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Komok [63]
2 years ago
14

Solve each equation by the quadratic formula. -x^2+5x-6=2

Mathematics
1 answer:
Gnoma [55]2 years ago
6 0

Answer:

x=  −5±√−7  / −2 --> (No Real Solution)

Step-by-step explanation:

−x^2+5x−6−2=2−2

−x^2+5x−8=0

x=  −(5)±√(5)2−4(−1)(−8)  / 2(−1)

x=  −5±√−7  / −2

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Let y be inversely proportional to x. if x​ doubles, what happens to​ y?
Mila [183]
When it is said that a variable is inversely proportional to another, it is best to write out an equation to represent it. 

This means; 

y=k/x (where k is a constant number like 1 or 2, etc) 

If you double x, the value of y is halved. I have attached a graph that shows this. 

Hope I helped :) 

4 0
3 years ago
A road bike has a wheel diameter of 622 mm. What is the circumference of the wheel? Use 3.14 for pi
Ghella [55]

Answer:

Circumference ≅ 195 mm

Step-by-step explanation:

The circumference of a circle is equal to: 2*\pi *radius

Since Diameter = 2*radius we can replace that in the circumference equation giving us:

Circumference = \pi *Diameter

We know Diameter = 622 mm and pi = 3.14 so:

Circumference = \pi *Diameter = 3.14 * 622 mm = 195.308 mm

7 0
2 years ago
Read 2 more answers
Changing Dimensions of 3-D Figures
Leni [432]

The prisms are congruent if the lengths of corresponding edges are in a 1:1  ratio, the volumes and the base areas are equal and the prisms have same height                                                                                                                                  

Step-by-step explanation:

For the two prisms to be congruent the following properties should hold TRUE

The lengths of corresponding edges are in a 1:1  ratio.

The volumes are equal.

The base areas are equal.

The prisms have the same height.  

4 0
3 years ago
Not sure how to do this. i always struggle with proofs.
nlexa [21]

Answer:

Statement: angle QAU congruent to angle KAC

Reasoning: vert. angle congruenct thm

S: angle U congruent to angle C

R: Alt. Int. Angle Thm

S: Triangle QUA similar to Triangle KCA

R: AA Sim. Thm

Step-by-step explanation:

Practice a lot of proofs and you'll start seeing a pattern in them and it will become way easier.

5 0
3 years ago
X2 + 5x - 50 = 0<br><img src="https://tex.z-dn.net/?f=%20%7Bx%7D%5E%7B2%7D%20%20%2B%205x%20-%2050%20%3D%200" id="TexFormula1" ti
love history [14]

Answer:

x = -10

x = 5

Step-by-step explanation:

{x}^{2}  + 5x - 50 = 0 \\ (x + 10)(x - 5) = 0 \\  \\ x =  - 10 \\ x = 5

8 0
2 years ago
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