All categories

3 years ago

What is the solution to this question 5x=140

Mathematics

2 answers:

yarga [219]3 years ago

8 0

Divide 140 by 5 = 28
The answer is 28

almond37 [142]3 years ago

7 0

Answer:

5x=140

x = 140/5

x = 28

You might be interested in

You are a contractor and charge $45 for a site visit plus an additional $24 per hour for each hour you spend working at the site

o-na [289]

So lemme ...
45+(24x)=h

I feel this is the best I can do with the given information ... hope this helps

5 0

3 years ago

Is the statement "Two matrices are row equivalent if they have the same number of rows" true or false? Explain. A. True, because

vlabodo [156]

Answer: The answer is (C).

Step-by-step explanation: The given statement is - "Two matrices are row equivalent if they have the same number of rows". We are to explain whether the statement is true or false.

What are row equivalent matrices? The answer to this question is -

Two matrices are said to be row equivalent if one of the matrices can be obtained from the other by applying a number of elementary row operations. Or, we can say two matrices of same order are row equivalent if they have same row space.

Thus, the correct option is (C).

7 0

4 years ago

How to write 8.517 in word and expanded form

Makovka662 [10]

(8*1) + (5*0.1) + (1*0.01) + (7*0.001).

8.517 in word form is eight and five hundred seventeen thousandths.

8 0

3 years ago

Solve the following system using the substitution method. Enter your answer as an ordered pair in the form (x, y)(x,y).

slamgirl [31]

The value of ordered pair of (x,y) is (-2, -3)

<h3>How to solve the equation by substitution method ? </h3>

x - 5y = 13

4x - 3y = 1

Solve the equation for x

x - 5y = 13

Move '5y' to R.H.S and change it's sign

x=13+5y

Substitute the given value of X into the equation

4x - 3y = 1

4(13+5y)-3y = 1

Solve the equation for y

distribute 4 through the parentheses

52+20y -3y =1

Collect like terms

52+17y = 1

Move constant to R.H.S and change it's sign

17y = 1 - 52

Calculate

17y = - 51

Divide both sides of the equation by 17

17y/17 = -51/17

Calculate

y = -3

Now, substitute the given value of y into the equation

x = 13 + 5y

x= =13+5x(-3)

Solve the equation for x

Multiply the numbers

= 13 - 15

Calculate the difference

= -2

The possible solution of the system is the ordered pair

( x , y )

( x , y ) = ( - 2 , - 3 )

-----------------------------------------------------------------------

Check if the given ordered pair is the solution of the system of equation

-2-5×(-3)=15

4×(-2)-3×(-3)=1

Simplify the equalities

13 = 13

1=1

Since all of the equalities are true, the ordered pair is the solution of the system

( x , y ) = ( - 2 , - 3 )

Therefore the value of ordered pair of (x,y) is (-2, -3)

The complete question is : Solve the system by substitution. x−5y=13 4x−3y=1 Enter your answer as an ordered pair (x,y).

To learn more about substitution method refer to :

brainly.com/question/26094713

#SPJ1

4 0

1 year ago

Help me please and thanks

leva [86]

Answer:

A. (1, -4)

Step-by-step explanation:

You can try the answers to see which works. (The first one does.)

Or, you can solve the equations algebraically. Equating y-values works well here:

2x -6 = -2x -2

4x = 4 . . . . . . . add 2x+6 to both sides; next divide by 4

x = 1 . . . . . . . . shows you selection A is correct

___

A graphing calculator can show you the point of intersection. Perhaps this is the way to go, since the unit seems to be on graphing systems of equations. Both of these equations are in slope-intercept form (y=mx+b), so are easily graphed by starting from the y-intercept (b) and using the slope (m=rise/run) to find another point on the line.

3 0

3 years ago