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
Vitek1552 [10]
3 years ago
12

5x² + 4x - 20 = 0 Solve this using the quadratic formula

Mathematics
1 answer:
Natali [406]3 years ago
8 0

Here's the answer, using the quadratic formula

You might be interested in
Which answer represents a proportional relationship?
allsm [11]
The second option with the chart
3 0
2 years ago
Please help me with this math problem
elena55 [62]

When a tangent line (13.5 cm) and a secant (lines x + 8.45 cm) intersect then:


tangent line^2 = 8.45 * (8.45 + x)


13.5^2 = 71.4025 + 8.45 x


182.25 -71.4025 = 8.45x


8.45 x = 110.8475


x = 13.1180473373


x = 13.1 (rounded)


Source:

1728.com/circangl.htm




4 0
3 years ago
The fourth term in an arithmetic sequence is 18 and the seventh term is 39. If the first term is a1 , which is an equation for t
evablogger [386]

Answer:

<h2>            aₙ = 7n - 10</h2>

Step-by-step explanation:

The nth term:  a_n=a_1+d(n-1)

So:

    a₄ = a₁ + 3d

18 =  a₁ + 3d   ⇒   3d =  18 - a₁

    a₇ = a₁ + 6d

39 = a₁ + 6d

39 = a₁ + 2(18 - a₁)

39 = a₁ + 36 - 2a₁

39 = 36 - a₁

a₁ = -3

3d = 18 - (-3)

3d = 21

d = 7

So the nth term:

                            a_n = -3 + 7(n-1)\\\\a_n=-3 +7n - 7\\\\a_n = 7n - 10

8 0
2 years ago
A box contains 8 white socks, 4 black socks and 2 blue socks. If you reach in and pull out one sock, what are the odds that it w
morpeh [17]
8+4+2=14
There's 4 black socks.
So 4/14
4 divided by 2 = 2
14 divided by 2 = 7
The answer is 2/7
A. 2/7

3 0
2 years ago
Make the biggest possible number using the digits below only once 0 , 3 , 4
Fynjy0 [20]

Answer:

12,157,665,459,057,000,000

Step-by-step explanation:

It seems like it would have to involve exponents.  3 to the 40th power would be 12,157,665,459,057,000,000.  

8 0
3 years ago
Read 2 more answers
Other questions:
  • Could anyone help me with this problem? I understand that you can cross multiply but is there a shorter way?
    10·1 answer
  • Wasted Water A faucet leaks 1 oz of water per minute. a) How many gallons of water are wasted in a year? (A gallon contains 128
    5·1 answer
  • Name the algebraic property demonstrated an example below: 3•(x•y)=(3•x)•y
    10·1 answer
  • Solve the equation.Find the product of each sum and difference. (2c + 8)(2c – 8)
    7·2 answers
  • Can someone solve -5x +2y=10
    11·2 answers
  • What is 5x8 + (10+9)
    14·2 answers
  • How to find 2% of 3000 <br> without a calculator
    13·1 answer
  • Pls help Will give brainiest
    13·1 answer
  • Anyone know the answer?
    12·1 answer
  • How long would it take to lose 30 pounds if you’re starting weight is 150
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!