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3 years ago

19. 2=5(5z-2)-9(3z-2)

Mathematics

2 answers:

bekas [8.4K]3 years ago

6 0

Answer:

Step-by-step explanation:

2 = 5(5z - 2) - 9(3z - 2)

2 = 5*5z - 5*2 - 9 * 3z - 9 *(-2)

2 = 25z - 10 - 27z + 18

25z - 27z + 18 - 10 = 2

25z - 27z = 2 + 10 - 18

-2z = -6

z = -6/-2

z = 3

Akimi4 [234]3 years ago

4 0

Answer:

$z = 3$

Step-by-step explanation:

Simplify,

$2 = 5(5z - 2) - 9(3z - 2) \\ 2 = (5)(5z) + (5)( - 2) + ( - 9)(3z) + ( - 9)( - 2) \\ 2 = 25z + ( - 10) + ( - 27z) + 18 \\ 2 = 25z + ( - 27z) + ( - 10 + 18)$

Combine like terms,

$2 = ( - 2z) + 8$

Flip the equation,

$- 2z + 8 = 2$

Subsract 8 by both sides

$- 2z + 8( - 8) = 2( - 8) \\ - 2z = - 6$

Divide both sides by - 2,

$- 2z \div - 2 = - 6 \div - 2 \\ z = 3$

Hope this will help you :))

Brainliest would be appreciated :))

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zhannawk [14.2K]

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3 years ago

A box contains 20 miniature golf putt-putt balls; 10 are

stellarik [79]

Answer: The answer is provided below

Step-by-step explanation:

From the question, a box contains 20 miniature golf putt-putt balls out of which 10 are yellow, 6 are red, and the remaining 4 are pink.

The probability of picking a red golf ball will be:

= 6/20 × 100

= 600/20

= 30%

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= 10/20 × 100%

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5 0

2 years ago

Please help this is the last problem I need

tangare [24]

Answer:

$sin 54 = \frac{x}{14}$

Step-by-step explanation:

$sine = \frac{opposite}{hypotenuse}$

Side z is the adjacent, since it is next to the angle you are solving for.

Side x is the opposite, since it is opposite the angle you are solving for.

The side measuring 14 is the hypotenuse, since it is across from the right angle.

$sin 54 = \frac{x}{14}$

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2 years ago

How many integers between 100 and 1000 have both 15 and 18 as factors?

Zanzabum

The numbers 180, 270, 360, 450, 540, 630, 720, 810, and 900 are the integers between 100 and 1000 that have both 15 and 18 as a factor.

<h3>What is an integer?</h3>

it is defined as the whole number it can be a negative whole number or a positive whole number for an example: 2, 4, 1, -8, 0, etc.

To find the how many integers between 100 and 1000 have both 15 and 18 as factors.

We must calculate the LCM of 15 and 18

The LCM for 15 and 18 is 90

Now the 90's multiple:

90, 180, 270, 360, 450, 540, 630, 720, 810, 900, 1080

These numbers are factors of 15 and 18 also.

The number which lies between 100 and 1000 are:

180, 270, 360, 450, 540, 630, 720, 810, 900

Thus, the numbers 180, 270, 360, 450, 540, 630, 720, 810, and 900 are the integers between 100 and 1000 that have both 15 and 18 as a factor.

Learn more about the integers here:

here:brainly.com/question/15276410

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4 0

2 years ago

2 1/2 +2/3 <br> Thank you!

MArishka [77]

Answer:

3 1/6

Step-by-step explanation:

2 1/2 + 2/3 = 2 3/6 + 4/6. add 3 and 4, you get 2 7/6. simplify by taking 6 from 7 and add 1 to 2. that leaves you with the answer

6 0

3 years ago