3 years ago

I don't quite get 4.

Mathematics

2 answers:

Black_prince [1.1K]3 years ago

8 0

Times each by two it looks like. Then just write the answer in scientific notation.

FrozenT [24]3 years ago

5 0

Multiply each by two. Then answer with a science notation

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(2x to the 5th power) 3x to the 3/5th power

saul85 [17]

The expression simplifies to 6x^(28/5)
hope this helps :)

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3 years ago

At the supermarket , 6 mangoes cost 6.12

Grace [21]

Answer:

good to know. but what's the question?

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3 years ago

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the area of a rectangular wall of a barn is 154 square feet. it's length is 8 feet longer than twice its width. find the length

Lady_Fox [76]

Answer:

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3 years ago

Can someone help me in number 3 please

Sholpan [36]

Area of rectangle is the multiplication between the sides.

The first rectangle:

A = (2x + 5) . (3x - 2)

A = 2x . 3x - 2 . 2x + 5 . 3x - 2 . 5

A = 6x² - 4x + 15x - 10

A = 6x² + 11x - 10

The second rectangle:

A = (5y + 5) . (2y - 3)

A = 5y . 2y - 3 . 5y + 5 . 2y - 3 . 5

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4 0

3 years ago

In simplest radical form, what are the solutions to the quadratic equation 6 = x2 – 10x?

vichka [17]

Answer:

$x = 5+\sqrt{31}\,\, and\,\, x=5-\sqrt{31}$

Step-by-step explanation:

We need to solve the quadratic equation

6 = x^2 -10x

Rearranging we get,

x^2-10x-6=0

Using quadratic formula to solve the quadratic equation

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

a= 1, b =-10 and c=6

Putting values in the quadratic formula

$x=\frac{-(-10)\pm\sqrt{(-10)^2-4(1)(-6)}}{2(1)}\\x=\frac{10\pm\sqrt{100+24}}{2}\\x=\frac{10\pm\sqrt{124}}{2}\\x=\frac{10\pm\sqrt{2*2*31}}{2}\\x=\frac{10\pm\sqrt{2^2*31}}{2}\\x=\frac{10\pm2\sqrt{31}}{2}\\x = 5\pm\sqrt{31}$

So, $x=5+\sqrt{31}\,\, and\,\, x=5-\sqrt{31}$

3 0

3 years ago

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