Is the ratio 4.2:1.5 proportional to the ratio12.6:4.5? Explain.

Answers

Answer 1

Answer:

No

Step-by-step explanation:

All the numbers have to be multiplied by the same amount for it to be proportional

A proportional amount to 4:2:1:5 would be 12:6:3:15

They have all been multiplied by the same number 3

Answer 2

Answer:

Yes, the ratio is proportional

Step-by-step explanation:

given 4.2 : 1.5 =? 12.6 : 4.5 is it proportional

it must follow the means extremes property

[tex]\frac{a}{b}[/tex] = [tex]\frac{c}{d}[/tex]

a*d = b*c, so let's plug in the values

[tex]\frac{4.2}{1.5}[/tex] =? [tex]\frac{12.4}{4.5}[/tex]

(4.2)*(4.5) =? (1.5)*(12.6)

18.9 = 18.9 which is true; therefore the ratio is proportional


Related Questions

How many solutions does 5(2x-3)=5 have

Answers

Answer:

1

Step-by-step explanation:

because it is a linear equation

Find the m∠ULE in the triangle below.

please

Answers

Answer:

m∠ULE = 60°

Step-by-step explanation:

To find the measure of ∠ULE we will use the property of exterior angle of a triangle.

Since, measure of an exterior angle of a triangle is equal to the sum of two opposite interior angles.

m∠LUR = m∠LEU + m∠ULE

109° = 49° + m∠ULE

m∠ULE = 109 - 49

             = 60°

Therefore, measure of angle ULE is 60°.

In a class election, 30 students voted for Emerald and 15 students voted for Beau. What percent of students voted for Beau?

Answers

Answer:

1/3

Step-by-step explanation:

The total amount of students is 45. 1/3 of 45 is 15

Answer:

About 33.3% of students voted for Beau.

Write the equation of the line that passes through the points (2,5) and (2, -6). Put
your answer in fully reduced point-slope form, unless it is a vertical or horizontal line.

Answers

X=2 is the answer definately

simplify 4 ^ 9 x 4 ^ 3​

Answers

1. 4 ^ 9 x 4 ^ 3​

2. 4^9+3

answer: 4^12

Good luck!

how to expand 2(x+7) ​

Answers

Answer:

(2x + 2 x 7)

Step-by-step explanation:

When x = 1, y= 2, z = 3, then find the value of the sum of 5x square , -2x cube y and 3y to the power 4

Answers

5(1)^2 = 5 -2(1)^3(2)= -4 3(2)^4 = 48
5 - 4 + 48= 49

The answer is 49

Answer:

1305

Step-by-step explanation:

Equation = [tex]( 5x )^{2} + ( -2x ^{3} )y + ( 3y )^{4}[/tex]

               = (5×1)² + {(-2×1)³}×2 + (3×2)⁴

               = (5)² + {-2}³×2 + (6)⁴

               = 25 + (-8)×2 + 1296

               = 25 + (-16) + 1296

               = 25 - 16 + 1296

               = 9 + 1296

               = 1305

Given g(x)=-x-4, solve for x when g(x)=10

Answers

Answer:

x= -14

Step-by-step explanation:

Answer:

14

Step-by-step explanation:

g(x)=x-4

g(x)=10 = g(x)=x-4 /+4

g(x)=14

What is the binary number for 4​

Answers

Step-by-step explanation:

[tex]4=2^2=\bold1\cdot2^2+\bold0\cdot2^1+\bold0\cdot2^0\\\\4_{10}=\bold{100}_2=0100_2[/tex]

b: 8/5 + 61/2=
Please help me solve

Answers

Answer:

32.1

Step-by-step explanation:

X-7
4x + 1
ngle.
6x + 2

Find the perimeter

Answers

Answer:

ANSWER

GIVEN:

OA= 3x-1 , OC= 5x-3, OD= 6x-5 , BO = 2x+1

AO/OC = BO/OD

[The diagonals of a Trapezium divide each other proportionally]

(3x-1)/(5x-3) =( 2x+1)/(6x-5)

(3x-1) (6x-5) = (5x-3) ( 2x+1)

3x(6x-5) -1 (6x-5) = 2x(5x-3)+1(5x-3)

18x² -15x -6x +5 = 10x² -6x +5x -3

18x² -21x +5 = 10x² - x -3

18x² -10x² -21x + x +5+3 =0

8x² - 20x +8= 0

4(2x² -5x +2) = 0

2x² -5x +2 = 0

2x² -4x -x +2= 0

[By factorization]

2x(x-2) -1(x-2)= 0

(2x-1) (x-2) = 0

(2x-1) = 0 or (x-2) = 0

x = ½ or x = 2

If we put x= ½ in OD , The value of OD is negative.

