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
gayaneshka [121]
2 years ago
13

( x + 30 ) ( x + 40 ) solve for x

Mathematics
2 answers:
PolarNik [594]2 years ago
7 0

Answer:

Step-by-step explanation:

(x+30)(x+40)

X(x+40) +30(X+40)

X²+40x+30x+1200

X²+70x+1200

by applaying quadrtic fromula we get

a=1, b=70, c=1200

(-b ± √(b2 − 4ac))/(2a)

put the values

(-70±√(70)²-4(1)(1200)/2(1)

(-70±√4900-4800)/2

(-70±√100)/2

(-70±10)/2

either                                       or

-70+10/2                                    -70-10/2

-60/2                                             -80/2

-30                                                   -40

so x={-30,-40}

vazorg [7]2 years ago
5 0

Answer:

X^2 + 70x + 12000

Step-by-step explanation:

Is that what you wanted? I got that by using the distributive method.  

You might be interested in
The ratio of the number of cars to the number of motorcycles in a parking lot is 10 : 3. The ratio of the number of motorcycles
Harman [31]
5 because 20:6 is the car to motorcycle. 6:15 is the motorcycle to van. 20÷15=5 ~JZ
3 0
3 years ago
Helppppppppppppppppppppp
babymother [125]

Answer: its B

Step-by-step explanation:

because the circle is open and its the greater than sign

5 0
2 years ago
Read 2 more answers
Find the values of x and y<br> X =<br> Y=
labwork [276]

Answer:

Find the values of x and y

X =60

Y=60

60°

3 0
2 years ago
Error Analysis: Kayla said the remainder of x^3+ 2x^2 -4x + 6 divided by
andrezito [222]

9514 1404 393

Answer:

  C) No, Kayla is not correct, because the remainder is -49 not 149

Step-by-step explanation:

The remainder from division by x+5 can be found by evaluating the polynomial at x=-5, the value of x that makes the divisor zero.

Evaluation is often easier when the function is written in Horner form.

  ((x +2)x -4)x +6

For x=-5, this is ...

  ((-5 +2)(-5) -4)(-5) +6 = (-3(-5) -4)(-5) +6 = 11(-5) +6 = -49

Kayla is not correct; the remainder is -49.

5 0
2 years ago
Reservation fee of 47.00 and additional fee of 7.40 per hour. Spend less than 91.40. Possible about if time for room
KIM [24]

Answer:

The room can be rented for 6 hours with $91.4

Step-by-step explanation:

If my guess was correct, there was a reservation fee of $47, and there was another fee of $7.4 per hour and the question is asking for how many hours can be rented with $91.4 and the variable t to represent the time.

First, $91.4-$47 as that is the reservation fee. $91.4-$47 = $44.4

Next, we figure out how many hours can we rent with $44.4. Since one hour of rental costs $7.4, t = 44.4/7.4

Finally, we just divide. This is a relatively simple question when thinking about how straightforward this is.

44.4/7.4 = 6

Recheck:

7.4*6 = 44.4

t = 6

5 0
3 years ago
Other questions:
  • Solve the equation -25(10-x)=25x+250
    10·1 answer
  • Question 1
    13·1 answer
  • the distance between Columbus Ohio and New York City is about 560 miles how many hours would it take the train to travel between
    7·1 answer
  • Prove that 1-cos2A/sin2A =TanA
    5·1 answer
  • A bakery sold a total of 200 cupcakes in a day, and 69% of them were vanilla flavored. How many of the cupcakes sold that day we
    10·1 answer
  • Mai will spend more than $23 on gifts. So far, she has spent $15. What are the possible additional amounts she will spend? Use c
    15·1 answer
  • What are the like terms in the expression 3×+2+4y+5y
    14·2 answers
  • Question 1
    11·1 answer
  • Please answers in detail common assessment 2 question.
    6·2 answers
  • Convert 5pie/3 radians to degrees
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!