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
kari74 [83]
3 years ago
10

Find the roots of the equation by factoring. X^2 - 2x = 15

Mathematics
2 answers:
SVEN [57.7K]3 years ago
5 0
Roots: 5 and -3
The factors are -5 and 3 because they add to -2 and multiply to -15.
X^2 -2x = 15
-15 -15
X^2 -2x -15 = 0
(X -5) (x +3)
X= 5 and -3
prisoha [69]3 years ago
3 0

Answer:

x = 5

Step-by-step explanation:

5x5 = 25

25- 10 = 15

15 = 15

You might be interested in
Find the median of the data.
kipiarov [429]

Answer:

  • 92.5

Step-by-step explanation:

<u>The data given:</u>

  • 93, 81, 94, 71, 89, 92, 94, 99

<u>Put the data in the ascending order:</u>

  • 71, 81, 89, 92, 93, 94, 94, 99

<u>Since the data size is even, the median is the average of middle two:</u>

  • median = (92 + 93)/2 = 92.5

4 0
2 years ago
A donkey weighs 570 pounds and an elephant weighs 5 tons how much more does the elephant weigh in pounds and ounces?
goldfiish [28.3K]
The elephant weighs 9,430 pounds more than the donkey.
6 0
2 years ago
There is 28 kg 750 g of sugar in a sack. How many tins of 500 g sugar can be filled using the sugar in the sack?
vovangra [49]

Answer:

Step-by-step explanation:

28 kg + 750 g = 28*1000 + 750

                          28000 + 750

                       = 28750 g

Number of sack = Total quantity of sugar ÷ quantity of sugar in a sack

                           = 28750 ÷ 500

                           =  57 sacks

6 0
2 years ago
Read 2 more answers
PPPLLLZZZ HELP I'LL GIVE BRAINLIEST
kati45 [8]

Allen's work is not written properly so I have rearranged it as shown below:


Original problem) –8.3 + 9.2 – 4.4 + 3.7.

Step 1) −8.3 + 9.2 + 4.4 + 3.7 Additive inverse

Step 2) −8.3 + 4.4 + 9.2 + 3.7 Commutative property

Step 3) −8.3 + (4.4 + 9.2 + 3.7) Associative property

Step 4) −8.3 + 17.3


We can see that in step 1), Allen changed -4.4 into +4.4 using additive inverse. Notice that we are simplifying not eliminating -4.4 as we do in solving some equation. Hence using additive inverse is the wrong step.


Alen should have collect negative numbers together and positive numbers together.

Add the respective numbers then proceed to get the answer.


–8.3 + 9.2 – 4.4 + 3.7

= –8.3 – 4.4 + 9.2 + 3.7

= -12.7 + 12.9

= 0.2



6 0
3 years ago
Read 2 more answers
Please someone help me
Vanyuwa [196]
1.
1/4 is less then 2/4 or 1/2so if the denominator is equal it will be easier to multiply
3 0
3 years ago
Other questions:
  • Mandy has 50 yards of fabric to make costumes for a play. She makes 12 skirts that take 3 yards each, and 9 hats that each take
    8·1 answer
  • 32 feet per sec squared into inches
    6·2 answers
  • Suppose you are doing a study on the wealth of the population in your town. You take a random survey of 100 people. Which would
    12·2 answers
  • Graph the solution...please helppp me
    7·1 answer
  • Which is the vertex of x2 + 10x= - 17?<br> (-5.-8)<br> (5.8)<br> (-5.8)<br> (5.-8)
    13·1 answer
  • Find the value of X (in this picture)​
    15·1 answer
  • Please help<br> Need working for 2 and 3
    15·1 answer
  • What is the value of y? <br><br><br><br> Thank you :)
    6·2 answers
  • Write as a single power: 5^3 × 5^2 × 5
    12·2 answers
  • Somebody please help me:(
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!