I need help on this math problem?

Please help me .

Margarita [4]

Answer:

(2x + 3)(x - 2)

Step-by-step explanation:

use FOIL

First, Outside, Inside, Last

2x x x = 2x²

2x x -2 = -4x

3 x x = 3x

3 x -2 = -6

2x² - 4x + 3x - 6

5 0

2 years ago

12 chickens lay 30 eggs how many eggs per chicken

algol13

10 chickens lay 2 eggs each. But 2 chickens lay 3 eggs each

4 0

3 years ago

Read 2 more answers

Tom caught 4 fish and his son caught 12 fish. The number of fish that Tom’s caught was what percent of the number of fish his so

Fofino [41]

Answer:

33.3 % (Approx) percent of fish that Tom’s caught of the number of fish his son caught .

25% is the percent of the total amount Tom caught.

Step-by-step explanation:

Formula

$Percentage = \frac{Part\ value\times 100}{Total\ values}$

Part First

As given

Tom caught 4 fish and his son caught 12 fish.

Here

Part value = 4

Total value = 12

Put in the formula

$Percentage = \frac{4\times 100}{12}$

$Percentage = \frac{400}{12}$

Percentage = 33.3 % (Approx)

Therefore the 33.3 % (Approx) percent of fish that Tom’s caught of the number of fish his son caught .

Second Part

As given

Tom caught 4 fish and his son caught 12 fish.

Total number of fish caught = 4 + 12

= 16

Part value = 4

Total value = 16

Put in the formula

$Percentage = \frac{4\times 100}{16}$

$Percentage = \frac{400}{16}$

Percentage = 25%

Therefore the 25% is the percent of the total amount Tom caught.

8 0

3 years ago

Sixty percent (60%) of those who attended the soccer game were parents. There were 120 people who

IrinaVladis [17]

Answer:

72

Step-by-step explanation:

<u>Given:</u>

There were 120 people in total.

60% were parents.

Number of parents attended.

Solution:

1. 60% of 120

It can also be written as:

$\frac{60}{100}\times \frac{120}{1}$

Simplify

Cancel zeros

$\frac{60}{100}\\\\=\frac{6}{10}$

Divide by common factor (2)

$\frac{6\div2}{10\div2}=\frac{3}{5}$

2. $\bold{\frac{3}{5}\times \frac{120}{1}}$

Multiply

$\frac{3\times120}{5\times1} = \frac{360}{5}$

Divide

$\frac{360}{5}= 360\div5=72$

Therefore, 72 parents attended the game.

4 0

2 years ago

A rectangular field has dimensions of (2x-3) yards and (x+4) yards. the area of the field is 285 square yards. what are the leng

trasher [3.6K]

The area of a rectangle is given by the multiplication of its dimensions:

$\text{Area} = \text{width} \times \text{length}$

In this case, we have an exact value for the area, and two variable expressions for width and length. Let's replace the formula above with what we're given:

$285 = (2x-3)(x+4)$

If you expand the right hand side, you have

$285 = 2 x^2+ 5 x-12$

And if you move all terms to the right hand side, this becomes

$0 = 2 x^2+ 5 x-297$

This is a quadratic equation, since it is in the form $ax^2+bx+c=0$ , where $a = 2,\ b=5 \text{ and } c = -297$

If you plug these values in the generic formula

$x_{1,2} = \dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

you get

$x = \dfrac{-27}{2} \text{ or } x = 11$

Let's see which dimensions they yield:

$x = \dfrac{-27}{2} \implies 2x-3 = -30,\quad x+4 = \dfrac{-19}{2}$

But the dimensions of a rectangle can't be negative, so we can't accept this answer.

The other solution yields

$x = 11 \implies 2x-3 = 19,\quad x+4 = 15$

So these are the dimensions of the rectangle

6 0

3 years ago

I need help on this math problem?​

I need help on this math problem?