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4 years ago

I need help on this can someone help.

Mathematics

1 answer:

nikitadnepr [17]4 years ago

7 0

Answer:

A = 6 * 7

Step-by-step explanation:

This is a parallelogram and we can find the area by

A = bh where b is the base and h is the height

A = 6 * 7

A = 42

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Solve for the roots in the equation below. In your final answer, include each of the necessary steps and calculations. Hint: Use

QveST [7]

$\bf 27\implies 3^3\\\\
i^3\implies i\cdot i\cdot i\implies i^2\cdot i\implies -1\cdot i\implies -i\\\\
-----------------------------\\\\
x^3-27i=0\implies x^3+3^3(-i)=0\implies x^3+(3^3i^3)=0
\\\\\\
x^3+(3i)^3=0\\\\
-----------------------------\\\\
\textit{difference of cubes}
\\ \quad \\
a^3+b^3 = (a+b)(a^2-ab+b^2)\qquad
(a+b)(a^2-ab+b^2)= a^3+b^3\\\\
-----------------------------\\\\$

$\bf (x+3i)[x^2-3ix+(3i)^2]=0\implies 
\begin{cases}
x+3i=0\implies \boxed{x=-3i}\\\\
x^2-3ix+(3i)^2=0
\end{cases}
\\\\\\
\textit{now, for the second one, we'd need the quadratic formula}
\\\\\\
x^2-3ix+(3i)^2=0\implies x^2-3ix+(3^2i^2)=0
$

$\bf x^2-3ix+(-9)=0\implies x^2-3ix-9=0
\\\\\\
\textit{quadratic formula}\\\\
x= \cfrac{ - {{ b}} \pm \sqrt { {{ b}}^2 -4{{ a}}{{ c}}}}{2{{ a}}}\implies x=\cfrac{3i\pm\sqrt{(-3i)^2-4(1)(-9)}}{2(1)}
\\\\\\
x=\cfrac{3i\pm\sqrt{(-3)^2i^2+36}}{2}\implies x=\cfrac{3i\pm\sqrt{-9+36}}{2}
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x=\cfrac{3i\pm\sqrt{27}}{2}\implies \boxed{x=\cfrac{3i\pm 3\sqrt{3}}{2}}$

7 0

3 years ago

Solve for x by factoring and using the zero product property <br><br>3x^2-13x-10=0

leonid [27]

move all terms to the left side and set equals to zero. then set each factor equal to zero

4 0

3 years ago

More maths! Will mark brainliest if correct.

fomenos

Answer:

Step-by-step explanation:

Triangle:

Base = 4 units

Height = 3 units {perpendicular height}

$Area=\frac{1}{2}*base*height\\\\=\frac{1}{2}*4*3\\\\=2*3$

= 6 square units

Rectangle:

To find the area count the number of squares. Number of square = 6

Area = 6 square units

or You can find the area of the rectangle as bellow also

Length = 3 units

Width = 2 units

Area = length*width

= 3*2

= 6 square units

Both the triangle and rectangles has the same area 6 square units

3 0

3 years ago

Which expression is equivalent to one over fourn − 16?

ryzh [129]

The correct answer is 1/4(n - 64).

1/4n - 16 Write Original expression
0.25n -16 Simplify the fraction
0.25(n - 64) Distribute(take out) 0.25 from n-16
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I hope this helps!

8 0

3 years ago

Use inductive reasoning to predict the next three numbers in the pattern (or sequence).

Arada [10]

Answer:

28, 35, 43

Step-by-step explanation:

8-7 = 1

10-8 = 2

13-10 = 3

As you can see you need to add one extra numbers and the sequence goes on

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2 years ago