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Kaylis [27]
3 years ago
8

When 1600 is increased by 20% and the resulting number is decreased by y% the answer is 1536. Find the value of y?

Mathematics
1 answer:
svet-max [94.6K]3 years ago
7 0
100% = 1600
120% = 1920

1920/120 = 1536/y
1920y = <span>184320 (cross multiply)
y = 96%
decrease of 24% from 1920</span>
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A levee protects a town in a low-lying area from flooding. According to geologists, the banks of the levee are eroding (wearing
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Answer:

The signed number that indicates how much of the levee will erode during the next decade is:

-30 feet

Step-by-step explanation:

a) Data and Calculations:

Erosion rate of the banks of the levee = 3 feet per year

For 10 years, if nothing is done to correct the problem, the eroded banks will be equal to 10 * 3 = 30 feet

Therefore, the signed erosion in the next decade is -30 feet.

b) The quantity of erosion can be given as the number of years involved without correction, multiplied by the rate of erosion per year.  This implies that the quantity of erosion depends on the number of years and the rate of erosion per year.

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3 years ago
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AURORKA [14]

Answer:

1- BE

2- CF

3 - AD

4 - B

5 -

6 - A

7- S

8- D

9- CDF / BDE

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11 - D

12 -DC / DF

7 0
3 years ago
It is 6 kilometers from Linda's house to the nearest mailbox. How far is it in meters?
Zanzabum

Answer:

6000 meters

Step-by-step explanation:

Each kilometer is 1000 meters so 1000 x 6 is 6000

3 0
2 years ago
Find the missing x- and y-values and Pythagorean triples can be generated using the identity given. Write the triple in parenthe
ddd [48]

The complete question is:

Find the missing x- and y-values and Pythagorean triples using the identity given:

(x² - y²)² + (2xy)² = (x² + y²)²

X Value: 4

Y Value: 3

Pythagorean Triples: ?

X Value: 5

Y Value: ?

Pythagorean Triples: (9,40,41)

X Value: ?

Y Value: 3

Pythagorean Triples: (27,36,45)

X Value: 7

Y Value: 5

Pythagorean Triples: ?

Step-by-step explanation:

Pythagorean triples are three numbers p, q, r, that satisfy Pythagoras' theorem.

That is, they are numbers such that

r² = p² + q².

Given the identity

(x² - y²)² + (2xy)² = (x² + y²)²

We can say tha

p = x² - y²

q = 2xy

r = x² + y²

Now, let us use this to solve the given problems.

X Value: 4

Y Value: 3

p = 4² - 3² = 7

q = 2×3×4 = 24

r = 3² + 4² = 25

Pythagorean Triples: (7,24,25)

X Value: 5

Y Value: ? = (4)

q = 2xy = 40

2×5×y = 40

y = 40/10 = 4

Pythagorean Triples: (9,40,41)

X Value: ? = (6)

Y Value: 3

2xy = q = 36

2×3×x = 36

x = 36/6 = 6

Pythagorean Triples: (27,36,45)

X Value: 7

Y Value: 5

p = 7² - 5² = 24

q = 2×7×5 = 70

r = 7² + 5² = 74

Pythagorean Triples: ? = (24,70,74)

8 0
3 years ago
Number 8 please hurry
Hitman42 [59]

Answer:

A rational number is normally number that can be expressed in the form of p/q where q ≠ 0. But, \sqrt{42} cannot be expressed in the form of p/q. So. this means that

(Can I have Brainliest please? It really helps me help more people in Brainly!)

3 0
3 years ago
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