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3 years ago

Solve for x 4(2x-1)= 3x-19

Mathematics

2 answers:

Sophie [7]3 years ago

8 0

X=-3
This is the answer

drek231 [11]3 years ago

7 0

Answer:

x = -3

Step-by-step explanation:

In an equation our aim is to find the value of what we are looking for as well as keeping the equation balanced. For example if we took away 4 only from one side then the equation would change so it's an important rule to keep in mind when solving equations, that you need to keep both sides of the equation the same.

4 ( 2x - 1 ) = 3x - 19

→ Expand the brackets

8x - 4 = 3x - 19

→ Minus 3x from both sides to isolate -19 and bring all the x coefficients to one side

5x - 4 = -19

→ Add -4 to both sides to isolate 5x

5x = -15

→ Divide both sides by 5 to isolate x and therefore find the value of x

x = -3

→ We can substitute x = -3 back into 4 ( 2x - 1 ) = 3x - 19 to see if we have the correct solution, if we end with the same number on both sides then x = -3 is correct.

4 ( 2x - 1 ) = 3x - 19

8x - 4 = 3x - 19

( 8 × -3 ) - 4 = ( 3 × -3 ) - 19

-24 - 4 = - 9 - 19

-28 = -28

So x = -3 is correct

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Distance between 2,-5 and 3,-7

joja [24]

Answer:

√5

Step-by-step explanation:

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4 years ago

Malik is standing outside in the sun. Malik is 72 inches tall, and his shadow is 60

anastassius [24]

Jeremy's height is 67.2 inches

The diagram below represents situation

<h3>Proportion</h3>

Proportion says that two ratios (or fractions) are equal. This a mathematical comparison between numbers.

Therefore, let's establish the proportion in this situation

Malik height / Malik shadow = Jeremy height / Jeremy shadow

Therefore,

72 / 60 = x / 56

cross multiply

72 × 56 = 60x

60x = 4032

divide both sides by 60

x = 4032 / 60

x = 67.2

Therefore, Jeremy's height is 67.2 inches

learn more on proportion here: brainly.com/question/26258657

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2 years ago

The polygons in each pair are similar find the scale factor smaller figure to the larger

Delvig [45]

Answer:

smaller figure/larger figure = ½

Step-by-step explanation:

The scale factor = any of the side length of the smaller figure / the corresponding side length of the larger figure

Side length of smaller figure = 3

Corresponding sides length of larger figure = 6

Scale factor = smaller figure/larger figure = 3/6

Simplify

Scale factor = smaller figure/larger figure = ½

7 0

3 years ago

Which one is a "Associative Property Of Multiplication"

alex41 [277]

Answer:

The answer is D.

Step-by-step explanation:

First, we take the info we know. We know that this of multiplication. That means we can rule out A and E.

Now, we need to take the definition of the associative property. The associative property means that you keep the same numbers, variables, and operations, but you switch the grouping. This means that the answer is D. This is because, on both sides of the equation, we keep the same numbers variables and operations. However, on one side we have 4 grouped with r, and on the other, we have 3 grouped with 4. We switched our grouping but kept the expression. This means that our answer is D.

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3 years ago

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agasfer [191]

Answer:

for the 1st one it is 108.15x

and the 2nd it is 103x

Step-by-step explanation:

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3 years ago