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
jasenka [17]
4 years ago
15

School started at 8:05 a.m and ended at 2:40p.m. the work below shows Erica's calculation of the length of the school day

Mathematics
1 answer:
harina [27]4 years ago
7 0

Answer:

B. She subtracted the end time from the start time and

D. She did not account for a.m. and p.m. in the start and end times.

Step-by-step explanation:

The school started at 8:05 a.m. and ended at 2:40 p.m.

And the length of the school day is calculated by Erica and it is shown in the attached photo.

See the attached photo.

Erica has done two errors which are  

B. She subtracted the end time from the start time and  

D. She did not account for a.m. and p.m. in the start and end times. (Answer)

You might be interested in
What is the next number in the pattern: 3, 6, 7, 14, 15, 30, 31, 62, 63, …
Leviafan [203]
The pattern goes like this:
one number, the next number is the first number doubled, then the third number is the second number + 1, and so on.
So, you see that 3 * 2 = 6, and then 6 + 1 = 7, and so on. This means that you have to multiply 63 by 2, and get 126, and then add 1 to get 127.
So, the next number in the pattern is 126. 
3 0
3 years ago
Read 2 more answers
Solve the system of equations given by 5x - 2y = -6 and 15x - 6y = 6
AURORKA [14]

Answer:

8x - 3y = 12 _______( 1 )

5x = 2y + 7 _______( 2 )

On further solving ( 2 ), we get

5x - 2y = 7 _______( 3 )

Multiply ( 1 ) by 2

16x - 6y = 24 _______( 4 )

Multiply ( 3 ) by 3

15x - 6y = 21 _________( 5 )

Subtract ( 4 ) and ( 5 )

( 16x - 6y ) - ( 15x - 6y ) = 24 - 21

16x - 6y - 15x + 6y = 3

Put this in ( 2 )

5 ( 3 ) = 2y + 7

15 = 2y + 7

2y = 15 - 7

2y = 8

y = 8 / 2

Step-by-step explanation:

8 0
4 years ago
Xander needs to collect at least 120 cans for a food drive to earn community service credit. He has already collected 64 items.
Aleksandr [31]

Answer:

c ≥ 56   is the REQUIRED INEQUALITY.

Step-by-step explanation:

Here, the given  question is INCOMPLETE.

Xander needs to collect at least 120 cans for a food drive to earn community service credit. He has already collected 64 items. Choose the inequality and solution to represent the number of cans, c, that Xander must still collect.

Now, here:

The number of cans Xander needed to collect = At least 120

The number of items already collected =  64

c: the number of cans, c, that Xander must still collect.

Now, the number of cans to be collected  - Cans already collected  

=  120 - 64  = 56

So, the number of can he must collect to make a TOTAL OF AT LEAST 120 cans  =  56 cans

⇒ The number of cans to be collected ≥ 56 cans

⇒c ≥ 56 cans

or, c ≥ 56   is the REQUIRED INEQUALITY.

3 0
3 years ago
2. A company manufactures baseball bats. The fixed expenses are $58,780 and the variable expenses are $28 per baseball bat produ
Brilliant_brown [7]

Answer:

12,435 bats

Step-by-step explanation:

We need to figure out how many bats were produced.

First let's write the equation. Cost is $28 for each bat, and we start with fixed expenses of $58,780

y=28x + 58780

We are given y, total expenses at 406,960

so 406,960 = 28x + 58780

subtract 58780 from both sides

406,960 - 58,780 = 28x

348,180 = 28x

divide both sides by 28

12,435 = x

This means they produced 12,435 bats.

please give thanks by clicking the heart button :)

8 0
3 years ago
Twice the differencedifference of a number and 55 is equal to three times the sumsum of the number and 8.8.  
bazaltina [42]
2*(n-55)=3*(n+8.8)
2n-110=3n+26.4
-136.4=n
8 0
4 years ago
Other questions:
  • For the given system of equations, identify the type of system, a system of equations with the same solution, and the estimated
    12·1 answer
  • Please help I’ll mark brainlist
    6·2 answers
  • The cosine function is an odd function<br> true or false
    9·2 answers
  • Caitlyn did 6/7 of the problems on her maith quiz correctly and four incorrectly.She did all the problem.How many were there
    15·1 answer
  • Question 5: -4/7 x (-3/10) = ?<br><br> A: 7/70<br><br> B: -12/70<br><br> C: 7/17<br><br> D: 12/70
    14·1 answer
  • State the correct polar coordinate for the graph shown:
    13·1 answer
  • X10=15
    7·1 answer
  • Which of the following is a solution to this inequality?
    13·2 answers
  • Help....<br> 3c+8=14....<br> Thanks!! :)
    6·2 answers
  • In ΔTUV, the measure of ∠V=90°, the measure of ∠T=52°, and UV = 7 feet. Find the length of VT to the nearest tenth of a foot.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!