Hence, the value of is x = 2.

Step-by-step explanation:

1 =29 and 2=44...............

1) find the missing side of each triangle
A) 5 km
C) 10 km
B) 13 km
D) 12 km

Answers

Answer:

c

S1tep-by-step explanation:

8x8=64

6x6=36

64+36=100

10x10=100  

x=10

You can use Pythagorean theorem. 8^2+6^2=c^2
Once you add 8^2 +6^2 you get 100=c^2
To get C on its own you need to get rid of the square so you do to opposite of squaring which is square rooting. The the square root of 100 is 10

Help Asap will mark brainliest! Prove polygon ABCDEF and polygon A′B′C′D′E′F′ are congruent or not congruent.

Answers

Answer:

They are congruent im just not sure how to prove it... maybe by showing the transformations that got it to that point?

Step-by-step explanation:

sorry ):

Answer:

They are congruent because they are the same size and shape.

Step-by-step explanation:

22. In the diagram below WXZ is a right angle. If the measure of WXV is 11 more than there times the measure of WXY and the measure of YXV = 139, find the measure of YXZ

Answers

Answer:

9(331)-123=1

Step-by-step explanation:

2. In the diagram below WXZ is a right angle. If the measure of WXV is 11 more than there times the measure of WXY and the measure of YXV = 139, find the measure of YXZ

What is the surface area of a cube with a side length of 5 inches?
O 25 square inches
O 100 square inches
O 125 square inches
O 150 square inches

Answers

The answer is :150 square inches because: a cube have equal lengths like a square so therefore 5x5 = 25. There are 6 sides of a cube so: 25x 6= 150

Answer:

for lazy people is D. >w<

Step-by-step explanation:

Find f. Write your answer as a whole number or a decimal. DO NOT ROUND

Answers

Answer:

f = 8 feet

Step-by-step explanation:

In Δ EBC

∵ DF ⊥ BE

∵ CB ⊥ BE

DF // CB

∵ D is the mid-point of CE

∵ DF // CB

F is the mid-point of EB

∵ DF joining the mid-points of EB and EC

∴ DF = [tex]\frac{1}{2}[/tex] CB

∵ CB = f and DF = 4 ft

∴ 4 = [tex]\frac{1}{2}[/tex] f

→ Multiply both sides by 2

8 = f

The value of f is 8 ft

Harper simplemente encendió una vela nueva y luego la dejó arder hasta la nada. La longitud de la vela que permanece sin quemar, en pulgadas, se puede modelar mediante la ecuación L = 15-1.5t, L = 15−1.5t, donde tt representa el número de horas desde que se encendió la vela. ¿Cuál es la pendiente de la ecuación y cuál es su interpretación en el contexto del problema?

Answers

Answer:

La pendiente de la ecuación es -1.5 y su interpretación en el contexto del problema es que en este caso este valor indica que la longitud L de la vela luego de t horas desde que se encendió la decrece en 1.5 unidades por cada hora.

Step-by-step explanation:

La función lineal se define por la ecuación

f(x) = mx + b

o

y = mx + b

donde m es la pendiente de la recta y b es la ordenada al origen.

La gráfica de una función lineal es siempre una recta.

Como se mencionó, la m es la pendiente de la recta. La pendiente es la inclinación con respecto al eje x, que es el eje de abscisas.

La pendiente m significa que si aumentamos la x en una unidad, la y aumenta en m unidades. Si m es positiva (m > 0), entonces la función es creciente. En cambio, si la m es negativa (m < 0), entonces la función es decreciente.

En este caso, siendo L=1.5 - 1.5t y comparando con la expresión y=mx + b, podes observar que el valor de la pendiente m es -1.5. Como m es un número negativo, entonces se trata de una función decreciente. En este caso este valor de pendiente indica entonces que la longitud L de la vela luego de t horas desde que se encendió la decrece en 1.5 unidades por cada hora.

La pendiente de la ecuación es -1.5 y su interpretación en el contexto del problema es que en este caso este valor indica que la longitud L de la vela luego de t horas desde que se encendió la decrece en 1.5 unidades por cada hora.

Find the slope and the y-intercept of the graph of the linear equation.
--5x = 8-y

Answers

Answer:

Slope: -5

Y-intercept: (0,8)

Step-by-step explanation:

Plz mark brainliest.

Can someone explain factoring expressions to me

Answers

Answer:

Factoring: Finding what to multiply together to get an expression. It is like "splitting" an expression into a multiplication of simpler expressions.

