MATHEMATICS MIDDLE SCHOOL

It takes you 5 hours to complete a 375-kilometer trip. What was your average speed on this trip?

Answers

Answer 1
Answer:

Answer:

75

Step-by-step explanation:

V=S/T(the formula)

V= 375/5

V=75
Answer 2
Answer: the answer would be 75 km/h

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5x+15y=10 5x-10y=-40

Answers

{ 5x + 15 y = 10
  5x  - 10 y = -40  * (-1)

{ 5 x + 15 y = 10
  -5 x + 10 y = 40
------------------------
             25 y = 50
                   
                 y = 50 / 25
                 
                 y = 2

For x :

5 x + 15 y = 10

5 x + 15*(2) = 10

5x + 30 = 10

5x = 10 - 30

5x = -20

x = -20 / 5

x = - 4

hope this helps!.
5(2y-8)+15y=10= 25y=50= Y=2
x=2y-8 and Y= 2
X=2(2)-8=-4
(X,Y)= (-4,2)

Deborah found that six of the 24 students in her class on a cell phone what is the ratio of students that own a cell phone to students that do not

Answers

so Deborah found 1/4 of the students had a cell phone and so what is left I think it will be this 4:1
Students that do own a cellphone . . . . . 6

Students that don't own a cellphone . . .  (24 - 6) = 18

Ratio of (students that do)  to  (students that do not)

         =                8                :                18

         =         1/3 . 

Let r>0 -π<θ<π be real. Calculate all the values ofRe( (ln(z))/(z))

where z=r(cos(\theta)+sin(\theta)).

Answers

For a real z, ln(z)/z is always a real number, so the Re() is quite useless.

Thus we just need to write ln(z)/z=ln(r)+ln(\cos(\theta)+\sin(\theta)), and we can't simplify any more.

Nora started a business making bracelets. She spent $75.00 on advertising and $35.00 on supplies. She sells each bracelet for $1.50. What is the least number of bracelets Nora needs to sell to make money than she spent? Show your work.

Answers

$75 ads + $35 supplies = $110.

110 / 1.50 = 74.

Why did I divide? we take the money she spent and divide by the cost of a bracelet to figure out how many she needs to sell to get $110.

74 bracelets need to be sold.

HELP ME PLEASE! I NEED HELP

Answers

Answer:

5

5.7

7.1

6.9

Step-by-step explanation:

|4 - 9| = 5

|-3.1 + 8.8| = 5.7

|-7.1| = 7.1

|2.7 + 4.2| = 6.9

A rectangle has a perimeter of 18 cm.its length is 5 cm greater than its width.find the dimensions.

Answers

p=18
l=5 cm greater than the width
w=5 less than the length

USE YOUR NUMBER SENSE!!! - just plug in different number below 4 to figure out the width

3=w  3+5=8 8+8=16+6=22    WILL NOT WORK

2=w   2+5=7  7+7=14   14+2+2= 18    WE HAVE A WINNER!!!!

FInal Answer: width: 2 cm and length: 7 cm
                          
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