PLEASE HELP!

Mathematics

2 answers:

zysi [14]4 years ago

5 0

Answer: 77 inches.

Step-by-step explanation:

You know that this map uses this scale:

$1in=3mi$

This means that 1 inch in the map represents 3 miles.

In this case, you know that the actual distance between City A and City B is 231 miles, then, to find the distance between the cities on the map, you can set up de following proportion:

$\frac{1in}{3mi}=\frac{x}{231mi}$

Now, you need to solve for "x":

$(231mi)(\frac{1in}{3mi})=x\\\\x=77in$

Kay [80]4 years ago

4 0

Answer:

77 inches

Step-by-step explanation:

Given

1 inch = 3 miles in map

We are also given the actual distance between City A and City B = 231 miles.

In order to get the distance in inches = Distance between City A and City B in miles/ 3

We are dividing the distance by 3 to get the distance in inches.

So,

Distance on map = 231/3

= 77 inches

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If a quadratic equation has a real root, what do you know about the other roots of the equation? Explain.

notsponge [240]

Answer:

A Quadratic Equation can have upto 2 roots maximum. So,if one of the roots is a Real number, there are following two possibilities:

1) The other root is also a real number, but a different number

2) Its a repeated root, so the other root is the same number.

The other root cannot be a complex number as its not possible for one root to be real and other to be complex. Either no root will be complex or both will be complex roots.

Following are 3 possibilities for the roots of a quadratic equation: