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den301095 [7]
3 years ago
11

Please help explain on how to do it as I am having trouble solving it.​

Mathematics
1 answer:
aleksley [76]3 years ago
5 0

Answer:

the value if x is 15

Step-by-step explanation:

Use Pythagoras theorem

x² = (x - 3)² + 9²

x² = x² -3x -3x + 9 + 81

x² = x² -6x + 90

x² - x² + 6x = 90

6x = 90

divide through by 6

x = 90/6

x = 15

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You are a contractor and charge $65 for a site visit plus an additional $15 per hour for each hour you spend working at the site
Katena32 [7]

Answer:

h = 59 hours

Step-by-step explanation:

Total earnings = fixed charge + variable charge

Fixed charge = $65

Variable charge = $15h

Where, h = number of hours

Total earnings = $950

Total earnings = fixed charge + variable charge

950 = 65 + 15h

Subtract 65 from both sides

950 - 65 = 65 + 15h - 65

885 = 15h

Divide both sides by 15

h = 885 / 15

= 59

h = 59 hours

6 0
3 years ago
Need answer ASAP <br> *MARKING BRAINLIEST
NikAS [45]

Answer:

an = 4n +5

Step-by-step explanation:

First we need to find a common difference

d = a2-a1 = 13-9 = 4

The formula for an

an =a1+d(n-1)

an = 9 + 4(n-1)

Distributing

an = 9+4n-4

Combine like terms

an = 4n +5

8 0
3 years ago
Solve the system of equations by substitution. Write your solution as an ordered pair
attashe74 [19]
X + 8x = 81
9x = 81, x = 9
y = 8(9), y = 72
Solution: (9, 72)
6 0
3 years ago
Read 2 more answers
What is the equivalent decimal to this fraction? 10/45 0.2 0.222222222... 0.232323232323... 0.181818181818...​
Ivan

Factorize the numerator and denominator, then simplify:

10/45 = (2×5)/(9×5) = 2/9

Now,

1/9 = 1/10 + 1/90

1/90 = 1/10 × 1/9 = 1/10 × (1/10 + 1/90) = 1/100 + 1/900

1/900 = 1/100 × 1/9 = 1/100 × (1/10 + 1/90) = 1/1000 + 1/9000

and so on, which is to say

1/9 = 1/10 + 1/100 + 1/1000 + …

or

1/9 = 0.111…

so that multiplying both sides by 2 gives

2/9 = 0.222…

5 0
2 years ago
Justin has three goldfish and one turtle. Write a fraction to represent the part of his pets that are goldfish.
Troyanec [42]

Answer:

3/4

Step-by-step explanation:

3 goldfish

4 total pets

7 0
4 years ago
Read 2 more answers
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