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
UNO [17]
3 years ago
5

Solve using the quadratic formula.

Mathematics
1 answer:
worty [1.4K]3 years ago
5 0
The quadratic formula is:
x =  \frac{ - b +  -  \sqrt{ {b}^{2}  - 4ac} }{2a}
so...
x =   \frac{ - ( - 1) +  -  \sqrt{( - 1)^{2} - 4(4)( - 7) } }{2(4)}
so simplified from calculator work

x =  \frac{1 +  \sqrt{113} }{8}  \: and \:  \frac{1 -  \sqrt{113} }{8}
You might be interested in
Erica brought three and a half yards of fabric if she uses two thirds of it how much will she have left
Alecsey [184]
3 1/2 - (2/3)(3 1/2) = 

<span>7/2 - (2/3)(7/2) = </span>

<span>7/2 - 7/3 = </span>

<span>21/6 - 14/6 = </span>

<span>7/6 or 1 1/6 yds</span>
8 0
3 years ago
Three kids play tennis at the same tennis courts. Mark plays every fourth day, David plays every seventh day and Bryan plays eve
jonny [76]

Answer:

Wednesday (9 weeks later) = 10th October.

Step-by-step explanation:

We label the days with the initials of the names.

M= 4

D = 7

B = 6

LCM of 6 +7 = 42

LCM of 6+7 + 4 = 84

We find 84 is the amount of days we need to add on to july 18th

We first find the weeks 84/7 = 9 weeks.

As Wednesday July 18th is exclusive it would be 84 days after this event.

18+ 84 = 102 days.

31 days in july = 31

31 days in Aug = 31

30 days in Sept = 30

= 92

102-92 = 10

We now know date is Wednesday 10th October

We can check 84 days = 9 weeks

13 days in July makes 31st july

31 days in Aug makes 31st Aug

30 days in Sept makes 30th Sept

= 74 days + 10 days = 84

10th October is the checked date and we know it is also a Wednesday as Wednesday had stayed exclusive and prove that there are 7 days in the week to account x 9, to account for an exact 9 weeks later duration.

6 0
3 years ago
Read 2 more answers
PLEASE HELP! Please I’m having a hard time with this I’ll be thankful
Arlecino [84]

Answer:

80 and 96

Step-by-step explanation:

80 and 96

7 0
3 years ago
Read 2 more answers
When yeast is combined with flour and other ingredients to make pizza dough is a _____.
mihalych1998 [28]

Answer:

Chemical

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
QUICK 20 POINTS !!<br> Use the equation machine to solve this equation.<br><br> x = __
KonstantinChe [14]

Answer:

x=2 (-7 , then -5 for the drag part)

8 0
3 years ago
Read 2 more answers
Other questions:
  • A rhombus and a square have one and the same side of 6 cm. The area of the rhombus is 4/5 of the area of the square. Find the he
    6·1 answer
  • Which side lengths form a right triangle 30 POINTS!! I DONT HAVE MUCH TIME
    8·2 answers
  • (8*10^7)(2*10^6) simplify the expression and write in scientific notation
    15·1 answer
  • jonah is planting a rectangular garden the perimeter of the garden is 120 yards and the width is 20 yards what is the length of
    15·1 answer
  • Compute the answers for this fish tank containing water.
    13·1 answer
  • ANSWER QUICKLY WILL MARK BRAIN!
    8·2 answers
  • Given a cube with a volume of 36 cm^3 what is the volume of a square pyramid that can fit perfectly inside the cube
    10·1 answer
  • Can anybody check and see if 11 and 12 are correct. I will Give Brainliest Answer.
    8·1 answer
  • Solve the rational equation
    5·1 answer
  • (9,4) and (5,-3) find the slope please !!!!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!