1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Allushta [10]
2 years ago
9

X^2-8x=-15 solve by completing the square

Mathematics
1 answer:
larisa86 [58]2 years ago
7 0

Answer:

Step-by-step explanation:

You might be interested in
The sum of the reciprocal of a number and 5/6 is 13/12. Find the number.
ddd [48]

\frac1x+\frac56=\frac{13}{12}\ \ \ \ |\cdot12\\ 12\cdot\frac1x+12\cdot\frac56=12\cdot\frac{13}{12}\\ \frac{12}x+\frac{60}6=13\\ \frac{12}x+10=13\ \to \ \frac{12}x=3\ \to \ \boxed{x=4}

4 0
3 years ago
Read 2 more answers
A Ferrari drove 300 kilometers in one and a half hours. How fast was the car going?
irga5000 [103]
I'm assuming you mean how many mph when you refer to how fast the car was going.

So 300 km = 1.5 hrs

1.) Find the number of km per hour
Since we have the equation 300km = 1.5hr, we can just divide 1.5 (to isolate the number of hours) on both sides.

You should get 200 km = 1 hour

2.) Convert km to miles
To do this, you must know the conversion 1 km = 0.621371192 miles

So to convert 200 km to miles, just multiply 200 x 0.621371192.

You should get 124.274238.

That means the Ferrari drove at a pace of roughly 124 mph :)
8 0
3 years ago
Read 2 more answers
What is the radius of a circle whose equation is x 72 y 102 4
almond37 [142]

The circle of the given radius with equation (x-7)²+(y-10)²=4 is 2 units.

<h3>What do we mean by circles?</h3>

A circle is, in the simplest terms, a circular shape without edges or lines.

Its geometric form is that of a closed curve.

If you track a moving point in a plane while keeping a fixed distance from another point, a circle will have a closed shape.

The English word "circle" derives from the Greek word "kirks," which means "hoop" or "ring."

So, the equation for a circle in its standard form is:

(x - h)² + (y - k)² = r²

Where the radius is r and the centroid is (h, k).

The equation is: (x - 7)² + (y - 10)² = 4

This is rewritten as:

(x - 7)² + (y - 10)² = 2²

When compared to the typical form:

(h, k) = (7, 10)

The circle's radius is 2.

Therefore, the circle of the given radius with equation (x-7)²+(y-10)²=4 is 2 units.

Know more about circles here:

brainly.com/question/24375372

#SPJ4

Correct question:
What is the radius of a circle whose equation is (x-7)²+(y-10)²=4?

8 0
1 year ago
I need help hdbcjsjfnfnfjfjffdbbfdncndnc
lbvjy [14]
\frac{3}{15k+30} : \frac{6k}{5k^2+30k+40} = \frac{3}{15(k+2)} . \frac{5(k+2)(k+4)}{6k} = \frac{k+4}{6k}
8 0
3 years ago
Rapid Rental Car charges a $40 rental fee, $15 for gas, and $0.25 per mile driven. For the same car, Capital Cars charges $45 fo
pochemuha

Answer: y = 40 + 15 + .25x , y = 45 + .35x


Step-by-step explanation: What is your question? if your looking to put them into forms then here it is


6 0
2 years ago
Other questions:
  • Please need with one
    7·1 answer
  • Evaluate the following expression using the values given:
    9·2 answers
  • Write the expression that is represented by the phrase. The product of a number plus 7 and 3.
    14·1 answer
  • What is the domain of the set {(-3,5),(2,0),(7,-5)}?
    15·1 answer
  • Can someone help me with this
    14·2 answers
  • If the slope and a point of a line are given, then the equation of the line can be written in point-slope form. True False
    7·1 answer
  • Which of the following ratios would form a proportion with2/3?
    13·1 answer
  • Find the volume of the cylinder.
    7·1 answer
  • ____________________
    15·1 answer
  • The length of a rectangular poster is 2 more inches than three times its width. The area of the poster is 33 square inches. Solv
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!