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3 years ago

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Sergeu [11.5K]3 years ago

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Answer:

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Step-by-step explanation:

did anyone ask

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The scale on the map says that 1.5 cm represents 40 miles. On the map the measurement between Nashville, TN and Atlanta, GA is 1

Anna11 [10]

Divide 12 by 1.5 so you have a number you can directly multiple with 40.
12/1.5 = 8
The multiple 8 by 40 to get the number of miles.
8(40) = 320

5 0

3 years ago

Abby can buy an 8-pound bag of dog food for $7.40 or a 4-pound bag of the same dog food for $5.50. Which is the better buy.

kumpel [21]

8 pound bag for 7.40 is the better buy

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3 years ago

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Which statements about opposites are true?

Sloan [31]

9514 1404 393

Answer:

A, B, D

Step-by-step explanation:

The "opposite" of a number is that number with its sign changed.

__

The opposite of zero is zero.
A number and its opposite are located the same distance from zero on a number line.
The opposite of a negative number is always a positive number.

7 0

3 years ago

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Question 8 (5 points)<br> Simplify (tanx- secx) (tanx+ secx).<br> 1 <br> -1<br> sec^2xtan^2x<br> 0

Bond [772]

Answer:

-1.

Step-by-step explanation:

(tanx- secx) (tanx+ secx).

= tan^2 x + tanx sec x- tanx sec x - sec^2x

= tan^2 x - sec^2 x.

But sec^2 x = 1 + tan^2 x

so tan^2 x - sec^2 x = -1

4 0

3 years ago

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Write the quadratic equation that has roots -1-rt2/3 and -1+rt2/3 if its coefficient with x^2 is equal to 1

weeeeeb [17]

The equation of the quadratic function is f(x) = x²+ 2/3x - 1/9

<h3>How to determine the quadratic equation?</h3>

From the question, the given parameters are:

Roots = (-1 - √2)/3 and (-1 + √2)/3

The quadratic equation is then calculated as

f(x) = The products of (x - roots)

Substitute the known values in the above equation

So, we have the following equation

$f(x) = (x - \frac{-1-\sqrt{2}}{3})(x - \frac{-1+\sqrt{2}}{3})$

This gives

$f(x) = (x + \frac{1+\sqrt{2}}{3})(x + \frac{1-\sqrt{2}}{3})$

Evaluate the products

$f(x) = (x^2 + \frac{1+\sqrt{2}}{3}x + \frac{1-\sqrt{2}}{3}x + (\frac{1-\sqrt{2}}{3})(\frac{1+\sqrt{2}}{3})$

Evaluate the like terms

$f(x) = x^2 + \frac{2}{3}x - \frac{1}{9}$

So, we have

f(x) = x²+ 2/3x - 1/9

Read more about quadratic equations at

brainly.com/question/1214333

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1 year ago