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vladimir2022 [97]
3 years ago
14

What is the solution to this equation? −1/3(x+1 1/2)=−3 1/4

Mathematics
2 answers:
dusya [7]3 years ago
7 0
X=235/12 this is the answer
Amiraneli [1.4K]3 years ago
3 0

Answer:

x = 8.25

Step-by-step explanation:

-1/3 (x+1 ½) = -3 1/4

Multiply -1/3 into the parenthesis

-1/3x - 3/6 = -3 1/4 --> -1/3x - 1/2 = -3 1/4

Add (1/2) to the other side

-1/3x - 1/2 = -3 1/4

       + 1/2   + 1/2 ( 2 / 4 )

-1/3x = -2 3/4

Divide -1/3 into -2 3/4

-1 / 3 ÷ - 11 / 4

- 3 / 1 * - 11 / 4 = 33 / 4 = 8.25

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Emily has 8 coins in her purse totaling 50 cents. The only kinds of coins she has are nickels and dimes. How many nickels does E
miskamm [114]

Linear equation are the equation which has the power of the unknown variable is 1. The Emily have total 2 number of dimes coin and total 6 number of nickels coin.

<h3>Given information-</h3>

Emily has 8 coins in her purse totaling 50 cents

The only kinds of coins she has are nickels and dimes.

<h3>Nickel</h3>

A nickel is a coin which has the value equal to the 5 cents.

<h3>Dimes</h3>

A dimes is a coin which has the value equal to the 10 cents.

Suppose the number of nickel coin is <em>x </em>and the number of dimes coin is <em>y.</em>

As total coins are 8 . Thus,

x+y=8      

x=8-y                  ......equation 1

As the total value of the cents is 50 and nickel is equal to the 5 cents whereas the dimes is equal to the 10 cents. Thus,

5x+10y=50        

Put the value of the <em>x</em> from the equation 1 in the above equation.

\begin{aligned}5(8-y)+10y &=50\\40-5y+10y &=50\\5y &=50-40\\y&=\dfrac{10}{5} \\y&=2\end

Thus Emily have total 2 number of dimes coin.

Put this value of y in equation 1 we get,

x=8-2\\x=6

Thus  Emily have total 6 number of nickels coin.

Hence the Emily have total 2 number of dimes coin and total 6 number of nickels coin.

Learn more about the coin based problems here;

brainly.com/question/10482015

5 0
2 years ago
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Marc has 45 Cds in his collection, and Corinna has 61. If Marc buys 4 new CDs each month and Corinna buys 2 new CDs each month,
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After 8 months they both will have 77 CD's

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Which table of ordered pairs represents a proportional relationship?
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I really don’t know
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If t(d) = 3d + 1 and d(n) = 4n + 2, what is t(d(n)) when n = 5​
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Answer:

67

Step-by-step explanation:

d(n) = 4n + 2

= 4(5) + 2

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t(d(n)) = 3(22) + 1

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