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Viefleur [7K]
2 years ago
9

Diego's age `d` is 5 more than 2 times his sister's age `s`. This situation is represented by the equation `d=2s+5`. If we know

Diego's age, which equation will help us find his sister's age?
Mathematics
1 answer:
lutik1710 [3]2 years ago
4 0

Answer:  s=\dfrac{(d-5)}{2}.

Step-by-step explanation:

Given: d denotes Diego's age while s denotes his sister's age.

The situation is represented by the equation d=2s+5.

To find his sister's age we can write the above equation as s=\dfrac{(d-5)}{2} [we first subtract 5 from both sides and then divide both sides by 2]

Hence, the required equation: s=\dfrac{(d-5)}{2}.

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Answer:

a) distance traveled is 16 miles.

b) distance traveled is 40 miles.

Step-by-step explanation:

Speed is a scalar quantity which describe the rate of distance moved with time.

i.e speed = \frac{distance}{time}

Given that: distance = 2 1/3 miles = \frac{7}{3} miles, time = 3 1/2 minutes = \frac{7}{2} minutes.

Then;

speed = \frac{7}{3} ÷ \frac{7}{2}

          = \frac{7}{3} x \frac{2}{7}

          = \frac{2}{3}

The car's steady speed is 0.67 miles per minute.

a) when the time is 24 minutes, the distance covered can be determine by:

distance = speed x time

              = \frac{2}{3} x 24

              = 16

distance traveled is 16 miles.

b) When the time is 1 hour (60 minutes), the distance traveled can be determined by:

distance = speed x time

              = \frac{2}{3} x 60

              = 40

distance traveled is 40 miles.

5 0
3 years ago
The principal P is borrowed at a simple interest rate r for a period of time t. Find the simple interest owed for the use of the
Natasha_Volkova [10]

Answer:

= $20

Step-by-step explanation:

Simple interest is given by the formula'

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Therefore;

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3 years ago
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lukranit [14]

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-2(x + 3)

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Ierofanga [76]

Answer:

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