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
Anuta_ua [19.1K]
3 years ago
9

Solve x^2 - 3x - 10 = 0

Mathematics
1 answer:
Pachacha [2.7K]3 years ago
6 0

Answer:

5 and -2

Step-by-step explanation:

{x}^{2}  - 3x - 10 = 0

{x}^{2}  - 5x + 2x - 10 = 0

x(x - 5) + 2(x - 5) = 0

(x - 5)(x + 2) = 0

x - 5 = 0

x = 5

or

x + 2 = 0

x =  - 2

You might be interested in
Help plz will mark brainliest!
gizmo_the_mogwai [7]

Answer:

94 cm^2

Step-by-step explanation:

The surface area of a rectangular prism can be found using:

A=2(wl+hl+hw)

We know the width is 3, the height is 5, and the length is 4. We can substitute 3 in for w, 5 in for h, and 4 in for l.

A=2((3*4)+(5*4)+(5*3))

Multiply 3 and 4

A=2(12+(5*4)+(5*3))

Multiply 5 and 4

A=2(12+20+(5*3))

Multiply 5 and 3

A=2(12+20+15)

Add 12 and 20 and 15

A=2(47)

Multiply 2 and 47

A=94

So, the the surface area is 94 cm^2

3 0
3 years ago
Please help me... there will be 7 more questions where that came from
Aleksandr [31]
168 students because 28% of 600 is 168.
6 0
3 years ago
With Obesity on the rise, a Doctor wants to see if there is a linear relationship between the Age and Weight and estimating a pe
Romashka [77]

Answer:

112.569 ( D )

Step-by-step explanation:

Applying the estimated Regression Equation

y = b1X1 + b2X2 + a

b1 = ((SPX1Y)*(SSX2)-(SPX1X2)*(SPX2Y)) / ((SSX1)*(SSX2)-(SPX1X2)*(SPX1X2)) = 596494.5/635355.88 = 0.93884

b2 = ((SPX2Y)*(SSX1)-(SPX1X2)*(SPX1Y)) / ((SSX1)*(SSX2)-(SPX1X2)*(SPX1X2)) = 196481.5/635355.88 = 0.30925

a = MY - b1MX1 - b2MX2 = 149.25 - (0.94*61.31) - (0.31*193.88) = 31.73252

y = 0.939X1 + 0.309X2 + 31.733

For x1 ( age ) =39, and  x2(weight) =143

y = (0.93884*39) + (0.30925*143) + 31.73252= 112.569

where

Sum of X1 = 981

Sum of X2 = 3102

Sum of Y = 2388

Mean X1 = 61.3125

Mean X2 = 193.875

Mean Y = 149.25

attached is the Tabular calculation of the required values needed for estimated regression equation

8 0
3 years ago
Alejandro wants to adopt a puppy from an animal shelter. At the​ shelter, he finds eight puppies that he​ likes: a male and fema
alexgriva [62]

Answer:

Hence the required probability is, 3/4

Step-by-step explanation:  

At the shelter, he likes :  

a male coolie, a female coolie, a male boxer, a female boxer, a male beagle, a female beagle, a male Labrador, and a female Labrador.  

Let, A denote the event of selecting a male coolie and B denote the event of selecting a male Labrador.  

P(A) = 1/8 = P(B)  

Here the probability of selecting a puppy except A & B is,  

P(AUB)c = 1 - P(AUB) = 1 - { P(A) + P(B) } = 1 - 1/8 - 1/8 = 3/4

7 0
3 years ago
BRAINLIEST.In which quadrant does the point (-5, 21) lie?
DanielleElmas [232]

Answer:

Point (-5,21) would end up in quadrant II (2).

Step-by-step explanation:

It would end up in quadrant 2 because x=-5 which means it would go left.

y=21 which means it would go up.

Because of this, the point would end up in the top left of the graph which is quadrant 2.

4 0
3 years ago
Other questions:
  • An arithmetic sequence has the explicit formula an = 7n – 17. What is the value of a1?
    12·2 answers
  • What is the greatest common factor of 48 and 84?
    11·2 answers
  • On a number line, Danielle drew a dot at 600. Then, she drew another dot on a number that was 500 units smaller. What number was
    14·2 answers
  • Which are the solutions of x ^ 2 = - 5x + 8 ? (- 5 - sqrt(57))/2, (- 5 + sqrt(57))/2 (- 5 - sqrt(7))/2, (- 5 + sqrt(7))/2 (5 - s
    11·1 answer
  • W<br> Given that m + 3n: m +9n<br> 2:5.<br> Write an equation in terms of m and n<br> m=
    8·1 answer
  • What is the measure of angel C?
    15·1 answer
  • In the division problem 18+ 3 = 6, is 18 the <br> quotient<br> divisor<br> dividend<br> remainder
    12·2 answers
  • GRAPHHSS PLZ HELP I WILL GIVE 30 POINTS I NEED THIS ASAP
    10·1 answer
  • On a monday a friend says he will meet you again in 34 days. What day of the week will that be?
    11·1 answer
  • Winston ears 140$ by selling 56 hotdogs at the concession stand at school. Using the same rate for the cost of one hot dog how m
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!