3 years ago

9 – 2x = 19 What is x

Mathematics

2 answers:

iren2701 [21]3 years ago

6 0

9-2x=19

or,-2x=19-9

or,-2x=10

or,x=10/-2

therefore,

x=-5

castortr0y [4]3 years ago

3 0

Answer:

x=-5

Step-by-step explanation:

subtract 9 on both sides

9-2x=19

-9 -9

-2x=10

x=-5

;)

You might be interested in

Find the new balance if $875 is deposited and $316 is withdrawn from a balance of $2,056.

cestrela7 [59]

Hello!

Answer:
$2,615
Explanation:
The balance of $ 2,056 is a positive number,
The deposits of $ 875 is a positive number.
The withdrawal of $ 316 is a negative number.

5 0

3 years ago

Newton’s law of cooling states that the temperature of an object changes at a rate proportionalto the difference between the tem

Verizon [17]

Answer:

$\frac{dT}{dt} = -0.05\;min^{-1} (T-70\ºF)$

Step-by-step explanation:

Hi!

Lets call:

T = temprature of the object

T₀ = temperature of surroundings

t = time

The rate of change of T is its derivative with respecto to time. If T > T₀, the object looses heat, so T decreases. Then, being k > 0:

$\frac{dT}{dt} = -k(T-T_0) \\$

In this case T₀ = 70ºF and k = 0.05/min. Then the differential equation is:

$\frac{dT}{dt} = -0.05\;min^{-1} (T-70\ºF)$

3 0

3 years ago

Hiya answer this plz

chubhunter [2.5K]

Yep, the answer is definitely 13

6 0

2 years ago

What is the diameter of the circle?

Hatshy [7]

Hello!

The circumference is the diameter multiplied by pi. To find the diameter we will divide the circumference by pi (3.14).

1,133.54/3.14=361

361 is the diameter of the circle.

I hope this helps!

5 0

2 years ago

Read 2 more answers

The matrix method is being used to solve the system of equations x + 2y = 4 and 3x - y = 6.

Ira Lisetskai [31]

Answer: b) multiply row 1 by -3 and add the result to row 2

Step-by-step explanation:

8 0

2 years ago