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3 years ago

- 2y + 3 = - 4y The solution set is what???

Mathematics

2 answers:

lianna [129]3 years ago

8 0

Answer:

Y=-3/2

Step-by-step explanation:

-2y+3=-4y

Move constant to the right by adding its opposite to both sides

-2y+3-3=-4y-3

Eliminate the opposites

-2y=-4y-3

collect the like terms

-2y+4y

collect the like terms

(-2+4)y

Calculate the sum

2y=-3

divide both sides of the equation by 2

2y÷2=-3÷2

Any expression divided by itself equal 1

y=-3÷2

y=-3/2

Finger [1]3 years ago

3 0

You would add -2y to -4y and get -6y then you would divide -6 and 3 and you would get 3/-6= -0.5 so. Y=-0.5 I hope this helped

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Jake draws a drinking glass with a scale of 2 units on his graph paper represents 2.5 cm. The glass is 8 units tall in the drawi

alexandr1967 [171]

Answer:

Ratio 2= 2.5

8= 10

10cm

Step-by-step explanation:

Ratios and multiply each side by 4 to get the ratio 2:2.5 to 8:10

5 0

3 years ago

Circle A has an area of 25pi square units. Circle B has a radius that is 20% larger than Circle A. What is the area of Circle B?

SVEN [57.7K]

Answer:

Circle B area = 49π square units

Step-by-step explanation:

Circle A radius =√25 = 5 units

(1.2)(5) = 7 = radius circle B

Circle B area = 7²π = 49π square units

3 0

3 years ago

Solve for y 6=2(y+2)

AleksandrR [38]

Answer:

y=1

Step-by-step explanation:

6=2(y+2)

Divide each side by 2

6/2=2/2(y+2)

3 = y+2

Subtract 2 from each side

3-2 = y+2-2

1 = y

7 0

3 years ago

Read 2 more answers

Which expression gives the x-coordinate of the solution of the system?

aalyn [17]

To find the the expression that gives the value of $x$ we are going to proceed as follows:
$5x+3y=-18$ equation (1)
$2x-4y=-28$ equation (1)

Step 1. solve for $y$ in equation (2)
$2x-4y=-28$
$-4y=-28-2x$
$y= \frac{-28-2x}{-4}$
$y=7+ \frac{1}{2} x$ equation (3)

Step 3. Replace equation (3) in equation (1) and solve for $x$
$5x+3y=-18$
$5x+3(7+ \frac{1}{2} x)=-18$
$5x+21+ \frac{3}{2} x=-18$
$\frac{13}{2} x=-39$
$x= \frac{-39(2)}{(13)}$
$x=-6$

We can conclude that the expression that gives the value of $x$ is: $x=-6$

7 0

3 years ago

A cone with a height of 50 meters has a volume of 5400π meters cubed. What is the radius of the cone?

Sergeu [11.5K]

Answer:

Step-by-step explanation:

The volume of a cone has the formula:

$V=\frac{1}{3}\pi r^2 h$

Where

V is the volume

r is the radius

h is the height

Given,

h = 50

V = 5400π

We want the radius, r.

Lets substitute and solve for r:

$V=\frac{1}{3}\pi r^2 h\\5400\pi=\frac{1}{3}\pi r^2(50)\\5400\pi=\frac{50\pi r^2}{3}\\50\pi r^2=16200\pi\\r^2=324\\r=\sqrt{324}\\r=18$

The radius is 18 meters

Correct answer A

7 0

3 years ago