2 years ago

Solve for x and y by substitution method

Mathematics

2 answers:

-Dominant- [34]2 years ago

4 0

Answer:

15 and 4+4

Step-by-step explanation:

i think its correct

zubka84 [21]2 years ago

3 0

Answer:

Step-by-step explanation:

Because if you simplify you get that

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A rectangle has an area of 24 square units and a side length of 2 3/4 units. Find the other side length of the rectangle. (Answe

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The answer is 8 8/11

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A year ago, Leila wanted to buy a necklace that cost $25.00. This year the same necklace cost $30.00. What was the percent incre

Delicious77 [7]

Answer:

20 %

Step-by-step explanation:

% Increase = Increase/Original value × 100 %

Data:

Original = $25

This year = $30

Calculations:

Increase = This year - original

= 30 - 25

= $5

% Increase = 5/25 × 100 %

= 20 %

The percent increase of the price of the necklace was 20 %.

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3 years ago

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Step-by-step explanation:

7 0

3 years ago

Find the nth degree polynomial function with real coefficients satisfying the given conditions.

RUDIKE [14]

$\bf (x+1)(x-3)(x-2-4i)(x-2+4i)
\\\\
\textit{now, let's take a peek at }(x-2-4i)(x-2+4i)\\
\textit{and recall our }\textit{difference of squares}
\\ \quad \\
(a-b)(a+b) = a^2-b^2\qquad \qquad 
a^2-b^2 = (a-b)(a+b)\\\\
-----------------------------\\\\
(x-2-4i)(x-2+4i)\implies [(x-2)-(4i)][(x-2)+(4i)]
\\\\\
[(x-2)^2-(4i)^2]\implies [(x^2-2x+4)-(4^2\boxed{i^2})]
\\\\\
[(x^2-2x+4)-(16\cdot \boxed{-1})]\implies [(x^2-2x+4)+16]
\\\\
(x^2-2x+20)\\\\
-----------------------------$

$\bf thus
\\\\

\begin{array}{llll}
(x+1)(x-3)\\(x-2-4i)(x-2+4i)
\end{array}\implies (x+1)(x-3)(x^2-2x+20)
\\\\\\
(x^2-2x-3)(x^2-2x+20)\implies 
\begin{array}{llll}
x^4-2x^3+20x^2-2x^3\\+4x^2-40x+3x^2-6x+60
\end{array}
\\\\\\
x^4-4x^3+27x^2-46x+60$

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2 years ago

IPod Touch 64 GB<br> On Sale For $299.99<br> Originally $349.99<br> _______% Savings

liubo4ka [24]

Answer:

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Step-by-step explanation:

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3 0

2 years ago