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
fiasKO [112]
3 years ago
7

Solve the quadratic equation by factorisation:x2-3x - 10 = 0​

Mathematics
1 answer:
frez [133]3 years ago
4 0

Answer:

x=−2

Step-by-step explanation:

You might be interested in
The value of which makes 2/3(1/4x-2)=1/5(4/3x-1)
sertanlavr [38]

Answer:

-34/3

Step-by-step explanation:

2/3(1/4x-2)=1/5(4/3x-1)

2/12x-4/3=4/15x-1/5

1/6x-4/3=4/15x-1/5

1/6x-4/15x=-1/5+4/3

-1/10x=-3/15+20/15

-1/10x=17/15

x=(17/15)/(-1/10)

x=(17/15)(-10/1)

x=-170/15

x=-34/3

7 0
3 years ago
Solve: Vx+1= Vx+6 -1
swat32

Answer:

x + 1 = x +7-2\sqrt{x+6}

Step-by-step explanation:

\sqrt{x+1}= \sqrt{x+6}-1

Squaring both sides of the equation would give (\sqrt{x+1} )^{2} =(\sqrt{x+6}-1 )^{2} which then simplifies to x + 1 = x -2\sqrt{x+6}+7

We can then subtract 7 from both sides to get x-6=x-2\sqrt{x+6}

Then we can subtract x from both sides, which cancel out and we get -6 =-2\sqrt{x+6}

Then we need to divide both sides by -2 to get 3=\sqrt{x+6}

Then we need to square both sides (3)^{2} =(\sqrt{x+6} )^{2} to get rid of the square root to get 9 = x + 6

Then finally subtracting 6 from both sides we get 3 = x

3 0
3 years ago
The graph below shows a line of best fit for data collected on the number of dogs visiting a dog park since it first opened.
aleksandrvk [35]

Hello!

Usually in a slope intercept equation, the y-intercept is a term, and is not a coefficient of x. The slope is usually multiplied by x. This eliminates A and C as answers.

Usually the y-intercept is a starting point. Not the slope. This means that B is also incorrect.

In D, it has the correct y-intercept. It shows that 16 dogs visited the first day, and the slope shows a constant rate of more dogs.

Therefore, our answer is D.

I hope this helps!

8 0
3 years ago
Math help asap timed 24 points!
S_A_V [24]

3x+8.5 =2.5x + 14.5

subtract 2.5x from each side

.5x + 8.5 = 14.5

subtract 8.5 from each side

.5x =6

multiply by 2

x =12

at 12 weeks they will be the same height

Choice B

3 0
3 years ago
(a) It takes the Earth 365 days to complete a full orbit around the sun. It takes Jupiter approximately 4,332 days, 14 h, and 9
kogti [31]

1 year = 365 days.

1 day = 24 hours.

1 hour = 60 minutes.

First convert the hours and minutes in Jupiter orbit to days:

14*60 = 840 +9 = 849 minutes.

849 / 60 = 14.15 hours.

14.15 / 24 = 0.59 days.

Jupiter's orbit is 4332.59 days.

Now divide that by 365 for the number of years:

4332.59 / 365 = 11.87 years.

5 0
3 years ago
Other questions:
  • I need help dividing a binomial
    6·2 answers
  • Kelly Jackson is an administrative assistant. She earns a weekly salary of $412.00. She applied and wad hired for an administrat
    6·1 answer
  • If ΔSTU≅ΔHIJ, then what corresponding parts are congruent?
    9·2 answers
  • Your teacher is giving a test worth 100 points containing 40 questions. There are two point and four point questions on the tes.
    9·2 answers
  • What is the sum of 5x^2+3x-7 and 12x+12?
    6·1 answer
  • A crew of highway workers paved 3/20 mile in 40 minutes if they work at the same rate what proportion of a mile well they paid i
    8·1 answer
  • Pls help imma give brainly
    7·1 answer
  • Which three steps are correct when solving this quadratic equation by completing the square? X^2-10x=39
    10·1 answer
  • Ram gives his son 100 naira on one day, 50 naira on the second day, 25 naira on the third day and so on. What will be the total
    7·1 answer
  • Un garaje rectangular tiene un perímetro de 26 metros y una superficie de 42 metros cuadrados. ¿Cuáles son las dimensiones del g
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!