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Lana71 [14]
3 years ago
13

Please answer the two questions.

Mathematics
2 answers:
Anarel [89]3 years ago
6 0

Answer:

1. n= 14

2. n=3

Step-by-step explanation:

For the first problem, let's break down the equation. The number being thought about can be represented by <em>n</em>. Then <em>n </em>is increased by 7, or simply put 7+ <em>n. </em>The sum is 21, so to find n you can use the equation 7 + n = 24 and solve for <em>n, </em>which is 14.

For problem two, the same strategy can be used. The number is <em>n, </em>multiplied by 9. So, 9 * <em>n</em> is equal to 27. Solve for n by isolating n, and the answer is 3.

nika2105 [10]3 years ago
4 0

Answer:

1. n=14

2. n=3

Step-by-step explanation:

What you could do is if it says the sum of whatever and it gives you a number in the equation you can set it up.

#1. So for the first one the sum is (21) and a number it gives you is (7). It says <em>increased</em> and it says <em>sum </em>so that means you add.

7+n=21                  *question set up in equation*

-7     -7                   *subtract 7 from both sides to isolate n and get you're answer**

n=14

#2. For the 2nd one it says <em>multiplied</em> and <em>product</em> so you will be using multiplication. It gives you the product (27) and a number in the equation (9). To set it up:

9xn=27                      *question set up in equation*

9/9  =27/9                  *divide 9 by both sides to get answer. You divide bc its the opposite of multiplication**

n=3

<u>For the inverses</u>

If it is addition, subtract

If it is subtraction, add

If it is multiplication, divide

If it is division, multiply

<u>For context clues to set up equation</u>

Sum--> addition

Difference--> subtraction

Quotient--> division

Product--> multiplication


Hope it helps!

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Vitek1552 [10]

Step-by-step explanation:

your don't see what went wrong ?

Tyrell worked on

16 - 2(4 + 3x)

what do brackets mean ? they mean that this operation has to be done before everything else in the expression.

as this contains a variable, we cannot fully calculate it, true, but we need to keep this in mind and always treat the content of the brackets as one package.

so, whatever I do from the outside with one part of that package, I have to do also with all the other parts of that package.

so, the multiplication with -2 has to happen with both : 4 and 3x. not just with 4.

therefore, the correct simplification looks like

16 - 8 - 6x

8 - 6x or -6x + 8

Amelia multiplied correctly, but then made a mistake summing things up

10x - 3(4x + 1)

10x - 12x - 3

10x - 12x = -2x

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so, the result is

-2x - 3

6 0
3 years ago
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mote1985 [20]

Answer:

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Step-by-step explanation:

Given the 2 equations

y = 3x → (1)

y = x² + 3x - 16 → (2)

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Step-by-step explanation:

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3 years ago
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gladu [14]
Sum:

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 + -8x^5*y + 2x^3*y^4 +x*y^3
---------------------------------------
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Term 1: Degree = 6
Term 2: Degree = 4

Difference:

     3x^5*y - 2x^3*y^4 - 7x*y^3
 -  -8x^5*y + 2x^3*y^4 +x*y^3
---------------------------------------
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5 0
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Novay_Z [31]

Section 2.4

-------------------------------------------------

8x^2y : 2x : 2y = 2x

This is because 8x^2y divided over 2x leads to 4xy. Dividing 4xy over 2y leads to 2x.

-------------------------------------------------

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Note how 15 divided by 5 is 3

Also, x^6 divided by x^3 is x^3. You subtract the exponents.

Similarly, y^3 divided by y^2 is y^1 = y.

-------------------------------------------------

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Divide the coefficients to get 16/(-4) = -4

The y terms divide to (y^5)/(y) = y^4. Subtract the exponents.

The x and z terms are handled the same way.

--------------------------------------------------

-8x^2 : 2x = -4x

We follow the same steps as before. This time -8/2 = -4 is the new coefficient. The x terms divide to (x^2)/x = x where x is nonzero.

---------------------------------------------------

-6xz : -2zx = 3

The coefficients divide to (-6)/(-2) = 3

The x and z terms cancel out when we divide them.

---------------------------------------------------

3y^2x : xy^2 = 3

The y^2x expression is the same as xy^2, so when we divide these terms they cancel.

5 0
3 years ago
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