help on this question, It's for Algebra 1 Simplify the following expression. (7x2 + 4x - 7) + (4x2 - 6x + 4)

Drupady [299]

You can only add like terms

exg
you can addd
2+4
2x+4x
2x^2+4x^2
2x^3+4x^3

but not
2+4x
2x^2+2x^3

so when adding like terms keep the exponent
4x+2x=6x
4x^3+2x^3=6x^3

(7x^2+4x-7)+(4x^2-6x+4)
get rid of the parenthasees
7x^2+4x-7+4x^2-6x+4
group like terms (x^2 with x^2 x with x, etc)

(7x^2+4x^2)+(4x-6x)+(-7+4)
add like terms
11x^2-2x-3

8 0

3 years ago

A gold coin appreciated in value from $200.00 to $475.00 in 6 years. Find the yearly rate of appreciation. Show or explain all w

Travka [436]

Answer:

16%

Step-by-step explanation:

To solve this we are using the standard growth equation:

$y=a(1+b)^x$

Were

$y$ is the final value after $x$ years

$a$ is the initial value

$b$ is the growth factor (yearly rate of appreciation in our case) in decimal form

$x$ is the time in years

We know from our problem that gold coin appreciated in value from $200.00 to $475.00 in 6 years, so $y=475$ , $a=200$ , and $x=6$ .

Let's replace the values in our equation and solve for $b$ :

$y=a(1+b)^x$

$475=200(1+b)^6$

$\frac{475}{200} =(1+b)^6$

$2.375=(1+b)^6$

$\sqrt[6]{2.375} =\sqrt[6]{(1+b)^6}$

$1+b=\sqrt[6]{2.375}$

$b=\sqrt[6]{2.375}-1$

$b=0.155$

which rounds to

$b=0.16$

Since our appreciation rate is in decimal form, we need to multiply it by 100% to express it as percentage:

0.16*100% = 16%

We can conclude that the yearly appreciation rate of our gold coin is approximately 16%

3 0

3 years ago

Plz HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Alisiya [41]

$\boxed{ \boxed{\huge{ \mathrm{ \underline{ Answer } ✓ }}}}$

<u>Figure - 1</u> :

Let the missing side as " n "

$\mathrm{ \triangle DEF \sim \triangle DRQ}$

Therefore the sides will be proportional,

$\dfrac{n}{9} = \dfrac{4}{12}$

$n = \dfrac{1}{3} \times 9$

$n = 3 \: \: units$

_____________________________

<u>Figure - 2</u> :

Let the missing side as " m "

The Triangles are similar, therefore their sides will be proportional.

$\dfrac{m}{8} = \dfrac{9}{6}$

$m = \dfrac{3}{2} \times 8$

$m = 3 \times 4$

$m = 12 \: \: units$

_____________________________

$\mathrm{ ☠ \: TeeNForeveR \: ☠}$

3 0

3 years ago

Read 2 more answers

Determine the sum: 21.6 x 10^4 + 5.2 x 10^7. Write your answer in scientific notation.

lana [24]

Answer:

It's D

Step-by-step explanation:

Hope this helps :))

6 0

3 years ago

A slice of pizza costs $1.57. How much will 27 slices cost?

elena-s [515]

It will be cost $ 42.39 for 27 slices of pizza

<h3>Further Explanation</h3>

A slice of pizza = $1.57

27 slices of pizza = the number of pizza x price/slice

= 27 x 1.57

We are going to use standard algorithm to solve this multiplication

1.57 ⇒ 2 decimal places

<u> 27</u> x ⇒ 0 decimal place

1099

<u> 314 </u>+

42.39 ⇒ 2 decimal places

In decimal number multiplication, the process is the same with the whole number multiplication. Only always remember when to put the decimal point in the answer.

<h3>Learn more</h3>

Total spend brainly.com/question/12203917

Decimal multiplication brainly.com/question/2308946

Decimal multiplication brainly.com/question/1254534

Keywords: multiplication, decimal multiplication, two digits number additional, additional, area, measurement

3 0

3 years ago

Read 2 more answers