All categories

3 years ago

-3x - 5=16 what does x equal?

Mathematics

2 answers:

alexandr1967 [171]3 years ago

8 0

Answer: -7

Step-by-step explanation:

-3x - 5 = 16 (add 5 to 16)

-3x = 21 (divide by -3)

x = -7

Rina8888 [55]3 years ago

3 0

Answer:

-7

Step-by-step explanation:

-3x-5=16

add 5 to both sides

-3x=21

divide both sides by -3

x=-7

You might be interested in

Determined to find the slope (1,7K) and (-3,5k)

Nadusha1986 [10]

9514 1404 393

Answer:

slope = k/2

Step-by-step explanation:

The slope formula is useful for finding slope.

m = (y2 -y1)/(x2 -x1)

m = (5k -7k)/(-3 -1)

m = -2k/-4

m = k/2

The slope is k/2.

4 0

3 years ago

Find the equation that passes through points A and B

Irina18 [472]

Answer:

Step-by-step explanation:

A(1,7); B(-3,-1); slope m =(-1-7)/-3-1) = -8/-4 = 2

Equation of a line AB is

((y-y1) = m(x-x1)

y - 7 = 2(x-1)

y - 7 = 2x-2

y = 2x + 5

3 0

3 years ago

Read 2 more answers

A scuba diver was studying some fish at -10 feet in the ocean. He dove down another 9 feet each hour after that. If he was down

beks73 [17]

Answer:

27 feet

Step-by-step explanation:

calculation using brain

7 0

3 years ago

Read 2 more answers

Solve the following initial-value problem: (ex+y)dx+(3+x+yey)dy=0, y(0)=1 0=

alex41 [277]

Answer:

$e^x+xy+3y+(y-1)e^y=4$

Step-by-step explanation:

Given that

$(e^x+y)dx+(3+x+ye^y)dy=0$

Here

$M=e^x+y$

$N=3+x+ye^y$

We know that

M dx + N dy=0 will be exact if

$\frac{\partial M}{\partial y}=\frac{\partial N}{\partial x}$

$\frac{\partial M}{\partial y}=1$

$\frac{\partial N}{\partial x}=1$

it means that this is a exact equation.

$\int d\left(e^x+xy+3y+(y-1)e^y\right)=0$

Noe by integrating above equation

$e^x+xy+3y+(y-1)e^y=C$

Given that

x= 0 then y= 1

$e^0+0+3+(1-1)e^1=C$

C=4

So the our final equation will be

$e^x+xy+3y+(y-1)e^y=4$

3 0

3 years ago

38 degrees 2x degrees +6 degrees

ratelena [41]

STEP
1
:
Pulling out like terms

Pull out like factors :

32 - 2x = -2 • (x - 16)

STEP
2
:

Equations which are never true:

2.1 Solve : -2 = 0

This equation has no solution.
A a non-zero constant never equals zero.
Solving a Single Variable Equation:

2.2 Solve : x-16 = 0

Add 16 to both sides of the equation :
x = 16

5 0

3 years ago