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Angelina_Jolie [31]

2 years ago

12

The denominator of a fraction is four more than the numerator. If both numerator and denominator are decreased by one, the simpl

ified result is 57. Find the original fraction. (Do NOT simplify.)

1 answer:

bearhunter [10]2 years ago

8 0

8/12 is the original fraction hope this helps

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A sequence of 7 numbers starts with 8. The second number in the sequence is unknown and may be positive or negative. The third t

scoray [572]

Answer:

4

Explanation:

$a_1=8,a_7=0$

Since the third term is the sum of the two previous terms

$a_3=a_2+a_1$

$a_7=a_6+a_5$

$a_7=a_5+a_4+a_4+a_3$

Continuing in like manner

$a_7=5a_3+3a_2$

Since $a_3=a_2+a_1$

$a_7=5(a_2+a_1+3a_2$

$a_7=5a_2+5a_1+3a_2$

$a_7=8a_2+5a_1$

Recall: $a_1=8,a_7=0$

$0=8a_2+5*8$

$8a_2=-40$

$a_2=-5$

The sequence is therefore:

8,-5,3,-2,1,-1,0

The sum of the seven numbers is 4.

8 0

3 years ago

A 13.5-m fire truck ladder is leaning against a wall. Find the distance d the ladder goes up the wall (above the fire truck)

larisa86 [58]

To solve this problem you must apply the proccedure shown below:

1. You have the the<span> 13.5-m fire truck ladder is leaning against a wall and the ladder makes an angle of 39 degrees 45 ' with the horizontal.

2. Then you have:

3</span>9 degrees 45'=39.75°
<span>
Sin(39.75°)=d/13.5
d=13.5x</span>Sin(39.75°)
<span> d=8.63

</span>

8 0

3 years ago

Read 2 more answers

Help Meeeeeeee!!!!!!!!

vesna_86 [32]

Answer: 1st one

Step-by-step explanation:

8 0

3 years ago

P plus (negative 9)= thirty three

Cloud [144]

Answer:

42

Step-by-step explanation:

33+9=42

42-9=33

5 0

3 years ago

How can the common difference between 375-315=30

Firlakuza [10]

Hello :
in the arithemitic sequence : an = an-1 + 30

3 0

3 years ago