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Anarel [89]
3 years ago
8

21. Are the following equations conditional equations, identities, or impossible equations?

Mathematics
1 answer:
Liula [17]3 years ago
4 0

Answer:

4(2x-3)=8x-12 is identity

3x +5=3x-7 is impossible

Explanation:

A conditional equation is an equation that is true for some values and false for others

an identity equation is an equation that is true no matter what value you plug in

an impossible equation is an equation that has no solutions.

lets first try to solve

4(2x-3)=8x-12

distributive property, distribute the 4

8x-12=8x-12

this is an identity!

now for the second equation

3x+5=3x-7

add 7 to both sides

3x+12=3x

subtract 3x from both sides

12=0

wait a minute. This equation is false. this means it has no solutions. its an impossible equation.

Step-by-step explanation:

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How do you write a linear equation given the slope and a point that
Serga [27]

Answer:

point slope form

Step-by-step explanation:

hi! we can use point slope form:

y-y1=m(x-x1)

where m is the slope, x1 is the x-coordinate of the given point, and y1 is the y-coordinate of the given point.

example:

slope is 4

ordered pair is (2,3)

y-3=4(x-2)

y-3=4x-8

y=4x-5

hope this helps!

6 0
3 years ago
What are the solutions to x2 - 2x -8=0?
pav-90 [236]
The answer is 2
Add like terms
Add 8 to -8 and the zero
To get 4x=8
Then divide 4 and 8 by 4
To get x=2
4 0
4 years ago
PLEASE HELP!!!!!!!!!!!!!!!
AysviL [449]

I would say it would be 55 and if this question.If you get the answer incorrect my apologies

Step-by-step explanation:

40 + y + y + 30 = 180

2y + 70 = 180

2y + 70 (-70) = 180 (-70)

2y = 180 - 70

2y = 1102y/2 = 110/2

y = 110/2

y = 55

helped by AnimeBrainly.

5 0
3 years ago
An acting award is a square pyramid with a base that measures 6 inches on each side. The slant height is 8 inches. What is the s
kupik [55]

Answer:

The surface area of the award is 132\ in^{2}

Step-by-step explanation:

we know that

The surface area of the square pyramid is equal to the area of the square base plus the area of its four lateral triangular faces

so

SA=6^{2}+4[\frac{1}{2}(6)(8)]=132\ in^{2}

7 0
3 years ago
What is the COMPOUND INTEREST earned on a $10,000 deposit for 15 years at a compound interest rate of 10%. *
Varvara68 [4.7K]
10,000 x 15 x 0.1 = 15,000
4 0
3 years ago
Read 2 more answers
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