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Shalnov [3]
3 years ago
9

What do we mean by the value of an expression?

Mathematics
1 answer:
Alexxx [7]3 years ago
7 0

We have learned that, in in an algebraic expression, letters can stand for numbers. When we substitute a specific value for each variable, and then perform the operations, it's called evaluating the expression. Let's evaluate the expression 3y + 2y when 5 = y.

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Aiko is finding the sum (4 + 5i) + (–3 + 7i). She rewrites the sum as (–3 + 7)i + (4 + 5)i. Which statement explains the mathema
yan [13]
In this item, it can be seen that from an expression of,
                                  (4 + 5i) + (-3 + 7i)
Aiko transformed the equation by factoring out the i's from the expression and wrote it as,
                                   (4 + 5)i + (-3 + 7)i
Now this is wrong because i there is not a variable but a notation that 5 and 7 are imaginary numbers. In fact, she cannot factor out the i's because it is not present in both -3 and 4. The answer therefore to this item is the last sentence, "Aiko incorrectly used the distributive property by combining ..."
4 0
3 years ago
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Select the equivalent expression.
tankabanditka [31]

Answer:

La respuesta es 10

Step-by-step explanation:

Hice todos los procedimienos y me dio 10 xd

8 0
3 years ago
Write the fractions in order from least to greatest. 7/8, 1/4, 3/8, and 4/8
m_a_m_a [10]

Answer:

1/4 3/8 4/8 7/8

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3 years ago
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Help pls!! thanks in advanced!!
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go and kysx lololollozz 912929

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Marco is coaching football 24 out of 30 days in June which decimal is equivalent to the fraction of days until he coach football
Sergio [31]

Answer:

Since the fraction of this is very obviously 24/30, here's how you can get a decimal out of that:

First, you simplify that fraction.

24/30 = 4/5, since 5x6 is 30 and 6x4 is 24

Now, it's pretty easy to convert 4/5 into a decimal.

This is how I like to do it. You re-convert the fraction one step higher, so it's 8/10, and you just turn it into 0.8, since it's all out of 10.

I hope I helped, and I'd appreciate a "Brainliest"! ☺

4 0
3 years ago
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