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
inysia [295]
3 years ago
11

G 1) a2 + 3a – 40 = 0 . solving quadratic equations

Mathematics
1 answer:
QveST [7]3 years ago
5 0

Answer:

The solution set is {-8, 5}.

Step-by-step explanation:

a^2 + 3a – 40 = 0 .

We need 2 numbers whose product is  -40 and whose sum is +3.

They would be + 8 and - 5, so we have the factors:

(a + 8)(a - 5) = 0

Now either a + 8 = 0 or a - 5 = 0, so:

a = -8 or 5.

You might be interested in
What is the amount of sales tax owed on a $39 jacket if the tax rate is 5%?
mash [69]
Letter c is the answer

8 0
3 years ago
In the diagram, point O is the center of the circle and m∠ADB = 43°. If m∠AOB = m∠BOC, what is m∠BDC?
VMariaS [17]
Bruh idk this is hard.
6 0
3 years ago
Read 2 more answers
the area of aron's favorite poster is 6 square feet. the length of the poster is 3 feet. find the width of the poster​
MatroZZZ [7]

Answer:

The width is 2 ft

Step-by-step explanation:

We know the area of a rectangle is

A = l*w

The area is 6 and the length is 3

6 = 3*w

Divide each side by 3

6/3 = 3w/3

2 =w

The width is 2 ft

6 0
3 years ago
Read 2 more answers
Pls give me the right answer
natka813 [3]
The answer is 4 inches. This is because the scale is 1 inch=3 feet. And when doing 12ft divided by 3ft you get 4. The 4 then represents 4 inches. Hope it helps :)
4 0
3 years ago
A motorcycle can travel 70 miles per gallon. Approximately how many gallons of fuel will the motorcycle need to travel 60 km?
Likurg_2 [28]
5he answer would be d
4 0
3 years ago
Read 2 more answers
Other questions:
  • Which ordered pairs are solutions to the inequality y−4x≤−6 ?
    5·1 answer
  • Find the lengths of all four sides : P (2,2), Q (1,-3),R (-4,2),S (-3,7)
    13·1 answer
  • What is 1/18 plus 5/6 in simplest form
    8·2 answers
  • What is half of 750 i <br>really need help
    13·2 answers
  • What is 6x to the 3 fifths in radical form
    8·1 answer
  • What is a placebo and why is it important in an experiment to test the effectiveness of a drug
    7·1 answer
  • What is the perimeter of polygon lmnpq?
    7·1 answer
  • Find the length of the third side. If necessary, round to the nearest tenth.
    8·1 answer
  • Pls helpppoisisisisi
    15·1 answer
  • John and Sam went to eat pizza. They each decided to order a
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!