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
ch4aika [34]
3 years ago
11

The solution set of n2 − 14n = -45 is { }. (Separate the solutions with a comma)

Mathematics
2 answers:
olga55 [171]3 years ago
6 0
N=5, n=9 the 2 answers
White raven [17]3 years ago
5 0
N=9, n=5 are the correct answer's.
You might be interested in
A random sample of 12 recent college graduates reported an average starting salary of $54,000 with a standard deviation of $6,00
Marianna [84]

Answer: a.) $50188 to $57812

Step-by-step explanation: <u>Confidence</u> <u>Interval</u> (CI) is an interval of values in which we are confident the true mean is in.

The interval is calculated as

x ± z\frac{s}{\sqrt{n} }

a. For a 95% CI, z-value is 1.96.

Solving:

54,000 ± 1.96.\frac{6000}{\sqrt{12} }

54,000 ± 1.96\frac{6000}{3.464}

54,000 ± 1.96*1732.102

54,000 ± 3395

This means the interval is

50605 < μ < 57395

<u>With a 95% confidence interval, the mean starting salary of college graduates is between 50605 and 57395 or </u><u>from 50188 to 57812$.</u>

<u />

b. The mean starting salary for college students in 2017 is $50,516, which is in the confidence interval. Therefore, since we 95% sure the real mean is between 50188 and 57812, there was no significant change since 2017.

4 0
2 years ago
A map show a town with an area of 3.5 inches.If the map has a scale of 1 inch:4 miles,what is the actual area of the town?
cestrela7 [59]

Answer:

The actual area of the town is 14 miles.

Step-by-step explanation:

Since you know that the scale is 1 inch:4 miles and that the map shows a town with an area of 3.5 inches, you can expressed this as follows:

Scale: 1 inch:4 miles

map area: 3.5 inches

If the actual area is x, you can say that:

3.5:x=1:4

This would be:

\frac{3.5}{x}=\frac{1}{4}

Now, you can solve for x:

x=(3.5*4)/1

x=14

According to this, the answer is that the actual area of the town is 14 miles.

7 0
3 years ago
Como puedo salir de Brainly
sergey [27]

Answer:

push the x on the top left corner of the tab

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find the sum of the first 30 multiples of 8.
Anna11 [10]

Step-by-step explanation:

sum of the arithmetic sequence

a1 = 8

a2 = a1 + 8 = 8+8 = 16

...

an = 8×n

the sum of the first n elements of such a series is

n/2 × (2×a1 + (n - 1)×d]

with d being the difference between 2 consecutive elements (= the added constant).

so,

s30 = 30/2 × (2×8 + 29×8) = 15×(31×8) = 3720

3 0
2 years ago
HELP!!!In the expression 100 a/b, if a is greater than b, which statements are true? b ≠ 0. Select all that apply.
MAXImum [283]

Answer:

\large\boxed{\text{The expression is equal to}\ \sqrt[b]{100^a}}\\\boxed{\text{The expression is greater than 100}}

Step-by-step explanation:

a^\frac{m}{n}=\sqrt[n]{a^m}\\\\\text{True statement:}\\\\100^\frac{a}{b}=\sqrt[b]{100^a}\\\\a>b\to\dfrac{a}{b}>1\to\dfrac{a}{b}=1\dfrac{a-b}{b}\\\\100^\frac{a}{b}=100^{1\frac{a-b}{b}}=100^{1+\frac{a-b}{b}}=100^1\cdot100^\frac{a-b}{b}=100\sqrt[b]{100^{a-b}}\\\\a>b\to a-b>0\to100^{a-b}>1\\\\\text{Therefore}\ 100\sqrt[b]{100^{a-b}}>100

4 0
3 years ago
Other questions:
  • Plz help me with 15 and 16
    13·2 answers
  • The price of a watch was increased by 20% to £144. What was the price before the increase?
    11·1 answer
  • Whats 12.401-9.9 can someone one please help me​
    9·2 answers
  • Aaron is 5 years older than Bronwyn, Carl is 7 years older than Aaron and the sum of all their ages is 53 years. How old is Bron
    8·1 answer
  • I really need help on my math
    9·1 answer
  • helphelphelp helphelphelp helphelphelp helphelphelp helphelphelp helphelphelp helphelphelp helphelphelp helphelphelp helphelphel
    15·2 answers
  • What is the slope of the line through
    15·1 answer
  • 40 divided by 28! HURRY!!
    10·1 answer
  • REFLECTION:
    9·2 answers
  • Solve for d.<br> 41 = 12 d _ 7<br> d
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!