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PilotLPTM [1.2K]
3 years ago
10

What is 19 +19 pls hurry its a quiz

Mathematics
2 answers:
Marysya12 [62]3 years ago
8 0

Answer:

36

Step-by-step explanation:

STatiana [176]3 years ago
4 0

Answer:

38

Step-by-step explanation:

use a calculator and mark me brainliest plz

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Which products result in a difference of squares? Select three options. (x minus y)(y minus x) (6 minus y)(6 minus y) (3 + x z)(
ValentinkaMS [17]

Answer:

Third option: (3 + xz)(-3 + xz)

Fourth option: (y^2 - xy)(y^2 + xy)

Sixth option: (64y^2 + x^2)(-x^2 + 64y^2)

Step-by-step explanation:

By definition, we can factor the Difference between two squares:

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

In order to find which products results in a difference of squares, we need to check each option:

 1.\ (x - y)(y - x)=(x)(y)+(x)(-x)-(y)(y)+(-y)(-x)=xy-x^2-y^2+xy=-x^2-y^2+2xy

The product does not result in a difference of squares.

2.\ (6 - y)(6 - y)

Since the signs are equal (-), the product will not result in a difference of squares.

Using Distributive Property for the other options, we get:

3.\ (3 + xz)(-3 + xz)=(3)(-3)+(3)(xz)+(xz)(-3)+(xz)(xz)=\\\\=-9+3xz-3xz+x^2z^2=x^2z^2-9=(xz)^2-(3)^2

The product results in a difference of squares.

4.\ (y^2 - xy)(y^2 + xy)=(y^2)(y^2)+(y^2)(xy)-(xy)(y^2)-(xy)(xy)=\\\\=y^4+xy^3-xy^3-x^2y^2=y^4-x^2y^2=(y^2)^2-(xy)^2

The product results in a difference of squares.

5.\ (25x - 7y)(-7y + 25x)=(25x - 7y)(25x - 7y)

Since the signs are equal (-), the product will not result in a difference of squares.

6.\ (64y^2 + x^2)(-x^2 + 64y^2)=(64y^2 + x^2)(64y^2 - x^2)=\\\\=(64y^2)(-x^2)+(64y^2)(64y^2)+(x^2)(-x^2)+(x^2)(64y^2)=\\\\=-64y^2x^2+4096y^4-x^4+64y^2x^2=\\\\=4096y^4-x^4=(64y^2)^2-(x^2)^2

The product results in a difference of squares.

5 0
3 years ago
Read 2 more answers
Max's age is 2 more then his father's age divided by 4 max is 13 years old. how old is his dad?
Ahat [919]
First write an equation for this (with X being the dads age).
X/4 +2= 13

Solve for x to find the dads age.

X/4=11
X=44
His dad is 44 years old
3 0
3 years ago
Read 2 more answers
How do I solve this​
Gemiola [76]

Answer:

Step-by-step explanation:

Simplifying

f(x) = 800(0.85) * x

Multiply f * x

fx = 800(0.85) * x

Multiply 800 * 0.85

fx = 680x

Solving

fx = 680x

Solving for variable 'f'.

Move all terms containing f to the left, all other terms to the right.

Divide each side by 'x'.

f = 680

Simplifying

f = 680

3 0
3 years ago
What is Index Law 1?<br> please give a definition
Nataly_w [17]

Answer:

LAW 2: The second law of indices tells us that when dividing a number with an exponent by the same number with an exponent, we have to subtract the powers. In algebraic form, this rule is as follows . ... Example: In this example, the powers were multiplied together to give the answer which is 3 to the power of 6.

6 0
3 years ago
Please help!!
LuckyWell [14K]

Answer:

Hmmmmm.....

Step-by-step explanation:

There were two and a half pizzas, but only 1/4 pies, so how many pieces of pizza would go with the amount of cake if you wanted to make the numbers proportional?

Idk

I answered only because you said please

7 0
4 years ago
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