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Setler [38]
3 years ago
10

Y = -X + 1 Y = 3 Substitution method

Mathematics
1 answer:
eduard3 years ago
8 0

Answer:

x=-2, y=3. (-2, 3).

Step-by-step explanation:

y=-x+1

y=3

----------

-x+1=3

-x=3-1

-x=2

x=-2

y=-(-2)+1

y=2+1=3

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My house is two blocks west and 5 blocks north of my school. My friends house is 8 blocks east and one block south of the school
insens350 [35]
16 blocks.
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They’re all different directions so just add them all up. You get 16
3 0
2 years ago
Given: ABCD is a parallelogram and A ABC = ADCB.
Cloud [144]

Answer:

Step-by-step explanation:

Angle ABC is a right angle because all interior angles of a rectangle are right angles.

6 0
2 years ago
For each expression listed, is it a difference of squares? Explain yes or no and why or why not. Explain in enough detail so the
Harlamova29_29 [7]
<h2>Explanation:</h2><h2></h2>

If we can write a polynomial in the form a^2-b^2, then we can factor it as:

a^2-b^2=(a-b)(a+b)

In this problem, we have the following expressions:

1. \ y^5 - 25 \\ \\  2. \ 9m^2n^2-121  \\ \\ 3. p^{18} - q^{10} \\ \\ 4. 16r^2 - 27

  • For 1 and 4 we can't write this in the form a^2-b^2 so this is not a difference of squares.

  • For 2:

9m^2n^2-121 =3^2m^2n^2-11^2 \\ \\ =(3mn)^2-11^2 =(3mn-11)(3mn+11)

So we could write 2 as a difference of squares.

  • For 3:

p^{18} - q^{10}=(p^9)^2-(q^5)^2=(p^9-q^5)(p^9+q^5) \\ \\ \\ Remember: \ (a^m)^n=a^{mn}

So we could write 2 as a difference of squares.

7 0
3 years ago
The difference of half of a number and three is equivalent to negative five?
swat32

Answer:

-7

Step-by-step explanation:

Let the number be represented with 'Y'

Half of the number will be = Y/2

The difference of half of a number and 3

= Y/2 - 3

Is equivalent to negative 5

That is,

Y/2 - 3 = -5

y/2-3/1 = -5/1

Collect like terms

y/2 = -5/1+3/2

y/2 = -7/2

Multiply both sides by 2

y/2 ×2 = -7/2×2

Y = - 7

Hence the number is negative 7

8 0
3 years ago
Dino has 14 coins and 2 one dollar bills which describes the relationship between the coins and the dollar bills?
kakasveta [241]

Answer:

All together Dino has 2 dollars and 14 cents.

Step-by-step explanation:

I hope this helps. Sorry if I am wrong.

5 0
2 years ago
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