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3 years ago

1/2 =2x-1/3 HELP PLZZZZZZZZ

Mathematics

2 answers:

uranmaximum [27]3 years ago

5 0

Answer:

$x = \frac{5}{4}$

Step-by-step explanation:

$\frac{2x-1}{3} = \frac{1}{2} \\$

Here cross - multiplying 3 & 2 gives :-

$2(2x-1) = 3$

Solving this further gives :-

$2(2x-1) = 3\\=> 4x-2 = 3\\=>4x = 3+2\\=> 4x=5\\=> x = \frac{5}{4}$

Mila [183]3 years ago

4 0

Answer:

1/3

Step-by-step explanation:

I have already put a answer and I agree with the other answer but, europe2433 DO NOT DELETE THIS this correct and if you deleted it will be saying I am correct and you just want me to not succed, thank you and have a wonderful day.

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Math question need help with substation please?

Juliette [100K]

2 solutions

X= 16

X=49

Step-by-step explanation:

original equation

x-11√x+28 = 0

Isolate

-11√x = -x-28+0

Tidy up

11√x = x+28

Raise both sides to the second power

(11√x)2 = (x+28)2

After squaring

121x = x2+56x+784

Plug in 49 for x

11√(49) = (49)+28

Simplify

11√49 = 77

Solution checks !!

Solution is:

x = 49

Plug in 16 for x

11√(16) = (16)+28

Simplify

11√16 = 44

Solution checks !!

Solution is:

x = 16

3 0

2 years ago

Working together, Candice and Ximena painted a fence in 8 hours. Last year, Ximena painted the fence by herself. The year before

makkiz [27]

Answer: Time taken by Ximena to paint the fence alone = 24 hours

Time taken by Candice to paint the fence alone = 12 hours

Step-by-step explanation:

Let x= Time taken by Ximena to paint the fence alone .

Time taken by Candice to paint the fence alone = x-12

As per given , we have

$\dfrac{1}{x}+\dfrac{1}{x-12}=\dfrac{1}{8}\\\\\Rightarrow\ \dfrac{x-12+x}{x(x-12)}=\dfrac{1}{8}\\\\\Rightarrow\ 8(2x-12)=x^2-12x\\\\\Rightarrow\ 16x-96=x^2-12x\\\\\Rightarrow\ x^2-12x-16x+96=0\\\\\Rightarrow\ x^2-28x+96=0\\\\\Rightarrow\ x^2-4x-24x+96=0\\\\\Rightarrow\ x(x-4)-24(x-4)=0\\\\\Rightarrow\ (x-4)(x-24)=0\\\\\Rightarrow x=4, 24$

if x= 4

Time taken by Ximena = 4 hours

Time taken by Candice = 4-12 hours =-8 hours which is not possible. (time cannot be negative)

Therefore, x= 24

Such that

Time taken by Ximena to paint the fence alone = 24 hours

Time taken by Candice to paint the fence alone = 24-12=12 hours

3 0

2 years ago

Math experts please help!!!!

Shalnov [3]

Answer:

x is 72 degrees

Step-by-step explanation:

To find the measure of x, you need to know the sum of the interior angles of the pentagon.

Sum = (n - 2) x 180

Sum = (5 - 2) x 180

Sum = 3 x 180

Sum = 540

Now divide this by 5, the number of sides

540/5 = 108 degrees for each angle of the pentagon.

To find the measure of x, look at the opposite angle, which is 108 degrees

180 - 108 = 72

The measure of angle x is 72 degrees.

If this answer is correct, please make me Brainliest!

5 0

3 years ago

Mrs. Nestler enjoys listening to classical music. She has the following audio CDs by her favorite composers in her collection: 4

ivolga24 [154]

Answer:

10.55% probability

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The order in which the CDs are chosen is not important. So we use the combinations formula to solve this question.

1 Bach CD, from a set of 4.

1 Beethoven CD, from a set of 6.

1 Brahms CD, from a set of 3.

1 Handel CD, from a set of 2.

So, D=144

4 CDs from a set of 4+6+3+2 = 15.

So, T= 1365

p= D/T= 144/1365 = 0.1055

10.55% probability that she will choose one by each composer

4 0

2 years ago

6b-9=-87 what is the answer

maw [93]

Answer:

Answer is below

Step-by-step explanation:

Add 9 to both sides.

$6b-9+9=-87+9\\6b=-78$

Divide both sides by 6

$\frac{6b}{6} =\frac{-78}{6} \\b=-13$

3 0

2 years ago

Read 2 more answers