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Westkost [7]
3 years ago
7

Lauren reads in the library for 1 hour 15 minutes. She leaves the library at 3:23 pm. at what time did she arrive?​

Mathematics
1 answer:
kompoz [17]3 years ago
8 0
You can answer this problem by solving backwards. she read for 1 hour and 15 minutes so start with 1 hour before she left. 1 hour before 3:23 is 2:23. Now subtract the 15 minutes from that 15 minutes before 2:23 is 2:08.
Therefore the time is 2:08pm.
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Please help me answer this for a test im having trouble
Dimas [21]

Answer:

x + 1

y = 9

Step-by-step explanation:

In order to solve this question we need to represent "y "in terms of "x" in the first equation, and the plug in the "y" value in the first equation into the second one. Luckily for us in the first equation it already shows what "y" is equal to in terms of "x" (based on the first equation y = -x + 10). Now we just need to plug in the value that we got instead of "y" in the second equation, and so we get....

y = 7x + 2

(plug in the y value and get the following ….)

-x + 10 = 7x + 2

(now just solve the following equation)

-x + 10 + x = 7x + 2 + x

10 = 8x + 2

10 - 2 = 8x + 2 - 2

8 = 8x

8/8 = 8x/8

1 = x

Now that we know the value of "x", all we need to do now is substitute the value of "x" into any of the equations and we will get the value of "y". So we do the following.....

y =  7x + 2

y = 7(1) + 2

y = 7 + 2

y = 9

3 0
3 years ago
Explain why the sum 2x^2 + 4x^2<br><br>  is not equivalent to 6^4  <br>What is the correct answer?
Greeley [361]
6x^2 is the correct answer to the problem.
8 0
3 years ago
Read 2 more answers
4{3sqaured+4(116-8(2×8))} I need to know ASAP it 9:30 where I live pls hwlp
inysia [295]
Start with 8*2=16
116-8= 108
108(16)=1728
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The answer is 89,856
3 0
3 years ago
Does anyone know how to do this that could help me?!
Lunna [17]

Answer:

ask google they know or go to tiger.com algebra they can help you answer it gives you the answer and how they got it

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Use the rules of significant figures to find the answer to the addition problem S= 25.4+14+16.67+3.903
xenn [34]
S=59.973 all you have to do now is round it. So the real answer is S=60. All i did was add up all the numbers.
25.4 + 16.67 = 42.07 + 3.903 = 45.973 + 14 = 59.973
6 0
3 years ago
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