All categories

3 years ago

If y + 3y + 5y = -18, then what is the value of y?

Mathematics

2 answers:

Y_Kistochka [10]3 years ago

5 0

Answer:

y = -2

Step-by-step explanation:

Add up the coefficients of the three y terms:

(1 + 3 + 5)y = -18.

Then (9)y = -18.

Dividing both sides b y 9, we get:

y = -18/9, or y = -2.

kvasek [131]3 years ago

3 0

Answer:

y=-2

Step-by-step explanation:

In order to find out the value of y, we have to isolate the y. In order to do that, we first have to combine all like terms and we do that by adding the numbers with variables together.

1y+3y+5y=9y

9y=-18

Now we have to get the y by itself so we divide 9 on both sides of the equation because once we do that, we can cancel out the 9.

9/9=1 -18/9=-2

So the answer is y=-2.

You might be interested in

Finding area of shaded sectors.

tekilochka [14]

Answer:

69.81 sq. m. (rounded to 2 decimal places)

Step-by-step explanation:

The sector of a circle is "part" or "portion" of a circle. The formula for the area of a sector is:

$A=\frac{\theta}{360}*\pi r^2$

Where

$\theta$ is the central angle

r is the radius

Given the figure, the arc is given as 80 degrees, but not the central angle of the shaded sector. But from geometry we know that the central angle and the intercepted arc have the same measure. So we can say:

$\theta = 80$

Also, the radius of the circle shown is 10 meters, so

r = 10

Now, we substitute in formula and find our answer:

$A=\frac{\theta}{360}*\pi r^2\\A=\frac{80}{360}*\pi (10)^2\\A=\frac{2}{9}*100\pi\\A=\frac{200\pi}{9}\\A=69.81$

Thus,

The area of the shaded sector is 69.81 sq. meters.

5 0

3 years ago

I need help I did most of them but not sure if there right if you could tell me that would be great. Also can you help me with 9

Andrej [43]

Explanation:

In the given identified the following with reasons.

1. Given

2. Corresponding Angles postulate

3. Reflexive property of congruence

4. AA similarity postulate.

5. Triangle proportionate

6. Cross multiply

7. Distributive property of equality

8. Subtraction property of equality

9. Division property of equality

10. Prove

8 0

3 years ago

Write 42 divided by 558 make sure to show work

nadezda [96]

42/558 is what you write to show the expression 42 divided by 558

6 0

3 years ago

Read 2 more answers

On a car trip , the number of miles driven , m , is proportional to the number of gallons of gas used , g , as shown in the tabl

FrozenT [24]

Answer:

m = 32g

Step-by-step explanation:

The proportion between m and g can be written ...

m = kg

where k is the constant of proportionality.

We can find its value by dividing by g:

k = m/g

Using any pair of corresponding values from the table, we find ...

k = 64/2 = 32

The relationship between m and g can be expressed by the equation ...

m = 32g

3 0

2 years ago

Graph the equation (please hurry)

KatRina [158]

Answer:

I would start at ( -2, -0) and make a line

Step-by-step explanation:

4 0

2 years ago