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3 years ago

The difference of three times a number and 4 is 8. What is the value of n?

Mathematics

1 answer:

Anvisha [2.4K]3 years ago

7 0

Answer:

It’s c

Step-by-step explanation:

I just did it in edg

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The table below shows the relative frequencies of the color of cars bought last month by males and females. Which percentage rep

Pani-rosa [81]

The first thing we must do for this case is to observe the highest relative frequency of the table in the total column.
For the white car we have:
Male = 0.11
Female = 0.20
Total = 0.31
The percentage is given by:
(0.31) * (100) = 31%
Answer:
The percentage that represents the car bought most often is:
31%

6 0

3 years ago

Meg paid $9 for two tuna sandwiches. At the same rate, how much does Meg pay for 8 tuna sandwiches?

sasho [114]

She would pay 36 dollars

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4 years ago

The length of a rectangle is 7 inches more than the width. The perimeter is 30 inches. Find the length and the width of the rect

saul85 [17]

Answer:

that's all about my answer

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3 years ago

What are the factors of 2x + 3x - 54? Select two options

tiny-mole [99]

Answer:

The answer: The factors are (2x-9) and (x+6).

The Problem:

Factor $2x^2+3x-54$

Step-by-step explanation:

So I'm going to do trial factors using the choices to aid me.

Factored form for this problem if it exist will be in the form:

$(mx+n)(kx+p)$ .

In general this is what it would look like if we factored any quadratic in terms of $x$ (given the quadratic is not prime but technically you could factor even over the complex numbers).

Let's look at:

$(mx+n)(kx+p)$

We want to choose $k \text{ and } m$ such that when you multiply them you get 2. Well those would have to be 2 and 1.

$(2x+n)(x+p)$

we want to choose $n \text{ and } p$ such that when you multiply them you get -54. Based on the choices we want to get with -9 and 6, or 9 and -6. We don't know the order we want to choose it in either.

For example which of these would work:

$(2x-6)(x+9)$

$(2x+6)(x-9)$

$(2x-9)(x+6)$

$(2x+9)(x-6)$

We are going to consider only the outer and inner of FOIL since we already know the first times the first is $2x^2$ and the last times the last is $-54$ .