All categories

2 years ago

-3y-2=7 what is the value of y

Mathematics

2 answers:

tiny-mole [99]2 years ago

6 0

Answer:

y = -3

Step-by-step explanation:

Add 2 to each side to isolate the -3y. Doing this leaves you with -3y=9. You then divide each side leaving you with y = -3

babymother [125]2 years ago

4 0

Answer:

The equation has one solution at which y = -3.

Step-by-step explanation:

To find the value of y, we need to isolate it from the rest of the equation.

Add 2 to both sides of the equation.
Divide by -3 on both sides of the equation.
Simplify the equation if necessary.

$\displaystyle{-3y-2=7}\\\\-3y = 9\\\\\bold{y = -3}$

We can check to make sure that y = -3 by substitution.

$\displaystyle{-3(-3)-2 = 7}\\\\9-2=7\\\\7= 7 \ \checkmark$

Because we got a true statement, we can determine that y = -3.

You might be interested in

What's a parabola? What's a hyperbola?

Alborosie

Parabola: is a two-dimensional, mirror-symmetrical curve, which is approximately U-shaped when oriented as shown in the diagram below, but which can be in any orientation in its plane. It fits any of several superficially different mathematical descriptions which can all be proved to define curves of exactly the same shape.

Hyperbola:
In mathematics, a hyperbola (plural hyperbolas or hyperbolae) is a type of smooth curve lying in a plane, defined by its geometric properties or by equations for which it is the solution set. A hyperbola has two pieces, called connected components or branches, that are mirror images of each other and resemble two infinite bows

Hope this Helps

6 0

2 years ago

Read 2 more answers

Five less than twice a number

a_sh-v [17]

2x-5 is the answer to the question

7 0

2 years ago

Patrick works a 40-hour week at $10.70 an hour with time and a half for overtime. Last week he worked 45 hours. What were his to

MA_775_DIABLO [31]

D. $
481.15 there you go

3 0

3 years ago

The sum of two consecutive numbers is always<br> a multiple of 3.<br> True or false?

Volgvan

The correct answer is true

4 0

2 years ago

Ricardo and John start swimming from the same location. Ricardo starts 15 seconds before John and swims at a rate of 3 feet per

Margarita [4]

Answer:

t = (t₁ · vr)/ (vj - vr) = 45 seconds

Step-by-step explanation:

Given:

Initial time from Ricardo t₁ = 15 seconds, Ricardo's velocity (speed) vr = 3 ft/s,

John's velocity (speed) vj = 4 ft/s

Requested time when John catch Ricardo t = ?

During 15 seconds, Ricardo moved away

S = vr · t₁ = 3 ft/s · 15 s = 45 feet.

From that moment, the same time runs for both of them

Ricardo's path is S₁ = vr · t and John's path is S₂ = vj · t

S + S₁ = S₂ => S = S₂ - S₁ => 45 = vj · t - vr · t

When we draw t we get:

t ( vj - vr) = 45 t = 45 / (vj - vr) = 45 / (4 - 3) = 45 / 1 = 45 seconds

t = 45 seconds

S₁ = vr · t = 3 · 45 = 135 ft

S₂ = vj · t = 4 · 45 = 180 ft

God with you!!!

6 0

2 years ago