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
kenny6666 [7]
3 years ago
11

Plsss help mee quickkk !!

Mathematics
2 answers:
Kipish [7]3 years ago
8 0

Answer:

h=2.5 hours

Step-by-step explanation:

take the 30x3=90 then 195-90= 105 finally, divide 105 and 42 to get 2.5 hours!

30x3

195-90

105/2.5

hope this helps!

Andreyy893 years ago
5 0

Answer:

2.5 overtime hours

Step-by-step explanation:

90$+195$=285

390-285=105$

105/42=2.5 overtime hours

You might be interested in
A random sample of 10 parking meters in a beach community showed the following incomes for a day. Assume the incomes are normall
Vlad1618 [11]

Answer: (2.54,6.86)

Step-by-step explanation:

Given : A random sample of 10 parking meters in a beach community showed the following incomes for a day.

We assume the incomes are normally distributed.

Mean income : \mu=\dfrac{\sum^{10}_{i=1}x_i}{n}=\dfrac{47}{10}=4.7

Standard deviation : \sigma=\sqrt{\dfrac{\sum^{10}_{i=1}{(x_i-\mu)^2}}{n}}

=\sqrt{\dfrac{(1.1)^2+(0.2)^2+(1.9)^2+(1.6)^2+(2.1)^2+(0.5)^2+(2.05)^2+(0.45)^2+(3.3)^2+(1.7)^2}{10}}

=\dfrac{30.265}{10}=3.0265

The confidence interval for the population mean (for sample size <30) is given by :-

\mu\ \pm t_{n-1, \alpha/2}\times\dfrac{\sigma}{\sqrt{n}}

Given significance level : \alpha=1-0.95=0.05

Critical value : t_{n-1,\alpha/2}=t_{9,0.025}=2.262

We assume that the population is normally distributed.

Now, the 95% confidence interval for the true mean will be :-

4.7\ \pm\ 2.262\times\dfrac{3.0265}{\sqrt{10}} \\\\\approx4.7\pm2.16=(4.7-2.16\ ,\ 4.7+2.16)=(2.54,\ 6.86)

Hence, 95% confidence interval for the true mean= (2.54,6.86)

7 0
3 years ago
Fifteen more than twice a number is 9
Elden [556K]
2x+15=9
2x= -6
so the answer is -3
7 0
3 years ago
PLEASE HELP ASAP WILL GIVE BRAINLEIST !!
Nikitich [7]

Answer:

Step-by-step explanation:

Lenny had a rectangular deck that was 12 feet by 14 feet he wants to increase the length and width by the same amount and at 120 square feet to the total area what's the answer

5 0
3 years ago
Write an inequality for the sentence: The total t is less than sixteen.
RoseWind [281]
T<16 is your inequality.
7 0
3 years ago
250 tickets are sold at a church fundraiser. if sara buys 15 tickets the probability the probability that she will win the prize
laila [671]
<span>the probability the probability that she will win the prize quilt:
= 15/250 
= 0.06
= 6%

</span>
3 0
3 years ago
Other questions:
  • Can an expert help with this
    12·1 answer
  • After he completed his graduate work, he became a professor at
    9·1 answer
  • if a soup recipe calls for 1 cup of carrots for every 3 cups of chicken how many cups of carrots are needed if we have 18 cups o
    12·2 answers
  • Can someone just please explain why in PEMDAS for example: 6 + 9 ÷ 3 × 7. Why do you do the division (9/3) before the multiplica
    6·1 answer
  • Last year, James earned £1,300 per month.
    11·1 answer
  • Sarah took the advertising department from her company on a round trip to meet with a potential client. Including Sarah a total
    15·1 answer
  • Find the area of a hexagon, to the nearest tenth, with a side length of 8 and apothem of 6.9.
    12·1 answer
  • Ashley needs to be rise words on a vocabulary list for Spanish class she has never rise 18 of the words which is 2/3 of the list
    10·1 answer
  • What is the y-intercept of y = -32x - 2?
    14·2 answers
  • A rectangular vegetable garden will have a width that is 4 feet less than the length, and an area of 140 square feet. If x repre
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!