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3 years ago

Amanda leaned a 15-foot ladder against the top of her house so she could get on the roof, which is 12 feet from the ground.

1 answer:

8 0

If you're trying to find the missing side of the "triangle" (the distance from the house to where the ladder touches the ground), you would use the pythagorean theorem, a²+b²=c². (c is always hypotenuse)

a²+b²=c²

12²+b²=15²

144+b²=225

b²=81

√b²=√81

b=9

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7. The value of y varies directly with x, and y = 8 when x = 2. Find y when x = 10.

lesya692 [45]

Y= 40 explanation don’t want to just trust me it’s 40

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3 years ago

J. Reexamine the sequence 20, 14, 8, 2, ... from the problem

DENIUS [597]

Answer:

The n th of the given sequence is $t_{n} = 26-6 n$

Step-by-step explanation:

Step 1 :-

Given sequence is 20,14,8,2,.......this sequence in arithmetic progression but this sequence is decreasing sequence.

given first term is 20 and difference is $d = second term- first term = 14-20=-6$

now the nth term of given sequence is

by using formula $t_{n}=a+(n-1)d$

$t_{n}= 20+(n-1)(-6)$

$t_{n}= 20-6 n+6$

final answer:-

$t_{n} = 26-6 n$

verification:-

$t_{n} = 26-6 n$

put n=1 we get first term is 20

put n=2 we get second term is 14

put n=3 we get third term is 8

put n=4 we get fourth term is 2

so the n th term of sequence is

$t_{n} = 26-6 n$

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3 years ago

Use substitution to solve the following system of equations. What is the value of y?

koban [17]

The answer is C. I solved for the first variable in one of the equations then substitute the result into the other equation.

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3 years ago

Solve x^2=18 where x is a real number

V125BC [204]

Answer:

x = ±3√2

or in decimal:

x = ±4.24

Step-by-step explanation:

x² = 18

x = ±√18

= ±√2√9

= ±3√2

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3 years ago

Read 2 more answers

Find the value of each expression 1.|9|

Leni [432]

Answer:

Step-by-step explanation:

|9| = 9

Absolute value is distance from zero. 9 is 9 away from 0. BRAINLIEST? :')

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3 years ago