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
Anit [1.1K]
2 years ago
12

Please select the correct answer!

Mathematics
2 answers:
ioda2 years ago
7 0

Answer:

the value of x must be -2 . ie option b

Viefleur [7K]2 years ago
4 0

Answer:

x-1=-x²+2x+5

-x²+(2x-x)+(5+1)=0

-x²+x+6=0

(x-3)(x+2)

x=3 or x=-2

You might be interested in
What is the coordinates after (x+2, y + 3)
emmainna [20.7K]

Answer:

L is (2,4) M (3,1,) N(0,4)

Step-by-step explanation:

L 0+2=2 so x is 2

L 1+3=4 so y is 4

M 1+2=3 so x is 3

M -2+3=1 so y is 1

N -2+2=0 so x is 0

N 1+3=4 so y is 4

8 0
3 years ago
Mark and Henry win some money and share it in the ratio 4:3. Mark gets £9 more than Henry. How much did they get altogether?​
stepladder [879]
Answer:

A tiny guess, but I believe the answer is 63.

Explanation:

Well, since Mark would’ve had the 4 in the 4:3, that would mean each part would be 9 dollars.

So, if there seven parts in total, that would mean it’s...

7 • 9
63

Hopefully this helped!
3 0
3 years ago
Find a9 in the arithmetic sequence with a1=-2.75 and d=0.25
AleksAgata [21]
A9=A1+(n-1)
-2.75+(8*0.25)
-2.75+2=-0.75
3 0
3 years ago
Let X = the time between two successive arrivals at the drive-up window of a local bank. If X has an exponential distribution wi
LuckyWell [14K]

Answer:

a) E(X)=1

b) σ=1

c) P(X>1)=0.368

d) P(2<X<5)=0.128

Step-by-step explanation:

We have X: "the time between two successive arrivals at the drive-up window of a local bank", exponentially distributed with λ = 1.

a) We have to compute the expected time between two successive arrivals.

The expected value for X as it is exponentially distributed is:

E(X)=\dfrac{1}{\lambda}=\dfrac{1}{1}=1

b) We have to compute the standard deviation of X.

The standard deviation is calculated as:

\sigma=\dfrac{1}{\lambda}=\dfrac{1}{1}=1

c) The probability that X is larger than 1 (P(X>1))

We can express the probability as:

P(X>t)=e^{-\lambda t}\\\\P(X>1)=e^{-\lambda\cdot 1}=e^{-1}=0.368

d) The probability that X is between 2 and 5 (P(2<X<5))

P(X>t)=e^{-\lambda t}\\\\\\P(25)\\\\P(2

4 0
3 years ago
Given that f(x) = x^2 – 2x - 63 and g(x) = x + 7, find (f - g)(x)
Juliette [100K]

Answer:

(f - g)(x) = x² - 3x - 70

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Distributive Property

<u>Algebra I</u>

  • Combining Like Terms

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = x² - 2x - 63

g(x) = x + 7

(f - g)(x) is f(x) - g(x)

<u>Step 2: Find (f - g)(x)</u>

  1. Substitute:                               (f - g)(x) = x² - 2x - 63 - (x + 7)
  2. Distribute -1:                            (f - g)(x) = x² - 2x - 63 - x - 7
  3. Combine like terms (x):          (f - g)(x) = x² - 3x - 63 - 7
  4. Combine like terms (Z):          (f - g)(x) = x² - 3x - 70
3 0
3 years ago
Other questions:
  • Does -3 to any power give you 27 or does 27 to any power give you -3??
    10·2 answers
  • What is the product of (5/5)(614) ? Simplify your answer.
    6·1 answer
  • Paul runs a speed of 9 miles per hour. How many miles per second is his speed?
    6·1 answer
  • Divisibility rules 3 6 and 9
    10·2 answers
  • Can someone please help me on this problem
    11·1 answer
  • What two rows could you follow to write the ratio 16:28?
    12·2 answers
  • Find the 12th term of the geometric sequence 5, 20, 80, ...
    8·1 answer
  • I would like a little help please.
    10·1 answer
  • Which could be the graph of f(x) = |x - h| + k if h and k are both positive?
    11·2 answers
  • Simplify the following expression. 3x4 +2x3 - 5x2 + 4x2 +6x-2x - 3x4 + 7 x - 3x3​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!