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3 years ago

In 1992, the average electric bill for a single

Mathematics

1 answer:

Aleksandr [31]3 years ago

6 0

Answer:

Price went up, $24.64/year for 28 years

Step-by-step explanation:

Change Year = 28

Change Price = 690

Average rate = 690/28 = 24.64

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In Exercises 15 and 16, tell whether the triangle with the given side

Nata [24]

15. 10 cm, 10 cm, V200 cm : Right Angled Triangle

16. 9 in., 16 in., 25 in. : Not a right angled triangle

Step-by-step explanation:

In order to check whether the given sides form a right angled triangle, we check if the sum of squares of two shorter sides is equal to the square of third longest side.

15. 10 cm, 10 cm, V200 cm

$The\ shorter\ sides\ are\ 10cm\ and\ 10cm\\Let \\a=10\\b=10\\c=\sqrt{200}So,\\c^2=a^2+b^2\\(\sqrt{200})^2=(10)^2+(10)^2\\200 = 100+100\\200 = 200$

The triangle is a right angled triangle.

16. 9 in., 16 in., 25 in.

Here

a = 9 in

b=16 in

c=25 in

So,

$c^2=a^2+b^2\\(25)^2=(9)^2+(16)^2\\625=81+256\\625=337$

The given triangle is not a right angled triangle.

Keywords: Triangle, Right angled Triangle

Learn more about triangle at:

#LearnwithBrainly

3 0

3 years ago

Find the sum. Write your answer in simplest form. 3/7+ 2/3

frosja888 [35]

3/7 + 2/3

3/7 x 3/3 = 9/21
2/3 x 7/7 = 14/21

9/21 + 14/21 = 23/21 = 1 2/21

8 0

2 years ago

At Ice Cream Haven, 14 of the last 18 sundaes sold had nuts. What is the experimental probability that the next sundae sol...

Pepsi [2]

Answer:

7/9 or 2/9, depending on the question!

Step-by-step explanation:

Probability that next sundae has nuts is 14/18 = 7/9.

Probability that the next sundae does not have nuts = 2/9

3 0

3 years ago

What is the inverse of f(x)=4x+5?

cestrela7 [59]

Answer:

Step-by-step explanation:

swap y and x in the function. that is

$x = f(y)$

we get x=4y+5

Solve for y

(x-5)/4=y

$f ^{ - 1}(x) = \frac{1}{4} (x - 5)$

3 0

2 years ago

Find the supplement of 80º (only answer with a number, not the word degrees)

Nana76 [90]

Answer:

100°

Step-by-step explanation:

two angles are supplement .

if their sum is equal to 180°

supplement angle of 80° + x = 180°

180° - 80° = 100° answer

8 0

2 years ago