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3 years ago

8

A pack of gum costs 75 cents. That is 3 cents less than three times what the pack cost 20 years ago. Which equation could be use

d to find the cost of the gum 20 years ago?

2 answers:

Tamiku [17]3 years ago

7 0

75-3×3x=?
I believe that would be the equation.

babunello [35]3 years ago

7 0

75-3x3x=_______ is your equation

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I got one but someone plz help me with the rest I will give brainly to the first person to answer right.

alexdok [17]

Answer:

First figure is a hexagon

second figure is a dodecagon

third figure is a decagon

Step-by-step explanation:

We can classify each figure by how many sides it has.

the first one had 6 sides. a six sided polygon is known as a hexagon

the second one has 12 sides. a 12 sided polygon is known as a dodecagon

the third one has 10 sides. a 10 sided polygon is known as a decagon

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3 years ago

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alisha [4.7K]

Answer:

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Step-by-step explanation:

4 0

3 years ago

According to the Rational Root Theorem, which number is a potential root of f(x) = 9x8 + 9x6 – 12x + 7?

notsponge [240]

<u>Answer-</u>

$\boxed{\boxed{\frac{7}{3}}}$

<u>Solution-</u>

Rational Root Theorem-

$f(x)=a_nx^n+a_{n-1}x^{n-1}+a_{n-2}x^{n-2}+.......+a_1x+a_0\ \ \ and\ a_n\neq 0$

All the potential rational roots are,

$=\pm (\dfrac{\text{factors of}\ a_0}{\text{factors of}\ a_n})$

The given polynomial is,

$f(x) = 9x^8 + 9x^6-12x + 7$

Here,

$a_n=9,\ a_0=7\\\\\text{factors of}\ 9=1,3,9\\\\\text{factors of}\ 7=1,7$

The potential rational roots are,

$=\pm \frac{1}{1},\pm \frac{1}{3}, \pm \frac{1}{9}, \pm \frac{7}{1}, \pm \frac{7}{3}, \pm \frac{7}{9}$

$=\pm 1,\pm \frac{1}{3}, \pm \frac{1}{9}, \pm 7, \pm \frac{7}{3}, \pm \frac{7}{9}$

From, the given options only $\frac{7}{3}$ satisfies.

6 0

3 years ago

Read 2 more answers

mash [69]

The best answer I believe is C

3 0

2 years ago

A system of equations is shown below:

Naddika [18.5K]

6x - 5y = 5
3x + 5y = 4
----------------add
9x = 9
x = 9/9
x = 1 <===

5 0

3 years ago