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4 years ago

What is 20 percent off of 30 dollars?

Mathematics

2 answers:

just olya [345]4 years ago

4 0

Answer:

Step-by-step explanation:

$p\%=\dfrac{p}{100}\\\\20\%=\dfrac{20}{100}=\dfrac{2}{10}=0.2\\\\20\%\ of\ \$30\to0.2\cdot\$30=\$6.00$

Cloud [144]4 years ago

3 0

[tex] \frac{20}{100} \times 30 = \\ \frac{20}{10} \times 3 = \\ \frac{2}{1} \times 3 = 6

that is your answer hope that helped you!

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X|−10|=3 find all possible values of x

hram777 [196]

Answer:

x=13

Step-by-step explanation:

so,x-10=3

or,x=3+10

or,x=13

therefore, x=13

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3 years ago

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The capacity of a backyard pool would most likely be measured in which unit?

Zolol [24]

Answer:

I would use cubic meters :)

Step-by-step explanation:

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3 years ago

Which of these is a unit of density?

Naddika [18.5K]

<h3>Answer:- </h3>

$\longrightarrow \textsf{The unit of density is\;}$ $\sf kg/m^3$

<h3>Solution :-</h3>

$\green{ \underline { \boxed{ \sf{Density = \frac{Mass}{Volume}}}}}$

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4 0

3 years ago

This star is made up of 4 equilateral triangles of equal area and a square.

pentagon [3]

Answer:

24 cm

Step-by-step explanation:

Given: Picture of the star is made up of 4 unshaded equilateral triangles of equal area and a shaded square.

Area of the shaded region (square) = $9\,\, cm^2$

To find: the perimeter of the star

Solution:

Area of the shaded region (square) = $9\,\, cm^2$

Area of square = $(side)^2$

$(side)^2=9\\side=3\,\,cm$

As each equilateral triangle has side lengths that are the same as the side length of the square,

length of side of the star = 3 cm

Perimeter is the sum of lengths of the sides.

Perimeter of star = sum of 8 sides of the star

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4 years ago

Solve this I need it solved

gizmo_the_mogwai [7]

Answer:

option 3

Step-by-step explanation:

$Standard \ quadratic \ equation : ax^2 + bx +c$

Larger the value of '' a '' makes the parabola narrow.

A positive value of '' a '' which is close to 0 makes the parabola wide.

To find the widest graph , find the smallest a. (or a closest to zero)

option 1

$a_1 = \frac{1}{3}$

option 2

$a_2 = - \frac{4}{5}$

option 3

$a_3 = 0.3 = \frac{3}{10}$

option 4

$a_4 = -4$

Positive and negative value of ' a ' decides the direction the parabola opens.

But we have to find the widest parabola irrespective of the direction.

So we will find the smallest ' a '

$a_1 = 0.33\\a_2 = 0.80\\a_3 = 0.30\\a_4 = 4$

$a_3 \ is \ the \ smallest \ number \ or\ \\ the \ number \ closest \ to\ zero.\\\ so \ option \ 3 \ makes\ the\ widest \ parabola.$

8 0

3 years ago

What is 20 percent off of 30 dollars?​

What is 20 percent off of 30 dollars?