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alexdok [17]
3 years ago
6

A map has a scale of 6 in. = 18 mi. If you measured the distance between two cities to be 26 in. on the map, how many miles woul

d it actually be?
Mathematics
1 answer:
Travka [436]3 years ago
8 0

Answer:

78 mi

Step-by-step explanation:

18/6 = 3

1 in= 3 mi

26×3= 78 mi

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A four-sided polygon has sides that measure 1 cm, 5cm, and 7 cm. (Forth side not given). What is the perimeter?
yaroslaw [1]

Answer:

(13+x)cm

Step-by-step explanation:

Given data

Length of sides

1cm, 5cm, 7cm

Since the shape is four-sided and the fourth side is not given, let the fourth side be x

so

The perimeter of the polygon is

P= 1+5+7+x

P= 13+x

Hence the perimeter of the polygon is

P= (13+x)cm

3 0
3 years ago
There are 3 grams of sodium in 1⁄2 of a liter of soda. How much sodium is in 2⁄3 of a liter of soda?
denis-greek [22]

Answer:

4 grams in 2/3 liter of soda.

3 0
3 years ago
Tim earned $300 in five days. After the first day, he earned $10 more each day than the day before. How much did Tim earn on the
Vika [28.1K]
Use the equation 300⇒5x to find how much tim made each day on average. 
x⇒60   so, Day 1: $60, Day 2: $70 etc.. so the equation 300=5x+10 suffices the problem. 300⇒5x+10 ⇒    290=5x
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So, Tim earned $58 his first day. Hope this helped.
8 0
3 years ago
Read 2 more answers
Find a general solution of y" + 8y' + 16y=0.
Misha Larkins [42]

Answer:

The general solution: C_{1}e^{-4x} + xC_{2}e^{-4x}

Step-by-step explanation:

Differential equation: y'' + 8y' + 16y = 0

We have to find the general solution of the above differential equation.

The auxiliary equation for the above equation can be writtwn as:

m² + 8m +16 = 0

We solve the above equation for m.

(m+4)² = 0

m_{1} = -4, m_{2} = -4

Thus we have repeated roots for the auxiliary equation.

Thus, the general solution will be given by:

y = C_{1}e^{m_{1}x} + xC_{2}e^{m_{2}x}

y = C_{1}e^{-4x} + xC_{2}e^{-4x}

6 0
3 years ago
Solve the formula -8x-3y=-19 for y
Ann [662]

Answer:y = (19 - 8x)/3

Step-by-step explanation:

add 8x to both sides ,

-3y = -19+8x

dividing both sides by -3

y = (19 - 8x)/3

7 0
3 years ago
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