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Genrish500 [490]
3 years ago
9

What method would you choose to solve the

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
7 0

Answer:

This is a quadratic equation . We order to equate to zero

2x² – 7 = 9  

2x² - 7-9 = 0

2x² - 16 = 0

This equation is a binomial

2* (x² - 8) = 0

We choose the simplest method . The equation with practice it can be calculated in the memory

The product is equal to 0 if one of the factors is zero

2≠0  ∨     x² - 8 = 0

              x² = √8

              x = √8     ∨  x= - √8

Answer : x = √8 ∨ x = -√8

Step-by-step explanation:

yw ofc

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8. Kennedy wants to use an internet site to sell his game system. The website will charge him a
kirza4 [7]
Suppose the fee is 9 1/2 of the selling prive and theres ur answer
3 0
3 years ago
Y = -4x + 8<br> Y=3/5x - 6/5
VladimirAG [237]

Answer:

x=2 and y=0

Step-by-step explanation:

Rewrite equations:

y=−4x+8;y=

3

5

x+

−6

5

Step: Solvey=−4x+8for y:

y=−4x+8

Step: Substitute−4x+8foryiny=

3

5

x+

−6

5

:

y=

3

5

x+

−6

5

−4x+8=

3

5

x+

−6

5

−4x+8+

−3

5

x=

3

5

x+

−6

5

+

−3

5

x(Add (-3)/5x to both sides)

−23

5

x+8=

−6

5

−23

5

x+8+−8=

−6

5

+−8(Add -8 to both sides)

−23

5

x=

−46

5

−23

5

x

−23

5

=

−46

5

−23

5

(Divide both sides by (-23)/5)

x=2

Step: Substitute2forxiny=−4x+8:

y=−4x+8

y=(−4)(2)+8

y=0(Simplify both sides of the equation)

5 0
3 years ago
PLEASE I NEED HELP!!! FIRST ANSWER GETS BRAINLIEST!!!<br> Reduce to Simplest form. -5/8+(-8/5)
sergiy2304 [10]
Mixed number form :- 2 9/40
Decimal :2.22
Exact form :89/40
5 0
3 years ago
Read 2 more answers
What number do you add to get from <br> -6250 to -10
Tomtit [17]
You add 6240 to get from -6250 to -10 your welcome
3 0
3 years ago
Help ASAP Please with this math problem. Just look at the picture. ​
kondaur [170]

{( \sqrt{9)} }^{2}

={3}^{2}

= 9

{9}^ \frac{1}{2}

= ({3}^{2} ) ^{ \frac{1}{2} }

= 3 ^{1}

= 3

8 0
3 years ago
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