Hope it helps. have a wonderful thanksgiving day! :)

Which side lengths form a right triangle?
Choose all answers that apply:

Answers

Answer:

C

Step-by-step explanation:

I NEED HELP PLEASE QUICKLY FOR MY TEST I BEG YOU GUYS PLEASE!!
Square RSTU is shown below with a line AB drawn through its center. If the square is dilated using a scale factor of 4 and a line is drawn through the center of the new dilated figure, what relationship will that line have with line AB in the drawing below? (10 points) ​

Answers

Answer:

the line will remain in the same place

Step-by-step explanation:

Answer:

Give the other person brainliest :)

Step-by-step explanation:

Just trying to help

30% × 750 =
(30 ÷ 100) × 750 =
(30 × 750) ÷ 100 =
22,500 ÷ 100 =
225;​

Answers

Answer:

1.250

2.225

3.225

4.225

what is the answer for this -4(x-1)+6x=2(17-x)

Answers

Answer:

15/2 or 7.5

Step-by-step explanation:

-4(x-1)+6x=2(17-x) PEDMAS

-4x+4+6x=34-2x combine terms

2x+4=34-2x subtract 4 and add 2x

4x=30  divide by 4

x=15/2

Answer:

Step-by-step explanation:

-4x + 4 + 6x = 34 - 2x

Solving like terms

2x + 4 = 34 - 2x

Bringing like terms on one side

2x + 2x = 34 - 4

4x = 30

x = 30/4

x = 15/2

Write 2x+y=17 in slope-intercept form.

Solve for y?

Answers

Answer: y=2x+17

Step-by-step explanation:

For f(x) = -3x + 19. what is the value of x for which f(x) = 4?

X=-5

X = -1

X=5

X=6​

Answers

x= 5

f(x) = -3(5) + 19
f(x)= -15 + 19
f(x) = 4

In the figure below, m angle WXZ=113°, and m angle2 is 3° more then m angle1 Find m angle1

Answers

Answer:

m∠1 = 55° ; m∠2 = 58°

Step-by-step explanation:

Let m∠1 = x° , then m∠2 = x° + 3°

m∠1 + m∠2 = 113°

x° + x° + 3° = 113°

2x + 3 = 113

2x = 110

x = 55°

m∠1 = 55° and m∠2 = 58°

The value of m∠[tex]1[/tex] is [tex]55[/tex]° and m∠[tex]2[/tex] is [tex]58[/tex]°

In the given figure m∠WXZ = [tex]113[/tex]° and m∠[tex]2[/tex] is [tex]3[/tex]° more than  m∠[tex]1[/tex].

What is angle?

An angle is formed when two rays are joined together at a common point.

Now,

Let  m∠[tex]1[/tex] = x° and m∠[tex]2[/tex] = x° + 3°

According to given figure;

m∠[tex]1[/tex] +  m∠[tex]2[/tex] = 113°

x° + x° + 3° = 113°

2x° + 3° = 113°

2x° = 110°

x° = 55°

Hence, the value of  m∠[tex]1[/tex] = x° = 55° and m∠[tex]2[/tex] = 55° + 3° = 58°

Learn more about the Angle visit:

https://brainly.in/question/31099513

#SPJ2

5,-15,35,55....
What is the common difference

Answers

Answer:

The common difference is -20

Step-by-step explanation:

Simply subtract 5 from -15

-15-5 = -20

the common difference is -20! Person above is correct

An object's speed decreases by 5% for each minute that it is slowing down. Which of the
following is closest to the percent that its speed will decrease over half-an hour?

Answers

Answer: 79%

Step-by-step explanation:

min —> 30 mins because half an hour is 30 mins.

(1 - 0.5)^30 = .214638..

1 - .214638 = .78536

round that to the closest percent equals 79%

Write an equation in point-slope form and slope-intercept form for each line.
the line passes through (1, -1) and (2, 0)

Answers

Answer:

                                                                                           

Step-by-step explanation:

Answer:

I think its the one w -1= -1

Step-by-step explanation:

becuase 2 minus 1 is -1 nd -1 minus 0 is -1 i could be wrong

A triangle has side lengths measuring 20 cm, 5 cm, and n cm. Which describes the possible values of n?

5 < n < 15
5 < n < 20
15 < n < 20
15 < n < 25

Answers

Answer: 15 < n < 25

Step-by-step explanation: this was the answer on edge

Answer: Option 4 or D. 15 < n < 25

Step-by-step explanation: Trust Me!

If you are working on Edge the answer is correct. The proof is down below. I hope someone finds this helpful.

If you found any of my answers helpful please like and choose my answer as Brainliest. I would appreciate it! Good luck everyone! :)

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