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Natalija [7]
2 years ago
9

A 29 foot ladder leans against a building so that the angle between the ground and the ladder is 77º. How

Mathematics
1 answer:
Dimas [21]2 years ago
7 0

Answer:

5 √ 10 + 2 √ 5 ft high

Step-by-step explanation:Explanation:

Let  h be the height to which latter of length of 20 ft reach then using Sine formula in right triangle with hypotenuse 20 & vertical leg h & opposite acute angle 0 = 72∘ sin θ =h 20 sin 72∘= h 20

h

=

20

sin

(

90

∘

−

18

∘

)

=

20

cos

18

∘

=

20

(

√

10

+

2

√

5

4

)

=

5

√

10

+

2

√

5

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Vladimir79 [104]

Answer:

65 kph

Step-by-step explanation:

There were a total of 7 hours. So two hours were at 70 and the other 5 hours at 63: the equation would be: (70+70+63+63+63+63+63)/7=65

4 0
3 years ago
, list the first five terms of each sequence.<br> f(n + 1) = −2f(n) + 8 and f(1) = 1 for n ≥ 1
svet-max [94.6K]

Answer: 1, 7, 1, 7, 1.

Step-by-step explanation:

The given function :  f(n+1)=-2f(n)+8 and  f(1) = 1 for n ≥ 1

We put value of n=1,2,3,4 , we get

For n=1  , f(2)=f(1+1)=-2f(1)+8=-1(1)+8=-1+8=7

For n=2  , f(3)=f(2+1)=-2f(2)+8=-1(7)+8=1

For n=3  , f(4)=f(3+1)=-2f(3)+8=-1(1)+8=7

For n=4  , f(5)=f(4+1)=-2f(4)+8=-1(7)+8=1

Hence, the  first five terms of the given sequence are 1, 7, 1, 7, 1.

7 0
3 years ago
The value of coin A is twice the value of coin B. Together, the total value of the two coins is $27.00 What is the value of each
elena-14-01-66 [18.8K]

Answer:

27÷2=$13.50

Step-by-step explanation:

Easy

5 0
3 years ago
PLEASE HELP I WILL GIVE BRAINLIEST!! PLEASE DONT PUT AN ABSURD ANSWER!<br> HURRY!!!
tiny-mole [99]
My answer is A. Hands down A.
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2 years ago
A triangle has one side that measures 4x and two sides that measure x + 5 each. Write an
Tamiku [17]
P = 4x + 2(x + 5)
That’s the expression
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