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Kisachek [45]
3 years ago
9

Find the total area the regular pyramid. T. A. =

Mathematics
2 answers:
drek231 [11]3 years ago
8 0

Answer:

T.A = 16\sqrt{3}

lorasvet [3.4K]3 years ago
5 0

Answer:

T.A. = 16√3 units²

Step-by-step explanation:

∵ The total area = the area of the four faces

∵ The four faces are equilateral triangles with side length 4

∵ Area of the equilateral Δ = 1/4 s² √3

∴ T.A. = 4 × 1/4 × 4² × √3 = 16√3 units²

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If x³ + 2x and x³ − 7x² + 4x +2 + k have a common linear polynomial factor, then the value of k is what?
Georgia [21]

Answer:

  • k = -2

Step-by-step explanation:

<u>Factor x³ + 2x:</u>

  • x³ + 2x = x(x² + 2)

1. <u>The common factor is x, then</u>:

  • 2 + k = 0 ⇒ k = -2 (all the rest are divisible by x)

2. Factor x² + 2 is not linear therefore we discard it.

8 0
3 years ago
Solve (x + 9)2 = 25.
Rina8888 [55]

Answer:

x = -4 and x = -14

Step-by-step explanation:

Our equation is (x + 9)² = 25

Applying the square root property we would need to take the square root of both sides: \sqrt{(x+9)^{2} } =\sqrt{25}

This give us x + 9 = ±5

Here we have two equations since taking the square root gives us a positive and negative value

Our first equation is x + 9 = 5, and to isolate the variable we would need to subtract 9 from both sides, giving us x = -4

Our second equation is x + 9 = -5, and to isolate the variable we would need to subtract 9 from both sides, giving us x = -14

3 0
3 years ago
HELP I NEED HELP ASAP<br><br> FIND THE SLOPE AND Y-INTERCEPT OF THE TABLE.
Murljashka [212]
I don’t know about the slope but the Y-Intercept is just the Y.
4 0
3 years ago
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Darina [25.2K]
The answer is (3,4)
3 0
3 years ago
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alisha [4.7K]

For Q3, you can subsitute x = 2 and y = 5 into the systems

-5(2) + 5 = -5

so it's a solution for the first system

-4(2)+2(5) = 2

it's also a solution for the second system

8 0
2 years ago
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