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AnnZ [28]
2 years ago
12

This is k 12 help, please!!! for (100 points)

Mathematics
2 answers:
Gennadij [26K]2 years ago
6 0

Answer:

14 m²

area of sqaure pyramid: a² + 2(a)(l)

  • a = side of the base
  • l = slant height

area:

  • (2)² + 2(2)(2.5)
  • 14 m²
Vlad1618 [11]2 years ago
3 0

Answer:

3rd option - 14 m²

Step-by-step explanation:

First we know that the square's area will be 2×2 = 4

To calculate the area of a triangle we know the vertical height is 2.5 and the base length is 2 so we can use the formula b×h/2 to give the area of one triangle:

2.5×2 = 5

5÷2 = 2.5

So the area of 1 triangle is 2.5 m²

Since there are 4 triangles we multiply the area of 1 traingle by 4:

2.5×4 = 10

We add the area of the 4 triangles to the area of the square to give our final answer of :

10 + 4 = 14

14 m²

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Evaluate the expression when the value of the variable is given. 40 - 8x when x = 2
Ede4ka [16]

Answer:

24

Step-by-step explanation:

To evaluate this, we just need to substitute 2 for whenever we see x.

40 - 8 (2)

From here, we can just use order of operations to simplify it down to a single number.

40 - 16

24

So, when x = 2, we get 24.

4 0
3 years ago
Solve each of the following equations. <br><br> |3x−4(x+1)|=2
kramer

Answer:

-2, -6

Step-by-step explanation:

|3x−4(x+1)|=2

|3x - 4x - 4| = 2

|-x - 4| = 2

-x - 4 = 2

-x = 6

x = -6

-x - 4 = -2

-x = 2

x = -2

7 0
3 years ago
The lengths of the sides of a triangle are in the extended ratio 6 ​: 7 ​: 9. The perimeter of the triangle is 44 cm. What are t
Dimas [21]

Add 6+7+9, which gives 22.

Divide 44 by 22, which is 2.

Multiply the ratio by 2:

(6 : 7 : 9) * 2 = 12 : 14 : 18

The lengths of the sides are 12cm, 14cm, 18cm.

4 0
4 years ago
A flying squirrel jumped from a tree 11 feet in the air at the initial velocity of 9 ft./s the equation H equals negative 2T squ
Nady [450]

Answer:

The squirrel maximum height (h) = 21.125 ft

Step-by-step explanation:

The objective of this question is to determine the squirrel's maximum height.

Given that:

h = -2t² + 9t + 11

Differentiating h with respect to t, we get;

\dfrac{dh}{dt}= -4t +9

At the time dh/dt = 0, the velocity is maximum

Thus;

-4t = -9

4t = 9

t = 9/4

t = 2.25 seconds

From;

h = -2t² + 9t + 11

h = - 2(2.25)² + 9(2.25) + 11

h = - 10.125 + 20.25 + 11

h = 21.125 ft

4 0
3 years ago
An airplane in flight needed to make an emergency landing so it descended at an angle of depression of 15 degrees for 50,000 ft
JulijaS [17]

Answer:

13,397 ft

Step-by-step explanation:

tan 15 = height/50,000

0.2679(50,000) = 13,397 ft

5 0
3 years ago
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