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2 years ago

Mr. Haley is leaning a ladder against the side of his house to repair the roof.

Mathematics

2 answers:

ratelena [41]2 years ago

8 0

20 Feet long. Based on the given conditions, formulate: square root of 20 to the power of 2 +16 to the power of 2

Evaluate the equation/expression 20

so that will leave you with your answer of 20

KatRina [158]2 years ago

5 0

20 Feet long. Based on the given conditions, formulate: square root of 20 to the power of 2 +16 to the power of 2

Evaluate the equation/expression: 20

get the result: 20

Answer: 20

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How many solutions does this system have?

Leokris [45]

Answer:

The correct option is d.

Step-by-step explanation:

The given equations are

$x-2y=2$ .... (1)

$y=-2x+5$ .... (2)

In equation 2, multiply both sides by 2.

$2y=-4x+10$ .... (3)

Now add equation (1) and (3).

$x-2y+2y=2+(-4x+10)$

$x=2-4x+10$

$x+4x=12$

$5x=12$

Divide both sides by 5.

$x=\frac{12}{5}=2.4$

Put this value in equation (2).

$y=-2(2.4)+5$

$y=-4.8+5$

$y=0.2$

Therefore the solution of the system of equation is (2.4,0.2) and the system has only one solution. Option d is correct.

7 0

2 years ago

Read 2 more answers

Plz do both of them for me and even show the work plzzzzzz

Vinvika [58]

Answer:

(a)= option 3

(b)= option 3

Step-by-step explanation:

(A) It is given that a sequence is defined by the recursive function $a_{1}=1$ and $a_{n}=a_{n-1}+n$

Now, substituting the value of n=2 in above equation,

$a_{2}=a_{1}+2$

$a_{2}=1+2$

$a_{2}=3$

Again putting n=3,

$a_{3}=a_{2}+3$

$a_{3}=3+3$

$a_{2}=6$

Putting n=4,

$a_{4}=a_{3}+4$

$a_{4}=6+4$

$a_{4}=10$

Putting n=5,

$a_{5}=a_{4}+5$

$a_{5}=10+5$

$a_{5}=15$

Putting n=6,

$a_{6}=a_{5}+6$

$a_{6}=15+6$

$a_{6}=21$

Putting n=7,

$a_{7}=a_{6}+7$

$a_{7}=21+7$

$a_{7}=28$

Hence, option 3 is correct.

(B) The given sequence is :

5, -10, 20, -40, 80.....

Since, the given sequence is GP, therefore

$a_{1}=5$ and r=-2

The nth term is given by:

$a_{n}=a_{1}r^{n-1}$

For fifteenth term, put n=15 in above equation, we get

$a_{15}=5(-2)^{14}$

= $5{\times}16384$

= $81920$

Hence, the fifteenth term is 81920.

Option 3 is correct.

5 0

2 years ago

I need help with this Adding Fractions problem. If you answer and fill out this whole page I will love you for the rest of my li

zhannawk [14.2K]

Answer:

omigosh hope she gets better i will look at the pdf and solve

Step-by-step explanation:

okay so for most of them you can just multiply by the denominator to turn it into a regular number (to get it out of fraction form) and then use basic algebra to solve for x. I 'll write the answers to problems 1-9 in the comments

8 0

2 years ago

What is 5/5 using simplest form

boyakko [2]

5/5 is 1/1 but the simplest form is just 1

4 0

2 years ago

PLEASE HELP FAST!!!!!!!!

seropon [69]

Answer:

Option B. -j = -h/-k is not correct

Step-by-step explanation:

As from the given scenario both the negative signs will be cancelled out giving positive j : -h/-k = -j

First option has: -j = -h/k In this case also the negative sign from both sides would be cancelled out.

Second option has: -h/-k = -j In this case negative signs cannot be cancelled out.

Third option has: h/-k = -j , negative sign would be cancelled from both sides.

Fourth option has: h/k = j , no negative sign on either side.

i hope it will help you!

7 0

2 years ago