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3 years ago

Hey am am stuck on question 26 can u give me some help

Mathematics

2 answers:

Zina [86]3 years ago

8 0

The answer would be 12. take 60÷5 to get your answer

Diano4ka-milaya [45]3 years ago

4 0

60/5= 8
The alligator population decreases by eight alligators every year

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Find the surface area of a regualar pyramid that is a pentagonal pyramid with the area of a base is is 440.4mm and a height of 2

Inessa [10]

Answer:

1240.4 mm²

Step-by-step explanation:

The surface area of a pyramid = Area of the all sides + Area of base

Each side is a triangle.

With a regular pentagonal pyramid, the area of each triangle is

$A = \frac{1}{2}\times\text{base}\times\text{slant height}$

For the 5 triangles,

$A = 5\times\frac{1}{2}\times\text{base}\times\text{slant height} = \frac{1}{2}\times5\times\text{base}\times\text{slant height}$

Substituting given values,

$A = 5\times\frac{1}{2}\times16\ \text{mm}\times20\ \text{mm} = 800 \text{mm}^2$

Area of base = 440.4 mm²

Surface area of a pyramid = 800 + 440.4 mm² = 1240.4 mm²

6 0

3 years ago

How many terms are in the expression 5 - 3c + 21?

Dmitrij [34]

There are three terms. :)

8 0

3 years ago

What is the volume of the sphere below?

lbvjy [14]

Answer:

Option C

Step-by-step explanation:

sorry if I'm wrong..

4 0

3 years ago

David and Josh are both practicing for an upcoming swim tournament. Every week, David swims for 3x hours at an average speed of

Naya [18.7K]

<span>Josh swims 5 more hours per week than David so his hours = 3x + 5

His </span><span>average speed is 4 laps per hour less than David's so it is = x - 4
</span>
Total distance = hours * speed
= (3x + 5)*(x - 4)
= 3x^2 - 7x - 20

Ans is C

6 0

4 years ago

A is a supplement of B, A is a complement of C, and B = 124°. Find B+C.

KatRina [158]

Answer:

248

Step-by-step explanation:

A + B = 180 -EQ 1

A + C =180 -EQ 2

B =124

BY EQ1 :

A = 180 - 124 =56

C = 180 -56 =124

B + C = 124+124

=248

5 0

3 years ago