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butalik [34]
3 years ago
10

9x^2 - 42x + 49 NEED HELP SOLVING QUADDRATIC EQUATION

Mathematics
1 answer:
masya89 [10]3 years ago
6 0

Answer:

x = 7/3

Step-by-step explanation:

Factors of 9 are:

3x3

9x1

Factors of 49 are:

7x7

49x1

Only 3x3 and 7x7 equal 42 when you expand it out                                            (3x - 7)(3x - 7) = 0

x = 7/3

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solve the equation 5 over 4 minus 1 over x minus 2 equals -4 over 4x minus. use complete sentences to explain how you solved the
ehidna [41]
Let's translate your words into numbers and fractions. So it's
5/4 - 1/x - 2 = -4/-4.
Let's Simplify it first by eliminating -4/-4, the answer will be 1 since negative divided by negative is positive and 4 divided by 4 is 1.

5/4 - 1/x - 2 = 1

Then Get the GCF of the equation which is 4x.
Then divide the whole equation by 4x and it would be, 

<span><u>5/4 - 1/x - 2 = 1
</u></span>        4x

Then it will look like this, 5x-8x-4 = 4x
Then transpose, 5x - 8x - 4x = 4
Simplify by deducting the left side. -7x = 4
Then divide both sides by -7.
Then the final answer would be x = -4/7 
4 0
4 years ago
A pair of pants costs twice as much as a shirt. The total cost of 1 pair of pants and 1 shirt is $18 . If s represents the cost
dolphi86 [110]

Let the price of 1 shirt be represented by = s

A pair of pants costs twice as much as a shirt, then the cost of pants is = 2s

The total cost of 1 pair of pants and 1 shirt is $18 , means : s+2s=18

Solving this we get,                            

3s=18

s=6

So, the price of 1 shirt is $6 and price of 1 pair of pants is = 2s = 2*6 = $12.

8 0
4 years ago
Read 2 more answers
Marcus is 5 524 feet tall. Ben is 5 516 feet tall. Which of the two boys is taller? Give your answer and complete the justificat
Sedbober [7]

Complete Question

Marcus is 5 5/24 feet tall. Ben is 5 5/16 feet tall. Which of the two boys is taller? Give your answer and complete the justification using decimal representations of the mixed numbers. Round decimal entries to four decimal places. (select) is taller because > .

Answer:

Of the two boys, Ben is taller

Step-by-step explanation:

For Marcus

Converting to decimal

5 5/24 feet tall = 5.2083 feet tall

For Ben

5 5/16 feet tall = 5.3125 feet tall

Hence, Of the two boys, Ben is taller

4 0
3 years ago
86) If 3 glasses of lemonade can be made from 8 lemons, exactly how
kkurt [141]

Answer:

37 and a 1/3

Step-by-step explanation:

3 glasses of lemonade=8lemons

1 glass of lemonade=2.66666667

14 glasses=37.33

you cannot have 37 and a 1/3

please give me brainliest!!

6 0
3 years ago
Which number is closest to sqrt(10). A)3.1 B)4.3 C)3.6 D)2.8
Aleonysh [2.5K]

Answer:

A

Step-by-step explanation:

sqrt(10)=3.2 (rounded to the nearest tenth). 3.2 is closer to 3.1 than 3.6 .

8 0
3 years ago
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