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EastWind [94]
3 years ago
11

Is y=-5/9x proportional

Mathematics
1 answer:
Alexxandr [17]3 years ago
8 0

Answer:

No

Step-by-step explanation:

I don't think it is proportional

You might be interested in
A street lamp casts a shadow 31.5 feet long, while an 8 foot-tall street sign casts a shadow of 14 feet long. What is the length
sergeinik [125]

Answer:

The answer to your question is the height of the lamp is 18.2 ft

Step-by-step explanation:

Data

Street lamp shadow = 31.5 ft

Street sign height = 8 ft

Street sign shadow = 14 ft

Street lamp height = x

Process

1.- To find the height of the lamp use proportions. In this kind of problem, we do not look for the length, but the shadow.

Street lamp height/street lamp shadow = street sign height/street sign

                                                                                                         shadow

Substitution

                                             x / 31.5 = 8 / 14

Solve for x

                                            x = (31.5)(8) / 14

Simplification

                                            x = 254.4 / 14

Result

                                            x = 18.2 ft              

4 0
3 years ago
Please help me I really need help
charle [14.2K]

Answer:

  1. 4
  2. 25

Step-by-step explanation:

A calculator is your friend for such problems.

___

Evaluating these by hand, the <em>Order of Operations</em> applies. First you do what's in parentheses, then you do multiplication, then addition/subtraction.

1. (3/4)·(12·4 -16) -20 = (3/4)(48 -16) -20 = (3/4)·32 -20 = 24 -20 = 4

2. (5/9)·(12·6 -42 +15) = (5/9)·(72 -42 +15) = (5/9)·(30 +15) = (5/9)·45 = 25

___

Of course, the <em>Order of Operations</em> applies within each level of parentheses.

Adding the opposite of a number is the same as subtraction. Likewise, subtracting the opposite of a number is the same as adding the number. The usual associative and commutative properties of addition and multiplication apply. Among other things, that means you can compute the product of an integer and a fraction in any convenient way:

  (3/4)·32 = 3·(32/4) = 3·8 = 24

  (5/9)·45 = 5·(45/9) = 5·5 = 25

4 0
3 years ago
Item5 Time Remaining 56 minutes 30 seconds00:56:30 Item 5Item 5 Time Remaining 56 minutes 30 seconds00:56:30 A pure sample of tr
trapecia [35]

Answer:

option A

Step-by-step explanation:

given,

sample of tritium, ³H

t_{1/2} = 12.32 years

contents present of ³H = 5.25 mol

content of ³He = 6.35 mol

reaction

 ^3H\rightarrow \ ^3He

A₀ is the initial concentration

At is the concentration after time t

A₀ = 5.25 + 6.35 = 11.6 mol

At = 5.25

now,

  k = \dfrac{0.693}{t_{1/2}}

  k = \dfrac{0.693}{12.32}

           k = 0.0563 /year

ln(\dfrac{A_o}{A_t}) = k t

t = \dfrac{1}{k} ln(\dfrac{A_o}{A_t})

t = \dfrac{1}{0.0563} ln(\dfrac{11.6}{5.25})

t = 14.1 yr

hence, the correct answer is option A

7 0
3 years ago
In a​ lottery, the top cash prize was ​$615 ​million, going to three lucky winners. Players pick four different numbers from 1 t
Ivan

Answer:

10063571 out of 593750689 or 1.69491525424%

Step-by-step explanation:

To find probability when all variables are known, you can just multiply the numbers you need. In this case we multiply 59 * 59 * 59 *49 since these are the balls we are picking from. We can find the chance of the top prize by multiplying all the numbers. 59 * 59 * 59 * 59 * 49

4 0
3 years ago
The area of a square is 36 square inches. What is the perimeter of half the square?
Bad White [126]

The formula for the perimeter of a square is P = 4s, where s is the length of one of the four (4) congruent sides of the square.

The formula for the area of a square is A = s², and we're given that the area of a square, whose perimeter we're trying to find, is 36 sq. units; therefore, we have:

A = s²

36 sq. units = s²

√(36 sq. units) = √s²

6 units = s (Note: We used the positive square root (6) rather than the negative square root (-6) since you physically can't have a negative length!)

Therefore, ...

P = 4s

P = 4(6 units)

P = 24 units is the perimeter of a square whose area is 36 square units

7 0
3 years ago
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