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artcher [175]
3 years ago
5

My'chael has read 120 pages, which is 45% of a book. How many pages are in the book?

Mathematics
1 answer:
Mars2501 [29]3 years ago
7 0

Answer:

266.67

Step-by-step explanation:

120=.45(x)

x=266.67

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Translate the following words into an algebraic expression.
olganol [36]

Answer:

You've learned how to work with variables and how to evaluate algebra expressions, now we are going to translate words into algebraic expressions.

This skill will come in handy when working with word problems or real life situations. Pay close attention to the "key words" that represent mathematical operations.

You are probably very used to translating words into numerical expressions. Think about this...

We are used to seeing the words, plus, sum, difference, minus, product ...

The good news is that these very same words that we use to write numerical expressions are going to be used to write algebra expressions.

The difference between a numerical expression and an algebra expression is that we will be using variables when writing an algebraic expression. Instead of "8 plus 9" (with two given numbers), you would see, "a number plus 9".

We don't know exactly "what number", so we would use a variable to indicate that it can be any number.

Key words for each operation are indicated in bold. This will help you to easily translate the expression.

As, you can see from the red, bold words, the key words for addition are: sum, more than, plus, increase, add, older than.

Please also remember that addition is commutative; therefore, you can reverse the digits and you will end up with the same answer.

Now, let's take a look at the key words for subtraction.

5 0
3 years ago
Read 2 more answers
In a 45 45 90 right triangle the length of the hypotenuse is 15/2 what is length on one of the legs
Nikitich [7]
Hi there!

For any 45 45 90 right triangle, the length of the hypotenuse is always the square root of 2 times one of the legs.

To get the lengths of the leg, let's divide the length of the hypotenuse by the square root of 2.

We get the following:

\frac{15}{ 2 \sqrt{2} }

When simplifying fractions like this, we want to avoid having radicals on the bottom. In order to remove the radical from the denominator, let's multiply the numerator and the denominator by the square root of 2.

We get the following:

\frac{15 \sqrt{2} }{4}

That's your answer.

Have an awesome day! :)

- collinjun0827, Junior Moderator
8 0
3 years ago
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CaHeK987 [17]

Answer:

Measure of BC = 10.

Step-by-step explanation:

This is an isosceles triangle because the 2 base angles are both 50 degrees.

So the 2 sloping sides AB and BC  are also equal.

3 0
3 years ago
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viktelen [127]
-7 to make 4 so -4x=4 x=-1

The answer is x=-1

Hope this helps:)
6 0
3 years ago
Read 2 more answers
Can somebody help me? thank you
Marianna [84]

Answer:

17/20.........................

4 0
3 years ago
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