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
Elden [556K]
3 years ago
6

Plz help me with this

Mathematics
1 answer:
goldenfox [79]3 years ago
5 0
Area of triangle=1/2(base×height)
360=1/2((4x-2)(7x+5))
720=(4x-2)(7x+5)
FOIL the binomial
720=28x^2+6x-10
Bring 720 to the other side
28x^2+6x-10-720=0
28x^2+6x-730=0
Factor 2 out
2(14x^2+3x-365)=0
Factor 2(14x+73)(x-5)=0
x-5=0
x=5
It can't be 14x-73=0 because the length can't be negative.
You're welcome.
You might be interested in
There are 235 whistles and 42 bells in the store. Ryan counts 128 whistles on the shelf. How many whistles are not on the shelf
yanalaym [24]
There would be 107 whistles
-equation- 235-128=107
7 0
3 years ago
What is the remainder when (x3 + 1) is divided by (x2 – x + 1)? x + 1 x 2 0
mariarad [96]

Answer:

x+1

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Nia plans to put enough money in the bank each week for 100 weeks so that the amount in the bank is always proportional to the w
garri49 [273]

Answer:

$40

Step-by-step explanation:

2 1/2 times the week

8 x 2.5 = 20

12 x 2.5 = 30

40 x 2.5 = 100

3 0
3 years ago
Read 2 more answers
Please help me get this easy maths question I’m mentally unwell
marshall27 [118]
Speed = distance / time

Speed = ?
Distance = 350km
Time = 5 hours


350km / 5hours = 70

He averages 70km/h
8 0
3 years ago
Sonia makes a wooden frame around a square picture. The frame is made of four congruent trapezoids. The shorter base is 9 in, th
sp2606 [1]

answer

congruent trapezoide for one

0,5(9+12)×1,5=15,75

area of picture frame =4×15,75=63

8 0
2 years ago
Other questions:
  • What is the next number? 2 7 8 3 12 9
    8·1 answer
  • Explain why estimation is an important skill to know when adding and subtracting decimals.
    8·2 answers
  • Tried but still got it wrong,anyone??
    14·2 answers
  • Which of the following ratios is used in finding the sine of an angle in a right triangle?
    7·1 answer
  • 9.74 x 1021_______2.1 x 1022 help me please with this? thanks to whoever does..............​
    9·1 answer
  • (x-4)^2-9=0<br> solve for x
    12·1 answer
  • Find m angle LKJif m angle LKD=60^ and m angle DKJ=55^
    9·2 answers
  • What is t=25c=15 plz help
    7·1 answer
  • Which step in the solution contains the first error ?? Please helpp
    11·2 answers
  • Which would you be most likely to measure using yards?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!