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leonid [27]
3 years ago
6

Please help, this is all I need then I can watch tv!!!

Mathematics
1 answer:
elena55 [62]3 years ago
8 0

Answer:

2.5

Step-by-step explanation:

CD = [AC * CB]/AB = [3 *4]/5 = 12/5 = 2.4

(AB = sqrt(AC^2 +CB^2) )

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Which equation is equivalent to the given equation?
emmainna [20.7K]

Answer:

  D.  (x – 3)^2 = 17

Step-by-step explanation:

We assume you want an equivalent to x^2 -6x = 8.

We can complete the square by adding the square of half the x-coefficient to both sides of the equation.

  x^2 -6x +(-6/2)^2 = 8 +(-6/2)^2

  (x -3)^2 = 17 . . . . simplify

3 0
2 years ago
What is the answer to this question please explain (picture included)
Yakvenalex [24]
Easy peasy
just use PEMDAS and some exonential laws

(x^{m})(x^{n})=x^{m+n}
(x^{m})^{n}=x^{mn}
(ab)^{m}=(a^{m})(b^{m})

also another is x^{\frac{m}{n}}=\sqrt[n]{x^{m}}

so

[3(2a)^{\frac{3}{2}}]^{2}=
(3^{2})((2a)^{\frac{3}{2}}^{2})=
(9)((2a)^{\frac{3}{2}}^{2})=
(9)((2a)^{\frac{6}{2})=
(9)((2a)^{3}) =
(9)(8a^{3}) =
72a^{3}

3 0
3 years ago
the angle of elevation of a top of a tree from a certain point on the ground is 45 degree. if the tree is 15 meters high,how is
Sphinxa [80]

Answer:

15m

Step-by-step explanation:

tan° = opposite/ adjacent

tan45 = 15/x

1 = 15/x

and = 15

6 0
3 years ago
Proves that the sum of <br>5 consecutive natural numbers is divisible by 5 ​
erastova [34]

Answer:

n = 5m + 10 = 5(m + 2), since m + 2 is an integer, then the n is divisible by 5.

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
What is 1.5533 rounded to the nearest cent
marta [7]
Centi = Hundreds. 
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Round up by seeing if the number to the right of the hundreds place is 5 or higher. If it's not, don't change anything.
1.55 is your answer.
4 0
2 years ago
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