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3 years ago

The value of x in the expression 2x/3 - 7 = 5 is A---8 B---24 C---18 D---36

Mathematics

2 answers:

marusya05 [52]3 years ago

5 0

$\\ \sf\longmapsto \dfrac{2x}{3}-7=5$

$\\ \sf\longmapsto \dfrac{2x-21}{3}=5$

$\\ \sf\longmapsto 2x-21=5(3)$

$\\ \sf\longmapsto 2x-21=15$

$\\ \sf\longmapsto 2x=15+21$

$\\ \sf\longmapsto 2x=36$

$\\ \sf\longmapsto x=\dfrac{36}{2}$

$\\ \sf\longmapsto x=18$

raketka [301]3 years ago

3 0

Answer:

C. 18

Step-by-step explanation:

2x/3 - 7 = 5
2x/3 = 5 + 7
2x/3 = 12
2x = 3*12
2x = 36
x = 36/2
x = 18

Correct choice is C

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4 years ago

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Jlenok [28]

The easiest way to solve this comparison without any unusual comparisons is to find a common denominator for the two fractions.

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3 years ago

Find the LCM of n^3 t^2 and nt^4. A) n 4t^6 B) n 3t^6 C) n 3t^4 D) nt^2

patriot [66]

Answer:

The correct option is C.

Step-by-step explanation:

The least common multiple (LCM) of any two numbers is the smallest number that they both divide evenly into.

The given terms are $n^3t^2$ and $nt^4$ .

The factored form of each term is

$n^3t^2=n\times n\times n\times t\times t$

$nt^4=n\times t\times t\times t\times t$

To find the LCM of given numbers, multiply all factors of both terms and common factors of both terms are multiplied once.

$LCM(n^3t^2,nt^4)=n\times n\times n\times t\times t\times t\times t$

$LCM(n^3t^2,nt^4)=n^3t^4$

The LCM of given terms is $n^3t^4$ . Therefore the correct option is C.

8 0

3 years ago

Read 2 more answers

What is the probability of getting either a sum of 5 or at least one 5 in the roll of a pair of dice?

maria [59]

In a throw of 2 fair dice, there are 6*6=36 equiprobability outcomes.

To get a sum of 5, there are 4 ways, (1,4),(2,3),(3,2),(4,1) with probability of 4/36=1/9

To get at least one 5, there are 6+6-1=11 outcomes (note (5,5) has been counted in both, so subtracted from sum). The probability is 11/36

Since the two events are mutually exclusive (once we have a five, the sum can no longer be 5), we can add the probabilities to get the probability of one event or the other.

P(sum of 5 OR at least one 5)=1/9+11/36=4/36+11/36=15/36=5/9

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4 years ago

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olga2289 [7]

Answer:

The slope-intercept form is y=mx+b y = m x + b , where m m is the slope and b b is the y-intercept. Subtract 2x 2 x from both sides of the equation. Divide each term by −6 - 6 and simplify. Divide each term in −6y=12−2x - 6 y = 12 - 2 x by −6 - 6 .

Step-by-step explanation:

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2 years ago

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