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3 years ago

3/4 + 1/3x = 6 Solve for x

Mathematics

2 answers:

n200080 [17]3 years ago

4 0

$\frac{3}{4} + \frac{1}{3}x = 6$

Multiply both sides of the equation by 12

$9 + 4x = 72$

Move constact to the right-hand side and chancge it's sign.

$4x = 72 - 9$

Subtranct the numbers

$4x = 63$

Divide both sides the equation by 4

Solution:

$x = \frac{63}{4}$

Alternate Form:

$x = 15 \frac{3}{4} x = 15.75$

ehidna [41]3 years ago

3 0

Just subtract 3/4 from both sides that divide 1/3 and x to get your answers

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5^2xyz×5^4x^3y^-10z^-12

Leviafan [203]

There is so solution to this problem

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3 years ago

If there are 42 boys and 54 girls in a room, fill out all of the possible

Setler79 [48]

Answer:

21:27 and 14:18

Step-by-step explanation:

We can solve this by using common factors

one of the common factors of 54 and 42 is 3

42/3=14

54/3=18

so one of the ratios is 14:18

another common factor is 2

42/2=21

54/2=27

so another ratio is 21:27

4 0

3 years ago

What expressipn is equivalent to 5/6 divided to 7

Llana [10]

Answer:

its below

Step-by-step explanation:

5/(6*7)=5/(6*7*6*5*4*3*2*1)=1/(6*7*6*4*3*2*1)=1/6048=0.0001653439

3 0

3 years ago

Round 86 to the nearest 10

a_sh-v [17]

Answer:

Step-by-step explanation:

3 0

3 years ago

The average height of students at UH from an SRS of 12 students gave a standard deviation of 2.5 feet. Construct a 95% confidenc

Vanyuwa [196]

Answer:

c. [1.771;4.245] feet

Step-by-step explanation:

Hello!

The variable of interest is

X: height of a student at UH

X~N(μ;σ²)

You have to estimate the population standard deviation using a 95% confidence interval.

The statistic to use for the interval is a student Chi-Square with n-1 degrees of freedom. First you have to calculate the CI for the population variance:

$[\frac{(n-1)S^2}{X^2_{n-1;1-\alpha /2}} ;\frac{(n-1)S^2}{X^2_{n-1;\alpha /2}} ]$

$X^2_{n-1;1-\alpha /2}= X^2_{11;0.975}= 21.920$

$X^2_{n-1;\alpha /2}= X^2_{11;0.025}= 3.816$

n=12

S= 2.5

$[\frac{11*6.25}{21.920} ;\frac{11*6.25}{3.816}} ]$

[3.136; 18.016] feet²

Then you calculate the square root of both limits to get the CI for the population standard deviation:

[√3.136; √18.016]

[1.771;4.245] feet

I hope this helps!

4 0

3 years ago