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3 years ago

Helppppp me pleaseeee !

Mathematics

2 answers:

Aloiza [94]3 years ago

8 0

The answer is to your question is 1

horrorfan [7]3 years ago

4 0

The correct answer is 1.

Lol how that big of an expression can equal one :))

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Yves bought 420 tropical fish for a museum display. He bought 6 times as many parrotfish as angelfish. How many of each type of

mariarad [96]

1)421x=6
x=70

2)x+6(6x)=420
x+36x=420
37x=420
x=11

3)x-6x=420
5x=420
x=84

4)x+6x=420
7x=420
x=60

5 0

3 years ago

Read 2 more answers

Stacey has a square piece of cloth. She cuts 3 inches off of the length of the square and 3 inches

Mamont248 [21]

Answer:

6 in

Step-by-step explanation:

Let x = the side length of the original square.

They removed 3 in from each side of the original square, so the side lengths of the remaining square are x - 3 in.

The area of the smaller square is (x - 3)².

The area of the original square is x²

I assume the area of the smaller square is ¼ that of the original square. Then

1. Solve for x

$\begin{array}{rcl}\frac{1}{4}x^{2} & = & (x - 3)^{2}\\x^{2} & = & 4(x - 3)^{2}\\& = & 4(x^{2} - 6x + 9)\\x^{2}& = & 4x^{2} - 24x + 36\\3x^{2} - 24x + 36 & = & 0\\x^{2} - 8x + 12 & = & 0\\(x - 2)(x - 6) & = & 0\\x - 2 = 0& \qquad &x - 6 = 0\\x = 2& \qquad &x = 6\\\end{array}$

2. Calculate the side length of the smaller square

(a) x = 2

Side length = x - 3 = 2 - 3 = -1 in.

IMPOSSIBLE. You can't have a negative side length.

(b) x = 6

Side length of smaller square = 6 - 3 = 3 in.

Side length of original square = x = 6 in

Check:

$\begin{array}{rcl}\frac{1}{4}(6)^{2} & = & (6 - 3)^{2}\\\frac{1}{4}\times 36 & = & 3^{2}\\9 & = & 9\\\end{array}$

OK.

3 0

3 years ago

X/9 = 9/27 please solve this for me

mars1129 [50]

Answer:

x=3

Step-by-step explanation:

This is a proportional equation:

Given: x/9=9/27

Cross-multiply: 27x=81

Divide: x=3

So x=3

6 0

3 years ago

Read 2 more answers

Cruz is the editor of a magazine.

Nikitich [7]

Answer:

Step-by-step explanation:

20% * 40 = 20 / 100 * 40 = 800 / 100 = 8

1/4 * 40 = 40 / 4 = 10

So far we have use 8 + 10 = 18

There are 40 - 18 pages left

articles = 22

6 0

3 years ago

PLZ NEED HELP DUE TONIGHT

coldgirl [10]

Answer:

-10 and -2/5

Step-by-step explanation

-10÷ $-\frac{2}{5}$ = 25

Check

25 > 10

5 0

3 years ago