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avanturin [10]
3 years ago
5

Cesar bought lunch at school. He had a sandwich and a drink that cost ​$12. His drink cost ​$3.50. Solve the equation 12=s+3.50

to find the cost of ​'s ​sandwich, s.
Mathematics
1 answer:
8_murik_8 [283]3 years ago
8 0

Answer:

$8.50

Step-by-step explanation:

          12=s+3.50

     -3.50    -3.50

       8.50=s

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Find the annual rate of interest. Principal = 4600 rupees, Period = 5 years, Total amount = 6440 rupees, Annual rate of interest
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The annual rate of interest per year is 8%

<u>Solution:</u>

Given:- Principal (p) = 4600 rupees, Time –Period (t) = 5 years, Total amount(A) = 6440 rupees

First we will calculate the Interest and then using formula of simple interest we will calculate the rate of interest

Interest = Amount – Principal

Interest = 6440  – 4600 = 1840

Now using the formula of simple Interest and on putting values we get,

\text {Simple Interest }=\frac{P \times R \times T}{100}

Where "P" is the principal and "R" is the rate of interest per annum and "T" is the time period

1840=\frac{4600 \times R \times 5}{100}

\begin{aligned} \mathrm{R} &=\frac{1840 \times 100}{4600 \times 5} \\\\ \mathrm{R} &=\frac{1840}{230} \\\\ \mathrm{R} &=8 \% \end{aligned}

Hence, the required rate of interest per year is 8%

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3 years ago
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REY [17]
The answer would be 1.75
6 0
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What are the solutions of x3&gt;−1 ? Graph the solutions.
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Colton earns $7 per hour plus $1.50 for each pizza delivery. The expression 7h + 1.50d can be used to find the total earings aft
Rina8888 [55]
Since the expression 7h + 1.50d can be used to find the total earnings. We just need to substitute the given data to the expression to solve the problem.

7(15) + 1.50(8)
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Step-by-step explanation:

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8 0
3 years ago
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