Ask question

Ask question

All categories

3 years ago

9

the ramirez family comes home from vacation to find their mailbox overflowing with mail. there are 6 more magazines than there a

re letters. there are twice as many bills as letters. there are 1/3 as many bills as pieces of junk mail. there are 18 pieces of junk mail. how many magazines are there?

1 answer:

nirvana33 [79]3 years ago

4 0

Answer:

9 magazines

Step-by-step explanation:

To solve this problem you will want to work backwards. Start with the junk mail. There is 18 junk mail and if there are 1/3 as many bills as junk mail then you will need to multiply 18 * 1/3. This equals 6 bills. If there is twice as many bills as letters then you will need to divide bills(6) by 2 which equals 3. If there are 6 more magazines than letters then you need to add 6 to the letters (3). 3 + 6 = 9

You might be interested in

Consider the graph of the quadratic function y=3x↑2↓-3x-6.what are the solutions of the quadratic equation 0=3x↑2↓-3x-6

Shkiper50 [21]

X = 2 or -1

factors to 3(x-2)(x+1)=0

7 0

3 years ago

In a triangle ABC, measure of angle B is 90 degrees. AB is 3x-2 units and BC is x+3. If the area of the triangle is 17 sq cm, fo

Scorpion4ik [409]

Answer:

$x=\frac{8}{3}\ cm$

Step-by-step explanation:

we know that

The area of the right triangle ABC is equal to

$A=\frac{1}{2}(AB)(BC)$

we have

$A=17\ cm^2$

$AB=(3x-2)\ cm$

$BC=(x+3)\ cm$

substitute the values

$17=\frac{1}{2}(3x-2)(x+3)$

$34=(3x-2)(x+3)$

$34=3x^2+9x-2x-6$

$3x^2+7x-6-34=0$

$3x^2+7x-40=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$3x^2+7x-40=0$

so

$a=3\\b=7\\c=-40$

substitute in the formula

$x=\frac{-7(+/-)\sqrt{7^{2}-4(3)(-40)}} {2(3)}$

$x=\frac{-7(+/-)\sqrt{529}} {6}$

$x=\frac{-7(+/-)23} {6}$

$x=\frac{-7(+)23} {6}=\frac{16}{6}=\frac{8}{3}$

$x=\frac{-7(-)23} {6}=-5$

therefore

The solution is

$x=\frac{8}{3}\ cm$

6 0

3 years ago

A cola company decides to test five different brands of soft drink. The different brands have been labeled F, G, H, I, and J. Th

Yuki888 [10]

The answer is B) 20

Because you have 5 brands and you combine each with the 4 others, so 5*4=20

8 0

3 years ago

Read 2 more answers

A person who can afford a monthly payment of __________ and signed a mortgage with a monthly payment of __________ was most like

Ipatiy [6.2K]

Answer:

A . 900-1000

Step-by-step explanation:

5 0

2 years ago

If 16 is added to one-third of a number, the result is three times the number. What is the number?

AnnZ [28]

First set up the equation based on the description.

$\frac{1}{3}$ x + 16 = 3x

Use subtraction to get the "x"s on one side of the equation. You can next subtract <span> $\frac{1}{3}$ x from both sides.

16 = </span> $\frac{8}{3}$ <span> x

Now you can multiply both sides of the equation by </span> $\frac{3}{8}$ <span> to solve for x

x = 6</span>

4 0

3 years ago