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Lisa [10]
3 years ago
5

What is the value of X?

Mathematics
1 answer:
Deffense [45]3 years ago
4 0

These angles are vertical angles meaning that they are equal to each other. Here is the equation for this problem:

x + 40 = 3x

Combine like terms

(x-x) + 40 = 3x - x

40 = 2x

Isolate x

40/2 = 2x/2

x = 20

Hope this helped!

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The sum of two numbers is 42, and one of the numbers is 5 times the other. Find the two numbers.
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3 years ago
A bookcase has two shelves. The top shelf has 10 more than 1/3 the number of books on the bottom shelf. There are 12 books on th
kobusy [5.1K]

Answer: b.14

Step-by-step explanation:

We have two shelves, the top shelf s_{t} and the bottom shelf s_{b}.

Now, firstly we are told the top shelf has 10 more than 1/3 the number of books on the bottom shelf. This can be expressed as:

s_{t}=10+\frac{1}{3}s_{b} (1)

Then, we are told there are 12 books on the bottom shelf:

s_{b}=12 (2)

Substituting (2) in (1):

s_{t}=10+\frac{1}{3}(12) (3)

s_{t}=10+\frac{12}{3} (4)

s_{t}=14 (5) This is the number of books on the top shelf

Hence, the correct option is b.

6 0
3 years ago
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strojnjashka [21]
I need more info to answer it
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3 years ago
A function is a rule that assigns each value of the __variable to exactly one value of the dependent variable
r-ruslan [8.4K]

Answer:

Independent

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Answer: A function is a rule that assigns each value of the independent variable to exactly one value of the dependent variable.

5 0
3 years ago
Read 2 more answers
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Answer:

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Step-by-step explanation:

we know that

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3 years ago
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