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lora16 [44]
3 years ago
11

Quais as raízes de: (x^2)-(2^x)-1=0

Mathematics
1 answer:
stiks02 [169]3 years ago
7 0

Answer:

Step-by-step explanation:

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I’m confused on this one
ziro4ka [17]

Compare the values they have given you with the diagram. a, b and c are all sides of the triangle they want you to find the perimeter of. Knowing this, all you have to do is add a, b and c. h is not important because you don't count the altitude of a triangle when you calculate perimeter.

12 + 10 + 12 = 34

The perimeter of the triangle is 34 ft.

7 0
3 years ago
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Last year, the student population at Sunshine Middle School was 876 students. This year it is 891 students. What percentage did
joja [24]
Step 1 : Find the difference [ 891 - 876 = 15 ]

Step 2 : Determine the percentage

Answer: 15% from last year

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6 0
2 years ago
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Can someone help me with this
VladimirAG [237]

Answer:

  A) 24 ft³

Step-by-step explanation:

The area of the right triangle base is ...

  A = (1/2)(3)(4) = 6 ft²

The volume of the triangular prism is the product of the area of its base (6 ft²) and its height (4 ft).

  V = Bh = (6 ft²)(4 ft) = 24 ft³ . . . . matches choice A

_____

<em>Comment on the triangle</em>

You know the 3-4-5 triangle is a right triangle, because you have seen those numbers many times in relation to the Pythagorean theorem. If you don't know that, then you can check to see by using the Pythagorean theorem:

  5² = 3² +4²

  25 = 9 + 16 . . . . . true; so the triangle is a right triangle

In any event, there are other means for finding the area of the triangle based on the lengths of its sides. You will get the same area result.

Using Heron's formula, s = (a+b+c)/2 = (3+4+5)/2 = 6.

  A = √(s(s -a)(s -b)(s -c)) = √(6(3)(2)(1)) = √36 = 6 . . . . area of base triangle

8 0
4 years ago
The pendulum of an antique clock has been damaged and needs to be replaced.If the original pendulum completed one swing every 1.
baherus [9]

Answer:

The length of pendulum is 55.853cm

Step-by-step explanation:

We are given

the original pendulum completed one swing every 1.5 seconds

so, T=1.5 sec

now, we can use time period formula

T=2\pi \sqrt{\frac{l}{g} }

l is the length of pendulum

g is acceleration due to gravity

g=9.8m/s^2

now, we can plug values

and then we can solve for l

1.5=2\pi \sqrt{\frac{l}{9.8} }

\frac{l}{9.8}=0.05699

l=0.55853m

In cm

l=55.853cm

3 0
3 years ago
Find the roots of the equation: 2(x−3)^2=3·(2x−11)
bekas [8.4K]

Answer:

5 and 4

Step-by-step explanation:

2(x-3)^2➡ 2×(x^2-6x+9) ➡ 2x^2-12x+18 = 6x-22

transfer and add like terms

2x^2-12x-6x=-22-18

2x^2-18x = -40

2x^2 - 18x + 40 = 0

(2x-8)(x-5)

x = 5 or, x = 8/2 ➡ 4

6 0
3 years ago
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