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
iren [92.7K]
3 years ago
8

Plese help with 1 and 2​

Mathematics
1 answer:
Artist 52 [7]3 years ago
5 0

Step-by-step explanation:

1a. Would be 3 hours and 20 mins because you would times 20 by 10 which would then equal 200 minutes and then you would have to convert it to hours and minutes (60 mins in a hour).

1b. Would be 5 hours and you would solve it the same as 1a but different numbers.

1c. Would be 9 hours and 10 mins and once again you would solve it the same as 1a.

2. Your friend should reapply their sunscreen first because 25x 10= 250 mins 250 mins = 4 hours and 10 mins and 15x10=150 mins= 2 hour and 30 mins  and since you applied it an hour earlier you would subtract an hour  from your time which would then be 3 hours and 10 mins which is more time then your friends.

11:30 A.M. because two hours ahead of 9 is 11 and then you would need to add 30 mins to that.

You might be interested in
For the following figure, complete the statement for the specified points. Points R, T, B, and C are _____.
kipiarov [429]

Hey there,

The correct answer is: Both collinear and coplanar

:)

7 0
4 years ago
A researcher wishes to estimate the proportion of X-ray machines that malfunction. A random 275 sample of machines is taken, and
Dominik [7]

Answer:

Following are the solution to the given question:

Step-by-step explanation:

95\% Confidence Interval for both the percentage of all x-ray machines

p = the machinery's share is not working:

= \frac{228}{275}\\\\ = 0.829

\text{Margin of Error} = Z_{(\frac{\alpha}{2})} \times \sqrt{( p \times (1-p)}{n})

                         = 1.96 \times \sqrt{(0.829 \times \frac{0.171}{275})} \\\\= 1.96 \times 0.023 \\\\= 0.045

Lower 95\% Confidence interval = p - error margin = 0.829 - 0.045 = 0.784

Upper 95\% Confidence Interval = p + error margin= 0.829 + 0.045 = 0.874

So, 95\% Confidence Interval = ( 0.78 , 0.87 )

4 0
3 years ago
Hey guys! a friend and I are confused and could really use the help. could you explain why? thanks!
ziro4ka [17]

Answer:cant see it

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Points A, B, C, and D lie on the circle. Solve for the value of X
aliina [53]

Answer:

A 65

Step-by-step explanation:

The angle formed by two chords  is 1/2 the sum of intercepted arcs

x = 1/2 (51+79)

x = 1/2(130)

x =65

4 0
4 years ago
Read 2 more answers
NEED HELP IN THREE MATH QUESTIONS
RUDIKE [14]
I can'r see the problem
6 0
3 years ago
Other questions:
  • Vanessa purchased a smart TV for
    6·1 answer
  • Which formula gives the coordinates of the midpoint of the segment connecting points (a, b) and (c, d)?
    11·2 answers
  • The student activities department of a community college plans to rent buses and vans for a spring-break trip. Each bus has 40 r
    5·2 answers
  • At a new exhibit in the museum of science, people are asked to choose between 90 or 120 random draws from a machine. The machine
    7·1 answer
  • You deposit $675 in an account that earns 3.4% annul interest compounded twice a year. A. Write a function that represents this
    14·1 answer
  • Which correctly completes this number sentence?
    8·2 answers
  • The ratio of knights to horses in the kingdom were 4
    10·1 answer
  • Find the perimeter of the composite figure
    14·1 answer
  • PLEASE ANSWER FAST I NEED HELPPP
    7·1 answer
  • Find x and y <br> Show all the work
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!