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3 years ago

What is the value of x?

Mathematics

1 answer:

ryzh [129]3 years ago

8 0

Answer:

Step-by-step explanation:

The top triangle is similar to the whole triangle because of AAA

Then we know that the corresponding sides are similar

9/81=(3x-20)/(3x-20+56)

1/9=(3x-20)/(3x+36)

cross multiply

9(3x-20)=3x+36

27x-180=3x+36

24x=216

x=9

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Fill in the blanks to solve 50times 4

IgorLugansk [536]

Answer:

The answer is 200

Step-by-step explanation:

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3 years ago

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Svetach [21]

Answer: $12x-60$

Add () on 6

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3 years ago

Read 2 more answers

Vicky starts a new job with an hourly pay of 7.15$. Suppose that her hourly pay increases by 5% each year. What will Vicky’s hou

Bingel [31]

Answer:

$8.28

Step-by-step explanation:

This is a compound growth problem.

The formula is:

$F=P(1+r)^t$

Where F is the future amount (amount in 3 yrs)

P is the initial amount (here, it is 7.15)

r is the rate of growth, in decimal (5% means 5/100 = 0.05)

t is the time , in years ( t = 3)

Now, substituting, we find the hourly wage after 3 years:

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Hence,

after 3 years, at 5% growth, the new hourly wage would be $8.28

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3 years ago

A scientist is studying the motion of waves by measuring the distance between the crests and troughs of waves in a particular ar

Vikentia [17]

Answer:

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Step-by-step explanation:

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3 years ago

A roller coaster ride holds a total of 36 passengers. The ratio of males to females on the ride is 5 : 4. Let xx represent the n

Anna71 [15]

Let
x: represent the number of males on the ride
y: represent the number of females on the ride
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x+y=36
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rewritting:
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answer:
a system that you can use to find the number of males and the number of females on the ride is:
y=(4/5)x
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3 years ago