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
Alenkinab [10]
3 years ago
13

20. solve the equation by completing the square. round to the nearest hundredth if necessary. x^2+10x=18 a. -11.56, 1.56 b.11.56

, 1.56 c.-11.56, -1.56 d. 11.56, -1.56
Mathematics
1 answer:
larisa86 [58]3 years ago
8 0

The answer was A but  i am found

1.557, -11.557

and hope that helps you

You might be interested in
Which number produces a rational number when multiplied by 0.5?
irakobra [83]
6 because it makes 3
8 0
3 years ago
A math instructor assigns a group project in each of the scenarios below, the instructor selects 5 consecutive students from thi
SVETLANKA909090 [29]

Complete question:

Consider a class of 20 students consisting of 5 sophomores, 8 juniors, and 7 seniors. A math instructor assigns a group project in each of the scenarios below, the instructor selects 5 consecutive students from this class, keeping track (in order) of the level of the student that he gets.

1a. How many possible outcomes are in the sample space S? (An outcome is a 5- tuple of students.)

Let A2 denote the event that exactly 2 of the selected students are sophomore, A5 denote the event that exactly 5 of the selected students are the juniors, and A4 denote the event that exactly 4 of the selected students are seniors.

1b. Find the probabilities of each of these three events. A2, A5, A4

1c. Do the events A2, A5, A4 constitute a partition of the sample space?

Answer:

Given:

n = 20

a) The possible outcome in the sample space,S, =

ⁿCₓ = ²⁰C₅

= \frac{20!}{(20-5)! 5!)}

= \frac{20*19*18*17*16}{5*4*3*2*1}

= 15504

b) probabilities of A2, A5, A4

P(A2) = ⁵C₂ / ²⁰C₂

= \frac{20}{320} = \frac{1}{19}

P(A5) = ⁸C₅ / ²⁰C₅

= \frac{56}{15540} = \frac{7}{1938}

P(A4) = ⁷C₄ / ²⁰C₄

= \frac{35}{4845} = \frac{7}{969}

c) No,the events A2, A5, A4, do not comstitute a partition of the sample space. i.e P(A2)+P(A5)+P(A4) ≠ 1

5 0
3 years ago
15. Fruit the price of pears and apples is $14. The price of 3 pears and 9 apples is $21. Can you determine the unit prices for
Veronika [31]

Answer:

your answer gonna be $ 47 dollars

6 0
2 years ago
Last one i promise... thank u to everyone who helped
Harlamova29_29 [7]
B...because there is no y intercept because of the 0,0 then you just turn the other one into a fraction and because the 1 is negitive the fraction is negitive
3 0
3 years ago
Given that 8x−7y=32 Find x when y=2 Give your answer as an improper fraction in its simplest form. please help asap :((​
oksano4ka [1.4K]

Answer:

23/4

Step-by-step explanation:

The equation becomes 8x-7*2= 32

8x-14=32

+14 on both sides

8x = 46

divide by 8

x = 46/8

then simplify

x = 23/4

3 0
2 years ago
Other questions:
  • X^2 -18x +81=0 factor it
    7·1 answer
  • *PLS ANSWER CORRECTLY WITH DETAILS* What is the surface area of this regular pyramid?
    13·1 answer
  • Eight students are competing for a blue, red, and yellow ribbon for their agriculture project. How many different ways are there
    13·2 answers
  • At the gas station, each liter of gas costs $ 3 $3dollar sign, 3, but there's a promotion that for every beverage you purchase y
    13·1 answer
  • Find the unknown side length x. ​
    15·1 answer
  • Help me get this answer please
    14·2 answers
  • graph the number that represents the situation on a number line. please help with this question i will mark you brainliest!
    11·1 answer
  • Which set of ordered pairs is a function?
    13·1 answer
  • Stella needed to get her computer fixed. She took it to the repair store. The technician
    5·1 answer
  • A plumber notices a faucet leaking of a rate of 2 milliliters per second.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!