Which is a direct variation equation?

1. Y=x+5
2. Y=-5/x
3. Y=-5x
4. Y=x-5

Help

Answer:

29

Step-by-step explanation:

Using PEMDAS, you will first evaluate the parenthesis, then exponents, (skip multiplication and division since it isn't in this problem), then addition/subtraction (order doesn't matter). So, plug in a and b where they correspond -> (3^3 - 8) which simplifies to (27 - 8) = 19. Finally add 10 + 19 = 29

hope this helps!

Answer:

29

Step-by-step explanation:

10 + (a^3 - b)

plug in your variables

10 + ((3)^3 - (8))

solve inside the parenthasis

10 + (3^3 = 27 - 8 = 19)

now we have:

10 + (19)= 29

Answer:

The quantities x and y are in a proportional relationship.

Step-by-step explanation:

[tex][Hello,BrainlyUser][/tex]

Your question is incomplete but I will try my best to answer <3

Answer/Step-by-step explanation:

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form  y/x = r

[tex][CloudBreeze][/tex]

Answer:

C is greater

D is less

Step-by-step explanation:

Answer:

The mean life time of the bulbs is approximately 739 hours

Step-by-step explanation:

Here, we want to calculate the mean life time

From the question, 95% of the bulbs die before 920 hours

What this mean is that the probability that a bulb will die before 920 hours is 95% = 95/100 = 0.95

Now, we need the z-score that is exactly equal to this value

Using the standard normal distribution table, the z-score corresponding to this probability value is 1.645

Mathematically;

z-score = (x-mean)/SD

In this case, x is 920, SD is standard deviation which is 920 hours

thus, we have it that;

1.645 = (920-mean)/110

110(1.645) = 920 - mean

180.95 = 920 - mean

mean = 920- 180.95

mean = 739.05

Answer: 39/50

Step-by-step explanation: the answer is 39/50

Answer:

the answer is 39/50

Step-by-step explanation:

thank you

Answer:

2 1/7 kg

Step-by-step explanation:

Multiply 5/7 kg by 3, obtaining 15/7 kg, or 2 1/7 kg

Answer:

amy made 5.775 while vickie made 17.325

Step-by-step explanation:

i dunno

Brainly bot here, telling you that your account has been  temporarily banned, and the only people that can answer your questions are the other banned accounts. dm the managers to find out more information.

Step-by-step explanation:

A. b x 30 = 7E. b x 7 =30C. b = 30 + 7

Answer:

x<5

Step-by-step explanation:

Answer:

-15/4

C:15/-4

Step-by-step explanation:

a negative number divided by another negative number gives a positive number : -15 / - 4 = +3.75

-15/4 and 15/-4 = -3.75

15/4 = 3.75 (two positive numbers divided with each other yields a positive number)

-4/15 and 4 / -15 = 0.27

Answer:

first the primerter then the area

Step-by-step explanation:

Answer:

The height of the cone is simple... here are the steps

Step-by-step explanation:

V= 1/3πr²h

V would be 1,398

π would be 3.14

r² 9.2x9.2

so the new equation is 1,398=1/3(3.14)(84.64)h

Now to get h all by itself multiply all in the equation... after divide by 1/3

1,398= whatever number xh

Now divide that whatever number by 1,398 and you find the height.

Hope this helps.

Equation of a line is given by

m (x - x¹) = (y - y¹)

where (x¹ , y¹ ) and (x² , y²)

(-2,-2 ) and (2 , -4)

but equation of a line is given by

m (x - x¹) = ( y - y¹)

Answer:

.25881

Step-by-step explanation:

sin15

=sin(45-30)

=sin45.cos30-cos45.sin30

=(0.707×0.86)-(0.707×0.5)

=(0.6082)-(0.3535)

=0.25

Answer:

15i-18=12

15i=12+18

15i=30

i=30/15

i=2

Answer:

A and C are parallel

Step-by-step explanation:

They both are 70 degrees

Answer and Step-by-step explanation:

Lines A and C MUST be parallel.

This is because they both have the same vertical angles, that being 70 degrees. The other lines have different angle measures, so those can't be parallel.

