All categories

3 years ago

How do you cross multiply ?

Mathematics

2 answers:

NISA [10]3 years ago

7 0

Answer:

Cross multiplying is literally what you do multiplying diagonally.

Step-by-step explanation:

Here you would multiply 12 by 100% and x by 10.

We convert the percents into decimals first.

So 12 * 1 = 12 and x * 0.1 = x/10

So x/10 = 12

Then we multiply each side by 10.

x = 120.

ehidna [41]3 years ago

3 0

Multiply the numerator of the left-hand fraction by the denominator of the right-hand fraction. ...

Multiply the numerator of the right-hand fraction by the denominator of the left-hand fraction. ...

Set the two products equal to each other. ...

Solve for the variable.

You might be interested in

Using elimination method

bogdanovich [222]

Answer:

The value of x is 2 and y is (-5)

Step-by-step explanation:

<h3>Given;</h3>

-7x + y = – 19
-2x + 3y = – 19

The value of x and y

<h3>By Using Elimination Method;</h3>

First name the equation

-7x + y = – 19 ...(1)
-2x + 3y = – 19 ...(2)

Now, Multiply equation (1) by 3 we get,

3 × (-7x + y = – 19)

-21x + 3y = – 57

Now, Eliminate

-21x + 3y = – 57

-2x + 3y = – 19

+ – +

-19x = -38

x = -38/-19

x = 2

Now, Put the value of x in equation (2) we get the value of y.

-7x + y = – 19

-7(2) + y = – 19

-14 + y = -19

-14 + 14 + y = -19 + 14

y = -5

Thus, The value of x is (-5) and the value of y is 2.

<h3>For Verification;</h3>

-7x + y = – 19

-7(2) + (-5) = – 19

-14 – 5 = – 19

-19 = -19

-2x + 3y = – 19

-2(2) + 3(-5) = – 19

-4 – 15 = – 19

-19 = -19

Here, L.H.S = R.H.S

Hence Verified!

-TheUnknownScientist 72

4 0

3 years ago

UICHL Idlic 3_21 x 28 x= What does x equal

Advocard [28]

Answer:

this is not a real math equation.

Step-by-step explanation:

6 0

3 years ago

Number 8 is confusing

suter [353]

A landscaper is creating a rectangular flower bed such that the width is half of the length . the area of the flower bed is 34 square feet . write and solve the equation determine the width of the flower bed , to nearest tenth of floor .

Answer :

it says that width is half the length . which also implies that length is double the width . as we shift the 2 from denominator , it gets multiply on RHS

let the length be 2x

and

width be = x

length × breadth = 34

2x × x = 34

2x^2 = 34

${x} = \sqrt{34}$

x = width = 5.8309518948

7 0

3 years ago

5 plus 2 minus 7 plus 4

Yakvenalex [24]

Answer:

5+2=7-7+4=4 =4 the answer is 4

Step-by-step explanation:

do not cheat 1st grader

5 0

3 years ago

Read 2 more answers

If there is a 24 foot board cut into 2 pieces and one piece is 4 times longer than the other what are the lengths of each piece

erik [133]

First set up an equation as your approach. I will use the equation x+4x=24 because that way you are saying that something pluse itself times 4 equals 24 which is what you want.

simplify the equation

5x=24

x=24/5

So you know onw piece will be 24/5 of a foot and the ither qould be that times 4 so 96/24 of a foot. In decimals it would be 4.8 and 19.2

3 0

3 years ago

How do you cross multiply ?​

How do you cross multiply ?