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
Stella [2.4K]
3 years ago
13

140 subtracted from the square of a number the result is three times the number find the negative solution

Mathematics
1 answer:
natima [27]3 years ago
5 0

Answer:

Suppose~that~the~number~is~x.\\According~to~question,\\x^2-140=3x\\or, x^2-3x-140=0\\From~the~quadratic~formula,\\x = \frac{-(-3)+\sqrt{(-3)^2-4(1)(-140)} }{2(1)} ~and ~x= \frac{-(-3)-\sqrt{(-3)^2-4(1)(-140)} }{2(1)} \\or, x = \frac{3+\sqrt{9+560} }{2}~and~x=\frac{3-\sqrt{9+569} }{2}\\or, x = \frac{3+\sqrt{569} }{2}~and~x=\frac{3-\sqrt{569} }{2}\\So,~the~required~negative~number~is~\frac{3-\sqrt{569} }{2}.

You might be interested in
How can I write Five less than the quotient of a number and 3 is -7 in algabreaic expression
vladimir1956 [14]

Answer:

(n\div{3})-5={-7}

7 0
2 years ago
Find the area of the polygon.
professor190 [17]
The formula for the area of the triangles is base x hight divided by 2 (bh/2)
The formula for the square is length times width (l x w)

therefore...

bh/2 = (12)(6) / 2 = 36 (this is the area of one triangle)

then you need to times 36 by 4 because you have 4 triangles.
36 x 4 = 144

l x w = 12 x 12 = 144 (this is the area of the square)

last you need to add the area of the triangles (144) and the area of the square (144) because that will give you the total surface area of the shape.

144+144= 288

so your answer is 288cm squared (288cm2)
6 0
3 years ago
Read 2 more answers
if a dog food costs 0.75 per pound, and dog bones cost 1.75 each, what is the cost of 2 bones and 25 pounds of dog food?
Studentka2010 [4]

Answer:

2 bones and 25 pounds of dog food would cost $22.25

Step-by-step explanation:

5 0
3 years ago
I need help with my quiz please help this is consuming me
Strike441 [17]

Answer:

30.62 ft^2

8 0
3 years ago
2. Write the slope-intercept form of the equation for each graph described. Line passing through (-5, 12) and parallel to the li
Nostrana [21]

Answer:   y = 2x+22

========================================================

Explanation:

The equation y = 2x+5 is in the form y = mx+b

m = 2 = slope

b = 5 = y intercept

Parallel lines have equal slopes, but different y intercepts. So the answer will be in the form y = 2x+c, where b and c are different numbers. Since b = 5, this means c must be some other number. If c = 5, then we'd have the exact same line.

Let's plug in (x,y) = (-5,12), along with the slope m = 2, and solve for c

y = mx+c

12 = 2(-5)+c

12 = -10+c

12+10 = c

22 = c

c = 22

Since m = 2 and c = 22, we go from y = mx+c to y = 2x+22

The equation of the parallel line is y = 2x+22

The graph is below.

7 0
2 years ago
Other questions:
  • Liz earns a salary of $2,100 per month plus a comission of 5 percent of her sales. She wants to earn at least $2,400 this month.
    14·2 answers
  • At the beginning of April, Owl Corporation has a balance of $12,000 in the Retained Earnings account. During the month of April,
    6·1 answer
  • A jumper costing £90 was sold for £108. find the percentage profit
    15·2 answers
  • To find quotient of 4divided1/5,multiply 4 by
    6·1 answer
  • Need help rn plzzzzzz
    10·1 answer
  • Which of the following best describes the number shown below?
    15·1 answer
  • Michael bought a Sprite for $2.30 and three candy bars. He spent $6.50. How much did each candy bar cost?
    10·2 answers
  • 6 cm 4 cm 10 cm What is the surface area of the figure? square centimeters ​
    8·1 answer
  • ASAP ASAP ASAP PLS ANSWER
    11·1 answer
  • Pretest: Unit 1
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!