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marishachu [46]
3 years ago
5

La suma de los ángulos internos de un heptágono es: A. 720° B. 900° C. 360° D. 1260°

Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
4 0

Answer:  The sum of the interior angles of a heptagon is 900 degrees.

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Blake is 7 years older than Heather. In 7 years the sum of their ages will be 55. How old is Blake now?
Andreas93 [3]

Answer:

24 years old

Step-by-step explanation:

Let the age of Blake be x and the age of Heather by y then...

x=7+y

7+x+7+y=55

Notice we are adding additional 7s because the question states "in 7 years"

Simplify the second equation...

7+x+7+y=55

14+x+y=55

Subtract 21 from both sides

x+y=41

Solve using substitution (substitute 7+y for x since x = 7+y)

7+y+y=41

Combine like terms

2y+7=41

Subtract 7 from both sides

2y=34

Divide both sides by 2

y=17

x=7+17=24

Blake is 24 years old now

4 0
2 years ago
Subtract this pair of fractions<br> 1/3x-5/3x
babunello [35]

Answer:

-7x/6

Step-by-step explanation:

x/2-5x/3

Taking LCM

3x/6-10x/6

(3x-10x)/6

-7x/6

6 0
3 years ago
If 1500 grows to 1950 after 5 years, find the simple interest rate
olga_2 [115]
1580 I assume srry if it is incorrect 
6 0
3 years ago
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24% of what number 30
kenny6666 [7]

Answer:

125

Step-by-step explanation:

30*.24=125

4 0
3 years ago
Mr.Hoges wants to build a fence around his entire rectangular garden.What is the total distance around his garden
svetoff [14.1K]

Answer:

The total distance of the rectangular garden is the perimeter of the garden.

Step-by-step explanation:

Since the garden is in a rectangular shape. So, the perimeter of the rectangular garden is the distance on which Mr. Hoges can build the fence. However, the perimeter can be determined by adding all the sides. A rectangular shape contains four sides and opposite sides are equal. Thus, it can be determined by using the below formula;

P=2(l+b)

Where

l = length of the garden

b is the breadth of the garden

3 0
3 years ago
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