What percent of 80 is 56 ( how do i show my work for this)

Answers

Answer 1

Answer: Simple......................... :D

It's asking...

What percent of 80 is 56? ----------->>>

----->>>

x*80=56

80x=56

x= $(56)/(80)$

=0.7

Change into a percent...(Move decimal to the right 2 places...)

=70%

Thus, your answer.

Answer 2

Answer: Hi there! P%=Y/X. P%=56/80. P=0.7. P%=0.7*100=70%. Therefore. 70% of 80 is 56.

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Help ASAP!!!!Select all expressions that are perfect squares.

Group of answer choices

2x^2+20x+100

9x^2+24x+16

(7−3x)^2

(5x+4)(5x−4)

(1−2x)(−2x+1)

4^2+6+9/4

Answers

The expressions that are perfect squares are:

2x² + 20x + 100

9x² + 24x + 16

(7 - 3x)²

To determine which expressions are perfect squares, we need to check if they can be written in the form of (a + b)², where a and b are real numbers.

Let's go through each expression:

2x² + 20x + 100:

This expression can be factored as (x + 10)², so it is a perfect square.

9x² + 24x + 16:

This expression can be factored as (3x + 4)², so it is a perfect square.

(7 - 3x)²:

This expression is already in the form (a - b)², so it is a perfect square.

(5x + 4)(5x - 4):

This is the difference of squares, not a perfect square itself.

(1 - 2x)(-2x + 1):

This is the difference of squares, not a perfect square itself.

4² + 6 + 9/4:

Simplifying, we get 16 + 6 + 9/4 = 22 + 9/4.

This expression is not a perfect square.

To learn more on Expressions click:

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Answer:

2x^2+20x+100, 9x^2+24x+16, (1−2x)(−2x+1), (5x+4)(5x−4), (7−3x)^2

What is the square root of 64

Answers

Positive 8 and negative 8 both are.

the square root of 64 is 8 or -8
because 8²=64 and (-8)²=64

This one just scares me how do i even figure this out?

Answers

Because the middle point is in the center of the square, the triangle containing angle 2 is isosceles and right (since two sides are equal to half the square's side length), so angle 2 measures (180-90)/2=45 degrees.

Answer:

this is c

Step-by-step explanation:

Luisianna

4c^2-8c-1=0 complete the square round to nearest hundredth

Answers

move constant to other side
add 1
4c^2-8c=1
divide by 4 to make leading coeficient 1
c^2-2c=1/4
take 1/2 of linear coeficient and square it
-2/2=-1, (-1)^2=1
add that to both sides
c^2-2c+1=1/4+1
factor perfect squaer and add
(c-1)^2=5/4
square root both sides
c-1=+/-(√5)/2
add 1
c=1+/-(√5)/2

c=2.12 or -0.12

A circle cuts the x-axis at (4,0) and (14,0), and cuts the y-axis at (0,6) and (0,8). Find it's equation

Answers

It is not a circle but you can find the equation of the ellipse.
To do this we need to work out the major and minor radii and the centre
The centre is at (9, 7)
The major (y) radius is 1 and the minor (x) radius is 5
Therefore the equation is (x-9)/5 + (y-7)/1 = 1

A triangle with vertices at A(0, 0), B(0, 4), and C(6, 0) is dilated to yield a triangle with vertices at A′(0, 0), B′(0, 10), and C′(15, 0)-. The origin is the center of dilation. What is the scale factor of the dilation?

Answers

A triangle ABC is similar to a triangle A´B´C´ The scale factor of the dilatation : s.
0 * s =0
4 * s = 10
6 * s = 15
s= 10/4=15/6=2.5
The scale factor of the dilatation is 2.5. It is shown in the attachment.

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a soccer goal is in the shape of a triangular prism. the base and height of the right triangles at the sides of the goal measure 4 feet and 8 feet and the opening along the front is 24 feet long. how many cubic feet of space is 24 feet long. how many cubic feet of space is contained within this goal?