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
iragen [17]
3 years ago
5

Solve the quadratic formula 2x^2+9x=-7

Mathematics
1 answer:
andriy [413]3 years ago
5 0

Answer:

Step-by-step explanation:

2x² + 9x = -7

2x² + 9x + 7 = 0

When we multiply we should get 2*7 = 14 and when we add we should get 9. Find the factors of 14 ---> 1,2,7,14. Factors are 2,7 as when we multiply we get 14 and we we add, get 9

2x² + 2x + 7x + 7 = 0

2x( x + 1) + 7 (x + 1) = 0

(x  + 1)(2x + 7) = 0

                   

You might be interested in
Suppose Z Varies directly with x and inversely with y, where x = 16, y = 4, when z = 32...............
Greeley [361]
A.)
Z = kx/y where k is a constant.
32 = 16k/4
k = 128/16
k = 8

z = 8x/y

b.)
Z = 8(21)/6
Z = 28

c.)
4 = 8x/48
x = 192/8
x = 24
6 0
3 years ago
Read 2 more answers
Sove: -6n+5&lt;11 <br> Which graph shows the solutions?
Dovator [93]

Answer: The first one

Step-by-step explanation: first you have to subtract 5 from both sides and then you have -6n < 6 . Then you have to divide both sides by -6 then you get n < -1.

8 0
2 years ago
[1 -4 3 5]+[-2 6 -2 4]
Rasek [7]

Step-by-step explanation:

[1-2 -4+6 3-2 5+4]

[-1 2 1 9]

4 0
2 years ago
Mai is making personal pizzas. For 4 pizzas, she uses 10 ounces of cheese. How much does she use on 1 pizza. How much does she u
jasenka [17]

Answer:

32.5

Step-by-step explanation:

10 ounces is in 4 pizzas so if we want 15 pizzas we need to count up

4 can not fit into 15 so we have to stop at 12 pizzas.

Now we need to add 3 pizzas

:Note: that one pizza is 2.5 of an ounce  out of 10 ounces

so after you add the 3 pizzas you have 15 but that wasnt 4 pizzas so you have 2.5 ounces left over you add those ounces to the 30 you got from the 12 ounces which you have 30 and add it to the ounces left over

2.5 + 30 = 32.5

3 0
2 years ago
The exterior angle measure of a regular polygon is 20 degrees. How many sides does the polygon have? 9 16 18 20
notka56 [123]
The polygon would have 18 sides. Hope this helps!
8 0
2 years ago
Read 2 more answers
Other questions:
  • What is 781 rounded to the nearest hundred
    14·2 answers
  • 1)Which equation models this problem?
    8·2 answers
  • Simplify 10d-3d ? Pls tell me I need help on this
    11·2 answers
  • ASAP Find the slope of The ordered pairs (0,-17),(2,13)
    5·2 answers
  • What is the expression 4c - 3 when c = 2
    13·1 answer
  • Juan had his car washed at the speedy clean car wash. He paid $20 for a car wash. He gave a 15% tip to the attendant who washed
    13·1 answer
  • Solve the system by substitution -4-y=17 and 4y=x
    14·1 answer
  • Find the measure of &lt;A​
    9·1 answer
  • Can anyone help me solve this problem?
    14·2 answers
  • Casey was at the surface of a swimming pool and recorded the following two measurements, in feet, on a number line:
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!