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
lidiya [134]
2 years ago
15

Determine the solution x^2 - 3x -28 ≥ 0

Mathematics
2 answers:
KengaRu [80]2 years ago
8 0

Answer:

(Infinity)],-4 or 7, ( Infinity)



IgorC [24]2 years ago
4 0

x^2 - 3x -28 ≥ 0

factor

(x-7) (x+4) ≥ 0

x=7  x=-4

we have three regions where the answers can lie

x<-4  between -4 and 7  and x>7

pick a point and see if it works

x=-10

(-10-7) (-10+4) ≥ 0

negative * negative  is greater than 0 so this is a solution   x< -4

x=0

(0-7) (+4) ≥ 0

negative * positive  is less than 0 so this is  not a solution  

x=10

(10-7) (10+4) ≥ 0

positive * positive is greater than 0 so this is a solution   x>7

We have two regions that work

x<-4 and x>7




You might be interested in
I need to solve for x, help please.
BaLLatris [955]

Answer:

x = 52   i hope this helps!   :)

Step-by-step explanation:

so first you gotta realize that every triangle has an interior angle measurement sum of 180 degrees

so we are given 3 angles   74 degrees  x + 2  and x

we now are going to put this into an equation   74 + x + 2 + x = 180

now lets combine like terms to get   76 + 2x = 180

then we are going to subtract the 76 from both sides   2x = 104

now lets divide both sides by 2   x = 52

so x = 52

we can plug in the value of x into both of the other equations to find the angle measurement

52 degrees

52 + 2 = 54 degrees

and then we have 74 degrees

add the 52, 54, and the 74 to make sure it is equal to 180 degrees

106 + 74 = 180

so yes, x does indeed equal 52 degrees

3 0
3 years ago
Read 2 more answers
The odometer in your mother’s car reads 3440 miles less than the odometer in your uncle’s car. Your mother’s odometer reads 2958
Serhud [2]
29580 + 3440 = 33020. The is about 33,000mi. The answer is d.
6 0
3 years ago
Read 2 more answers
Blue Star is starting a new distribution service that delivers auto parts to the service departments of auto dealerships in the
marusya05 [52]

Answer:

Blue Star

a.                                   The Ford TriVan   The Honda CityVan

Total life-cycle costs          $94,368                $90,936

Based on life cycle cost, the Honda CityVan is the best choice.

b. Blue Star needs to put on the Ford TriVan 9,032 miles more for the cost to be equal with the Honda CityVan's.

c. The crossover point in years = 5 months

Step-by-step explanation:

a) Data and Calculations:

                                        The Ford TriVan   The Honda CityVan

Purchase costs                  $28,000                 $32,000

Fuel efficiency per gallon   24 miles                 37 miles

Operating cost per mile     $0.20                     $0.22

Total operating costs         $4,400                   $4,840

Estimated annual distance 22,000 miles        22,000 miles

Gallons of fuel consumed  916.7 (22,000/24) 594.6 (22,000/37)

Total cost of fuel                 $3,896                  $2,527

Fuel cost per mile              $0.18                      $0.115

Total cost per mile             $0.38                     $0.335

Expected life of truck         8 years                   8 years

Average gas price = $4.25 per gallon

Total costs:

                                        The Ford TriVan   The Honda CityVan

Annual costs:

Total operating costs         $4,400                   $4,840

Total cost of fuel                $3,896                   $2,527

Annual costs                      $8,296                   $7,367

Life cycle costs:

Annual costs for 8 years   $66,368                $58,936

Purchase costs                  $28,000                $32,000

Total life-cycle costs          $94,368                $90,936

Difference in costs between Ford TriVan and Honda CityVan = $3,432 ($94,368 - $90,936)

Miles to put on the Ford TriVan for the life cycle cost to be equal to the life cycle cost of the Honda CityVan

= Difference in costs divided by total cost per mile of the Ford TriVan

= 9,032 miles ($3,432/$0.38)

Annual distance = 22,000 miles

Monthly distance = 1,833 miles

9,032/1,833 = 4.93 months or 5 months approximately

3 0
2 years ago
What value of (n) makes the equation true ? -2(n)+1.8=3.2 A. -0.7 B. 0.7 C. -3.4 D -2.5
Genrish500 [490]
The answer is A -0.7
-2(n) + 1.8 simplifies to:
-2n + 1.8 = 3.2
       - 1.8    -1.8
-2n = 1.4
n = -7
5 0
3 years ago
Monica has a 24-inch square frame. There are 4 equal sides. She paints 3/4 of one side of the frame blue. What fraction of the f
IgorC [24]

Answer:

3/16

Step-by-step explanation:

Monica has a 24-inch square frame.

There are 4 equal sides.

Hence, length of each side=24/4 inch

                                           = 6 inch

She paints 3/4 of one side of the frame blue.

i.e. she paints   \dfrac{3}{4}\times 6 inch

Total part to be painted=24 inch

Hence, fraction of the frame Monica painted blue is:

\dfrac{3\times 6}{4\times 24}\\ \\= \dfrac{3}{16}

4 0
3 years ago
Read 2 more answers
Other questions:
  • Aidan has 20 ft of fence with which to build a rectangular dog run. What is the maximum area he can enclose? Enter your answer i
    8·1 answer
  • A certain industrial process yields a large number of steel cylinder whose lengths are distributed normally with mean 3.25 inche
    14·1 answer
  • Find the area ofa rectangle<br> 15ft base<br> 4heiht
    13·2 answers
  • What is the remainder of 7964 divided by 8
    13·1 answer
  • The table shows ticket prices at the movie 16 theater.Let a represent the number of adult tickets, c the number of childrens tic
    15·1 answer
  • A hand consists of 3 cards from a well shuffled deck of 52 cards. a.Find the number of possible 3 card poker hands. b.A club flu
    5·1 answer
  • Which Statement is true about this right angle?
    14·1 answer
  • How do I find the scale factor?
    14·1 answer
  • The length of rectangular picture is 3 times as long as the width. If the area of the picture is 147 square inches, find the len
    10·1 answer
  • Hakeem subtracted 8 from a number, then multiplied the difference
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!