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Elenna [48]
3 years ago
11

8 Find y' implicitly for 2x4 – y4 = 7.

Mathematics
1 answer:
horrorfan [7]3 years ago
3 0

Answer:

x = 4

Step-by-step explanation:

I used a caculator

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The plane is tiled by congruent squares of side length $a$ and congruent pentagons of side lengths $a$ and $\frac{a\sqrt{2}}{2}$
umka2103 [35]

The percentage of this plane that's enclosed by the pentagons is closest to: D. 56.

<h3>How to determine the percentage?</h3>

Since the side of the small square is a, then the area of the tile is

given by:

Area of tiles = 9a²

<u>Note:</u> With an area of 9a², 4a² is covered by squares while 5a² by pentagons.

This ultimately implies that, 5/9 of the tiles are covered by pentagons and this can be expressed as a percentage as follows:

Percent = 5/9 × 100

Percent = 0.555 × 100

Percent = 55.5 ≈ 56%.

Read more on area of square here: brainly.com/question/8902873

#SPJ1

Complete Question:

The plane is tiled by congruent squares of side length a and congruent pentagons of side lengths a and a²/a, as arranged in the diagram below. The percent of the plane that is enclosed by the pentagons is closest to (A) 50 (B) 52 (C) 54 (D) 56 (E) 58

3 0
2 years ago
Please help with 11c!?
Contact [7]

Answer:

"To the nearest year, it would be about 9 years"

Step-by-step explanation:

11c)

This is compound growth problem. It goes by the formula:

F=P(1+r)^t

Where

F is the future amount

P is the present (initial) amount

r is the rate of growth, in decimal

t is the time in years

Given,

P = 20,000

r = 8% = 8/100 = 0.08

F = double of initial amount = 2 * 20,000 = 40,000

We need to find t:

F=P(1+r)^t\\40,000=20,000(1+0.08)^t\\2=(1.08)^t

To solve exponentials, we can take Natural Log (Ln) of both sides:

2=(1.08)^t\\Ln(2)=Ln((1.08)^t)

Using the rule shown below we can simplify and solve:

Ln(a^b)=bLn(a)

We can write:

Ln(2)=Ln((1.08)^t)\\Ln(2)=tLn(1.08)\\t=\frac{Ln(2)}{Ln(1.08)}\\t=9.0064

To the nearest year, that would be about 9 years

5 0
3 years ago
A rectangular rug is 24 feet long and 10 feet wide. A rhombus design is formed inside the rug by joining the midpoints of each s
Mice21 [21]

In all geometry problems, drawing a diagram is most helpful.

The half-side lengths are 5 feet and 12 feet.

By the Pythagorean Theorem, the hypothenuse, or side length of the rhombus is therefore

sqrt(5^2+12^2)=sqrt(169)=sqrt(13^2)

= 13 feet.

See diagram below.

6 0
3 years ago
A skirt originally cost $28. Alicia pays $21 for the skirt during a scale. What percent does Alicia save with the sale? (helpp )
kow [346]

Answer:

25% is the answer.,....

money Alicia save= 28-21= 7

percentage Alicia saves with the sale= 7/28*100

= 25%

3 0
3 years ago
Read 2 more answers
Y=4x y=-2x-6 how to sovle this
Talja [164]

Answer:


Step-by-step explanation:


Substitute 4x for Y: 4x = -2x -6


Now add 2x to both sides

(due to reciprocal, the opposite of -2x is positive 2x): 4x + 2x = -2x +2x -6


Add common like terms

(4x + 2x = 6x and -2x + 2x cancel out leaving -6 alone): 6x = 6


Now get X alone by dividing the 6 to both sides: 6x/6 = -6/6


Since you're dividing a negative and a positive, the outcome will be a negative so the answer is: X= -6


Hope this helps :)

3 0
4 years ago
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