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ollegr [7]
3 years ago
14

Solve the equation using a method other than factoring. Show all your work. x² - 7x + 3 = 0

Mathematics
1 answer:
natka813 [3]3 years ago
5 0
Completing the square

7/2=3.5
3.5^2=12.25
add that to both sides
x<span>²-7x+12.25+3=12.25
factor perfect square
(x-3.5)</span><span>²+3=12.25
minus 3 both sides
(x-3.5)</span><span>²=9.25
square root both sides
x-3.5=+/-√9.25
add 3.5 to both sides
x=3.5+/-√9.25

x=3.5+√9.25 or 3.5-√9.25</span>
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Please help :):):):):):):):......
Gelneren [198K]
13+13=26
9+9=18
18+26=44

Hope this helps :)
3 0
3 years ago
Read 2 more answers
Solve for X. The Triangles in each pair are similar
Klio2033 [76]

Answer:

x = 7

Step-by-step explanation:

In this question, we need to find what the value of x is.

To do so, we need to find the value of the change of the triangle, since the triangles are basically the same

We know to get from 18 to 27, we would need to multiply 18 by 1.5.

This means that the triangle "BCD" is increasing from 1.5 to get "JKL"

With this knowledge, we also know that side CB, 10, needs to increase by 1.5

When you multiply 10 by 1.5, you get 15.

The triangle side "JK" is the same side as "CB", so we need to find what makes the value of 15 for the "JK" side.

To do this, solve 3x-6 for 15.

3x - 6 = 15

Add 6 to both sides.

3x = 21

Divide both sides by 3

x = 7

The x-variable would be 7.

5 0
3 years ago
I need help on this one question. Please help me. Find the area of the shaded region. It says round to the nearest tenth if nece
schepotkina [342]
30.44 but it depends how you do the problem
5 0
3 years ago
Graph the function g.<br> f(x) = -2(x-4)² +4<br> g(x) = f(x) - 1<br> O
Sedaia [141]

Answer:

19

Step-by-step explanation:

fx=16+4

fx=20

gx= 20-1

gx=19

19

3 0
2 years ago
can someone help me with the circumferences and other stuff on this picture please (zoom out to see the full picture)
Daniel [21]
The corcumference C of a circle is C= 2 x pie x radius
So radius= C/(2pie)

Volume of cylinder= pie x r(squared) x h
8 0
3 years ago
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