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
Shkiper50 [21]
2 years ago
9

factorise the following 1. x²-2x+15.... 2. y²-19y+90​

Mathematics
1 answer:
Marta_Voda [28]2 years ago
3 0

Answer:

1. x²-2x+15

This can't be factored, I've tried multiple ways now, but it just can't be factored.

2. y²-19y+90​

Let's factor y^2−19y+90

y^2−19y+90

The middle number is -19 and the last number is 90.

Factoring means we want something like

(y+_)(y+_)

Which numbers go in the blanks?

We need two numbers that...

   Add together to get -19

   Multiply together to get 90

Can you think of the two numbers?

Try -9 and -10:

   -9+-10 = -19

   -9*-10 = 90

Fill in the blanks in

(y+_)(y+_)

with -9 and -10 to get...

(y-9)(y-10)

Answer:

(y−9) (y−10)

You might be interested in
How many sides would there be in a convex polygon if the sum of all but one of its interior angles is $1070^{\circ}$
Gwar [14]

Convex Polygon:

A polygon is called a convex polygon when no line segments between the points, goes inside. The boundaries of the convex polygon do not go inside and all the vertices are pointed outside away from the center. The interior angles of a convex polygon are less than 180°.

Lets simplify the given problem,

If we try using 1070 degrees as the sum of the interior angles of a convex polygon, we get:

1070 =[n - 2] x 180, where n = number of sides

1070 =180n - 360180n =1070+360180n =1430n = 1430 / 180

n = 7.94 number of sides. Since this is not a whole number, will simply round it up to 8.

Hence the number of sides is 8

Learn more about Convex Polygon on:

https://brainly.ph/question/14274548

#SPJ4

5 0
2 years ago
Read 2 more answers
Find the length of side BC.<br> Give your answer to 1 decimal place.
Alenkasestr [34]

Use

Angle sin A = AB/BC

AND FIND IT OUT

PLEASE FOLLOW ME

5 0
3 years ago
Read 2 more answers
Han can run 100 meters in 20 seconds how long will it take him to run 3000 metres
Juliette [100K]

Answer:

600 seconds

Step-by-step explanation:

In this case we have to calculate the speed;

Speed = Distance/Time

Speed = 100/20 = 5 mph

Next to get our answer we have to calculate the amount of time

Time = Distance/Speed

Time = 3000/5 = 600 seconds

4 0
3 years ago
In your opinion, what is the easiest method to use to factor and solve a quadratic function? What is the most challenging?
Tems11 [23]

i like diveding so the most esest way is divedeing

3 0
3 years ago
Read 2 more answers
Apply the distributive property t create an equivalent expression
earnstyle [38]

Answer:The answer is 24m-28

Step-by-step explanation:

Hope this helps

7 0
3 years ago
Other questions:
  • What coordinate for F would make triangle ABC and triangle DEF congruent? (The file of the image is attached!)
    5·2 answers
  • Determine whether 606 is divisible by 2, 3, 4, or 6.
    9·2 answers
  • You jog 623 miles around a track each day. If you jogged that distance 4 times last week, how many miles did you jog?
    12·2 answers
  • What is the value of x? If sin (8x - 18)º = cos (5x + 4)°
    10·1 answer
  • The JayC dealership tracks its car sales based on the type of car. The graph shows the percent of sales
    11·1 answer
  • Susan has a 12-inch board for construction a wooden chair. The directions say to use a board that is 29 centimeters long.Is her
    7·1 answer
  • Sorry for spamming but may i get help on this last one
    9·2 answers
  • Which function is best represented by this graph?
    14·1 answer
  • Telephone plan consist of a monthly fee of $20 plus $.20 per minute for long distance calls made write an equation for the total
    15·1 answer
  • Write the equation in slope intercept form <br> y=-3/4x+0<br> what is y
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!