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
True [87]
3 years ago
12

What is the answer to 5/9(8+c)=-20

Mathematics
2 answers:
il63 [147K]3 years ago
8 0
5/9(8+c)= -20
⇒ 40/9+ 5/9c= -20
⇒ 5/9c= -20 -40/9
⇒ 5/9c= -24 4/9
⇒ c= -24 4/9/(5/9)
⇒ c= -44

Final answer: c= -44~
snow_tiger [21]3 years ago
5 0
\frac{5}{9} (8 + c) = -20 \\ \\  \frac{5(8 + c)}{9} = -20 \\ \\ 5(8 + c) = -20 \times 9 \\ \\ 5(8 + c) = -180 \\ \\ 8 + c = - \frac{180}{5} \\ \\ 8 + c = -36 \\ \\ c = -36 - 8 \\ \\ c = -44 \\ \\ Answer: \fbox {c = -44}
You might be interested in
Which of the following is an arithmetic sequence?
madreJ [45]

Answer:

A

Step-by-step explanation:

A is an arithmetic sequence with first term -2 and common difference 5.  Each new term is found by adding 5 to the previous term.

B is a geometric sequence with first term 1 and common ratio 1/2.

C is neither an arithmetic nor a geometric sequence.

D is neither.  We might call it an "alternating sequence."

8 0
3 years ago
HeLp PlzZzZ????? WiLL GiVe BrAiNlieSt<br> https://brainly.com/question/20643008
Tanzania [10]

Answer:

Where is the question?

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Find the first derivative of f'(a) using first principle, for the given value of
patriot [66]

Answer:

12.4

Step-by-step explanation:

5 0
3 years ago
"An ordinance requiring that a smoke detector be installed in all previously constructed houses has been in effect in a particul
Galina-37 [17]

Answer:

a) Probability that the claim is rejected when the actual value of p is 0.8 = P(X ≤ 15) = 0.0173

b) Probability of not rejecting the claim when p = 0.7, P(X > 15) = 0.8106

when p = 0.6, P(X > 15) = 0.4246

c) Check Explanation

The error probabilities are evidently lower when 15 is replaced with 14 in the calculations.

Step-by-step explanation:

p is the true proportion of houses with smoke detectors and p = 0.80

The claim that 80% of houses have smoke detectors is rejected if in a sample of 25 houses, not more than 15 houses have smoke detectors.

If X is the number of homes with detectors among the 25 sampled

a) Probability that the claim is rejected when the actual value of p is 0.8 = P(X ≤ 15)

This is a binomial distribution problem

A binomial experiment is one in which the probability of success doesn't change with every run or number of trials (probability that each house has a detector is 0.80)

It usually consists of a number of runs/trials with only two possible outcomes, a success or a failure (we are sampling 25 houses with each of them either having or not having a detector)

The outcome of each trial/run of a binomial experiment is independent of one another.

Binomial distribution function is represented by

P(X = x) = ⁿCₓ pˣ qⁿ⁻ˣ

n = total number of sample spaces = 25 houses sampled

x = Number of successes required = less than or equal to 15

p = probability of success = probability that a house has smoke detectors = 0.80

q = probability of failure = probability that a house does NOT have smoke detectors = 1 - p = 1 - 0.80 = 0.20

P(X ≤ 15) = Sum of probabilities from P(X = 0) to P(X = 15) = 0.01733186954 = 0.01733

b) Probability of not rejecting the claim when p= 0.7 when p= 0.6

For us not to reject the claim, we need more than 15 houses with detectors, hence, th is probability = P(X > 15), but p = 0.7 and 0.6 respectively for this question.

n = total number of sample spaces = 25 houses sampled

x = Number of successes required = more than 15

p = probability that a house has smoke detectors = 0.70, then 0.60

q = probability of failure = probability that a house does NOT have smoke detectors = 1 - p = 1 - 0.70 = 0.30

And 1 - 0.60 = 0.40

P(X > 15) = sum of probabilities from P(X = 15) to P(X = 25)

When p = 0.70, P(X > 15) = 0.8105639765 = 0.8106

When p = 0.60, P(X > 15) = 0.42461701767 = 0.4246

c) How do the "error probabilities" of parts (a) and (b) change if the value 15 in the decision rule is replaced by 14.

The error probabilities include the probability of the claim being false.

When X = 15

(Error probability when p = 0.80) = 0.0173

when p = 0.70, error probability = P(X ≤ 15) = 1 - P(X > 15) = 1 - 0.8106 = 0.1894

when p = 0.60, error probability = 1 - 0.4246 = 0.5754

When X = 14

(Error probability when p = 0.80) = P(X ≤ 14) = 0.00555

when p = 0.70, error probability = P(X ≤ 14) = 0.0978

when p = 0.60, error probability = P(X ≤ 14) = 0.4142

The error probabilities are evidently lower when 15 is replaced with 14 in the calculations.

Hope this Helps!!!

6 0
3 years ago
I NEED HELP!!!!!! 4x+2x-5=7x-1
yan [13]

Let's solve your equation step-by-step.

4x+2x−5=7x−1

Step 1: Simplify both sides of the equation.

4x+2x−5=7x−1

4x+2x+−5=7x+−1

(4x+2x)+(−5)=7x−1(Combine Like Terms)

6x+−5=7x−1

6x−5=7x−1

Step 2: Subtract 7x from both sides.

6x−5−7x=7x−1−7x

−x−5=−1

Step 3: Add 5 to both sides.

−x−5+5=−1+5

−x=4

Step 4: Divide both sides by -1.

−x

−1

=

4

−1

x=−4

Answer:

x=−4

i hope this helps you

3 0
3 years ago
Other questions:
  • There were 3,905 more hits on the schools website in January than February. February had 9,854 hits. How many hits did the schoo
    11·1 answer
  • Describe a pattern in each sequence. What are the next two terms of each sequence? 2, 4, 8, 16, . . .. . A. add 2 to the previou
    9·1 answer
  • -6/5 divided by 12/25
    12·1 answer
  • For each group of summer fruits, colour in<br> 1/2<br><br> NEED TO BE Done ASAP!!!
    15·1 answer
  • Lin runs 5 laps in 6 minutes how many laps per minute is that.
    5·1 answer
  • Find the discriminant and the number of real roots for this equation<br> 2 + 2x+7= 0
    6·1 answer
  • PLS HELP WITH SCREENHOT ASAP<br> I GIVE BRAINLIEST THANKS :)
    14·2 answers
  • 1
    6·1 answer
  • A recipe calls for 1/3 cup of brown sugar for 1 batch. How many batches can be made by one and two-thirds cups? 4 students drew
    15·1 answer
  • Which sentence is true!!??
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!