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3 years ago

What does x equal? 21 x=177

Mathematics

1 answer:

SCORPION-xisa [38]3 years ago

6 0

Answer:

We think you wrote:

This deals with linear equations with one unknown.

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Step by Step Solution

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Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

x-9/8-(21)=0

Step by step solution :

STEP

Simplify —

Equation at the end of step

(x - —) - 21 = 0

STEP

Rewriting the whole as an Equivalent Fraction

2.1 Subtracting a fraction from a whole

Rewrite the whole as a fraction using 8 as the denominator :

x x • 8

x = — = —————

1 8

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding fractions that have a common denominator :

2.2 Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

x • 8 - (9) 8x - 9

——————————— = ——————

8 8

Equation at the end of step

(8x - 9)

———————— - 21 = 0

STEP

Rewriting the whole as an Equivalent Fraction :

3.1 Subtracting a whole from a fraction

Rewrite the whole as a fraction using 8 as the denominator :

21 21 • 8

21 = —— = ——————

1 8

Adding fractions that have a common denominator :

3.2 Adding up the two equivalent fractions

(8x-9) - (21 • 8) 8x - 177

————————————————— = ————————

8 8

Equation at the end of step

8x - 177

———————— = 0

STEP

When a fraction equals zero :

4.1 When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.

Here's how:

8x-177

—————— • 8 = 0 • 8

Now, on the left hand side, the 8 cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

8x-177 = 0

Solving a Single Variable Equation:

4.2 Solve : 8x-177 = 0

Add 177 to both sides of the equation :

8x = 177

Divide both sides of the equation by 8:

x = 177/8 = 22.125

<h3>One solution was found :</h3><h2> x = 177/8 = 22.125</h2>

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Answer:

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Step-by-step explanation:

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In which

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95% confidence level

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4 years ago

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Answer:

Step-by-step explanation:

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Read 2 more answers

there are two bags containing only blue and black marbles bag a has 4 blue marbles and 6 black marbles. Bag b has 6 blue marbles

Elena L [17]

Answer

Arranged from least likely to most likely

- Event 4. choosing a yellow marble from bag B

- Event 3. choosing a blue marble from bag B

- Event 4 choosing a blue marble from bag A

Explanation

Bag A

4 blue marbles and 6 black marbles.

Bag B

6 blue marbles and 14 black marbles.

So, to arrange given cases in the order of least likely to most likely, we need to find the probabilities of each of them.

Event 1. choosing a blue or black marble from bag B

This would entail picking bag B first, then picking from either blue or black ball first. Since all the balls in the bag are either black. So, the probability is given as

Probability

= (Probability of picking one type of bag) (Probabiliy that the ball is either blue or black)

= (0.5) (1)

= 0.5

Event 2. choosing a blue marble from bag A

Probability

= (Probability of picking bag A) (Probabiliy that the ball is blue from A)

= (0.5) (4/10)

= (0.5) (0.4)

= 0.2

Event 3. choosing a blue marble from bag B

Probability

= (Probability of picking bag B) (Probabiliy that the ball is blue from B)

= (0.5) (6/20)

= (0.5) (0.3)

= 0.15

Event 4. choosing a yellow marble from bag B

Probabiliity

= ((Probability of picking bag B) (Probabiliy that the ball is yellowfrom B)

= (0.5) (0/20)

= 0.5 (0)

= 0

0 < 0.15 < 2 < 0.5

Hope this Helps!!!

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1 year ago