So, the answer is:

D. A and C

#teamtrees #PAW (Plant And Water)

Answer:

Solution given;

2x²+4x-6

2x²+6x-2x-6

2x(x+3)-2(x+3)

(x+3)(2x-2)

is your answer

Answer:

2(x + 3)(x - 1)

Step-by-step explanation:

Given

2x² + 4x - 6 ← factor out 2 from each term

= 2(x² + 2x - 3) ← factor the quadratic

Consider the factors of the constant term (- 3) which sum to give the coefficient of the x- term (+ 2)

The factors are + 3 and - 1 , since

3 × - 1 = - 3 and 3 - 1 = + 2 , then

x² + 2x - 3 = (x + 3)(x - 1) , so

2x² + 4x - 6 = 2(x + 3)(x - 1) ← in factored form

Answer:

2

Step-by-step explanation:

Hello, I Am BrotherEye

Below Are Imformation That Will Nourish You

Answer:

Arc Measure Given In Degrees

Find the circumference of the circle and then multiply by the measure of the arc divided by 360°. Remember that the measure of the arc is equal to the measure of the central angle. where r is the radius of the circle and m is the measure of the arc (or central angle) in degrees.

Step-by-step explanation:

The best way to measure an angle is to use a protractor. To do this, you'll start by lining up one ray along the 0-degree line on the protractor. Then, line up the vertex with the midpoint of the protractor. Follow the second ray to determine the angle's measurement to the nearest degree.

Answer:

0.25

Step-by-step explanation:

Answer:

The Correct Answer Is D. 0.25 I Did The Exam

Step-by-step explanation:

perimeter: 59

area: 247

Answer:

agreed

Step-by-step explanation:

Answer:

[tex]V=45396.2\ cm^3[/tex]

Step-by-step explanation:

Given that,

The dimensions of an aquarium are 61 cm long, 30.5 cm wide, and 30.5 cm high.

The tank is filled to 80% capacity with water.

We need to find the water needed for this tank.

The volume of cuboid is given by :

[tex]V=lbh[/tex]

As it is filled to 80% capacity, so,

[tex]V=\dfrac{80}{100}\times lbh\\\\=0.8\times 61\times 30.5\times 30.5\\\\V=45396.2\ cm^3[/tex]

So, [tex]45396.2\ cm^3[/tex] of water is needed for this tank.

Answer:

[tex]x=-10;x=2[/tex]

Step-by-step explanation:

[tex](x+10)(x-2)=0\\(-10+10)(-10-2)=0\\0(-12)=0\\0=0[/tex]

[tex](x+10)(x-2)=0\\(2+10)(2-2)=0\\0(12)=0\\0=0[/tex]

Answer:

B) 0=(2x+3)(x-1)

Step-by-step explanation:

factor the equation f(x) = 2x² + x - 3

=> f(x) = (2x + 3)(x - 1)

Option B is correct.

A zero of a function is a member of x of the domain of f such that f(x) vanishes at x, that is the function f attains the value of 0 at x.

According to the given question

we have a function

[tex]f(x)=2x^{2} +x-3[/tex]

[tex]f(x)=2x^{2} + 3x-2x-3[/tex]

[tex]f(x)=2x^{2} -2x+3x-3[/tex]

[tex]f(x)=2x(x-1)+3(x-1)[/tex]

[tex]f(x)=(2x+3)(x-1)[/tex]

for finding the zeros of f(x), substitute f(x)=0

[tex](2x+3)(x-1)=0\\[/tex]

⇒ x=[tex]\frac{-3}{2}[/tex] and x=1

Hence, option B is used for finding the zeros of the given function f(x).

Learn more about the zeros of function here:

https://brainly.com/question/944636

#SPJ2

Answer:

Breadth = 12 m

Step-by-step explanation:

Area of a rectangle is given by the formula,

Area = Length × Width

Value of area and length of the rectangular park has been given in this question.

Therefore, by substituting these values in the formula,

300 = 25 × Width

Width = [tex]\frac{300}{25}[/tex]

          = 12 m

Therefore, width or breadth of the rectangular park will be 12 m.

Therefore, the required vertices after rotation are W'(5,3), X'(3,1),Y'(5,-1) and Z'(7,1).