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Artyom0805 [142]
2 years ago
9

Explain why the equation is not linear 2x^2+y=7

Mathematics
1 answer:
Vladimir79 [104]2 years ago
8 0

Answer:

C

Step-by-step explanation:

Well anything with an exponent not equal to one for both x and y is not linear. That means that c is not equal to 0 as well.

D: is not true. x + y = 4 is linear. The coefficients are both 1.

B: is false because x has a power of 2 on it. y = 2^x is not linear either, but that is not relevant in this question.

A: See the remark above. The statement is true, but it does not make the equation linear.

I would pick C, but the question is very poorly worded. A is hard to get rid of. It is simply not what would make an equation linear.

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(−5)3x7(yz)4 / (3)2x2y8z2
g100num [7]

Answer:

\dfrac{(-5)3x^7(yz)^4}{(3)2x^2y^8z^2}=\dfrac{-5x^5z^2}{2y^4}

Step-by-step explanation:

Given:

The expression to simplify is given as:

\frac{(-5)3x^7(yz)^4}{(3)2x^2y^8z^2}

In order to simplify this, we have to use the law of indices.

1. (ab)^m=a^mb^m

So, (yz)^4=y^4z^4

Substitute this value in the above expression. This gives,

=\dfrac{(-5)3x^7y^4z^4}{(3)2x^2y^8z^2}\\\\\\=\dfrac{-15x^7y^4z^4}{6x^2y^8z^2}......(-5\times 3=15\ and\ 3\times 2=6)

Now, we use another law of indices.

2. \frac{a^m}{a^n}=a^{m-n}

So,  \frac{x^7}{x^2}=x^{7-2}=x^5,\frac{y^4}{y^8}=y^{4-8}=y^{-4}, \frac{z^4}{z^2}=z^{4-2}=z^2

Substitute these values in the above expression. This gives,

=\frac{-15}{6}\times x^5\times y^{-4}\times z^2\\\\=\frac{-5x^5y^{-4}z^2}{2}

Finally, we further simplify it using the law a^{-m}=\frac{1}{a^m}

So, y^{-4}=\frac{1}{y^4}

Therefore, the given expression is simplified as:

\dfrac{(-5)3x^7(yz)^4}{(3)2x^2y^8z^2}=\dfrac{-5x^5z^2}{2y^4}

5 0
3 years ago
Solve the following equation: x÷3-5=-7
Elodia [21]

Answer:

- 6

Step-by-step explanation:

Step 1:

x ÷ 3 - 5 = - 7   Equation

Step 2:

x ÷ 3 = - 2   Add 5 on both sides

Answer:

x = - 6   Multiply 3 on both sides

Hope This Helps :)

3 0
2 years ago
Please help it’s irritating when I keep having to post this and no ones bothering to even help me. Like I need to turn this is A
sukhopar [10]

Measure of E is congruent to K, so E is 50 degrees.

Measure of G is congruent to L, so G is 105 degrees.

Measure of F is congruent to J, J is 180 deg - 50 deg - 105 deg = 25 degrees, so F is 25 degrees.

<u><em>The proof I am using is the Corresponding Angles Postulate.</em></u>

<u><em /></u>

I NEED BRAINLIEST!

6 0
3 years ago
John is paid 5% commission on the value of photocopiers he sells. Last week he sold $24,000 worth of copiers. He decided to inve
allsm [11]

Answer:

5040

Step-by-step explanation:

24000-5%=1200

1200+5%=1260

1260x4=5040

3 0
3 years ago
Find the volume of the prism:​
Rudiy27

Answer:

240m

Step-by-step explanation:

Volume is length x width x height

7.5m x 4m x 8m: 240m

4 0
3 years ago
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