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
Olin [163]
2 years ago
5

What is equivalent tox2+ 14x = -13​

Mathematics
1 answer:
postnew [5]2 years ago
8 0

Answer:

X= 1 AND 13

Step-by-step explanation:

x2+14x = -13

by completing the square method

you add the square of half the coefficient of b to both sides

which is (14/2)^2

x^2+14x+(7^2) = -13 +(7^2)

x^2 + 7^2 = -13 + 49

x^2 + 7^2 = 36

(x + 7)^2 = 36

find the square root of both sides

(x+7) = + or - 6

x=7-6 ; 1

or

x= 7+6 ; 13

You might be interested in
I need help with this question
PtichkaEL [24]

Answer:A

Step-by-step explanation: because there is an association with the child’s hight and age so the answer is A ( plus I have did this before and got it wrong and the actual Answer was A when I picked B

6 0
2 years ago
Read 2 more answers
Riley started selling bracelets. During the first month she sold 400 bracelets at $10 each. She tried raising the price, but for
erik [133]

Answer:

b 12.50

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
3. What is the slope of a line that passes<br> through (0,-5) and (8,27)?
Elden [556K]

Answer:

4.

Step-by-step explanation:

Slope = difference in y coordinates / difference in the corresponding x coordinates

(27 - (-5)) / (8 - 0)

= 32 / 8

= 4.

6 0
2 years ago
Read 2 more answers
What’s the correct answer for this?
Lynna [10]

Answer:

A.

Step-by-step explanation:

tan x= 6/8

usually tan θ = perpendicular / base

So,

we get perpendicular = 6, base = 8

Now using Pythagorean Theorem to find hypotenuse

hyp² = base² + Perp²

hyp² = 8² + 6²

hyp²= 64 + 36

hyp²=100

Taking sq root on both sides

hypotenuse = 10

Now

sin θ = Perpendicular / Hyp

sin x = 6 / 10

Now

cos θ = base / Hyp

cos x = 8 / 10

6 0
3 years ago
A bank in the Bay area is considering a training program for its staff. The probability that a new training program will increas
WITCHER [35]

Answer:

P(B' \cup A') = P((A \cap B)') = 1-P(A \cap B)= 1-0.32=0.68

See explanation below.

Step-by-step explanation:

For this case we define first some notation:

A= A new training program will increase customer satisfaction ratings

B= The training program can be kept within the original budget allocation

And for these two events we have defined the following probabilities

P(A) = 0.8, P(B) = 0.2

We are assuming that the two events are independent so then we have the following propert:

P(A \cap B ) = P(A) * P(B)

And we want to find the probability that the cost of the training program is not kept within budget or the training program will not increase the customer ratings so then if we use symbols we want to find:

P(B' \cup A')

And using the De Morgan laws we know that:

(A \cap B)' = A' \cup B'

So then we can write the probability like this:

P(B' \cup A') = P((A \cap B)')

And using the complement rule we can do this:

P(B' \cup A') = P((A \cap B)')= 1-P(A \cap B)

Since A and B are independent we have:

P(A \cap B )=P(A)*P(B) =(0.8*0.4) =0.32

And then our final answer would be:

P(B' \cup A') = P((A \cap B)') = 1-P(A \cap B)= 1-0.32=0.68

5 0
3 years ago
Other questions:
  • Round 7180 and 4920 to the nearest 1000
    9·1 answer
  • Finke typing speed increased from 40 words per minute to 45 words per minute. What was the percent increase?
    10·1 answer
  • What is the value of |-2/3|?
    6·2 answers
  • a marathon runner ran the first 3 miles in 17.2minutes if she continues running at this pace how long will it take her to run th
    8·1 answer
  • I dont understand even where to begin on this, please help!​
    8·1 answer
  • Helpppp meee (10 points )
    6·1 answer
  • What is the particular solution to the differential equation dy/dx=(x+5)/y with the initial condition y(-4)=-6
    6·1 answer
  • 17.
    8·1 answer
  • List the next 4 multiples for the number 21.
    9·1 answer
  • I need the correct answers help pls
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!