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3 years ago

Simplify when it is possible. Help please! 10x2 -y + x2 =

Mathematics

2 answers:

harina [27]3 years ago

8 0

Answer:

11x²- y

Step-by-step explanation:

Simplifying an algebraic expression means to reduce said expression by grouping terms.

You can only group like terms, in other words, terms whose variables and exponents are the same ( y² and 5y² are like terms because they both have the variable y and the exponent 2. On the other hand y² and 3y³ are not like terms because they have different exponents and therefore you cannot group them).

You have the equation 10x² - y + x².

The like terms in this expression are 10x² and x², to group them we need to sum them up:

10x² + x² = 11x²

The other term is -y but there aren't any other like terms for it so it will remain the same.

Therefore, the expression 10x² - y + x² = 11x² - y

Dimas [21]3 years ago

6 0

The answer is
-1x2y+ 20

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oksian1 [2.3K]

Answer:

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Step-by-step explanation:

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0 | 228

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The mean or expected value is given by

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4 years ago

If costheta=4/5 then what is sec^2theta

DaniilM [7]

Answer:

$\sec^2(\theta)=\frac{25}{16}$

Step-by-step explanation:

Recall what the relationship between cosine and secant:

$\sec(\theta)=\frac{1}{\cos(\theta)}$

In other words, secant is the reciprocal of cosine.

So, if we know cosine, we only need to find its reciprocal to find secant.

We are given that cosine is:

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Then secant must be:

$\sec(\theta)=\frac{5}{4}$

So:

$\sec^2(\theta)=(\frac{5}{4})^2$

Square:

$\sec^2(\theta)=\frac{25}{16}$

And we're done!

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3 years ago

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tino4ka555 [31]

Step-by-step explanation:

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3 years ago

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3 years ago

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