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soldi70 [24.7K]
4 years ago
15

Helpppp pleaseee X•1 + x/1=

Mathematics
1 answer:
dem82 [27]4 years ago
6 0

x * 1 + x/1 =

x + x =

2x

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Norachai traveled to the recycling plant and back. The trip back took 5 hours. He averaged 9mph faster on the trip there than on
irina1246 [14]

Answer:

His\ average\ speed\ to\ trip\ there\ =45\ mph\\\\His\ average\ speed\ in\ return\ trip=45-9=36\ mph\\\\His\ average\ speed\ during\ whole\ trip=40\ mph

Step-by-step explanation:

Let\ distance\ from\ one\ side=d

Trip:

Let\ speed\ when\ he\ was\ going=x\ mph\\\\Time\ taken=4\ hours\\\\distance=d\\\\distance=speed\times time\\\\d=x\times 4\\\\d=4x\ ...................................eq(1)

Return Trip:

Speed=x-9\ \ \ \ \ (as\ it\ is\ 9\ mph\ slower)\\\\Time\ taken=5\ hours\\\\Distance=d\\\\Distance=speed\times time\\\\Distance=5\times (x-9)\\\\d=5x-45\ ........................................eq(2)

from\ eq(1)\ and\ eq(2)\\\\5x-45=4x\\\\5x-4x=45\\\\x=45\ mph\\\\from\ eq(1)\\\\d=4\times 45=180\ miles

Average\ speed\ during\ whole\ trip=\frac{total\ distance}{total\ time}=\frac{2\times 180}{5+4}=\frac{360}{9}=40\ mph

His\ average\ speed\ to\ trip\ there\ =45\ mph\\\\His\ average\ speed\ in\ return\ trip=45-9=36\ mph\\\\His\ average\ speed\ during\ whole\ trip=40\ mph

8 0
3 years ago
How is a change in the circumference of a circle related to the diameter of a circle
zaharov [31]

Answer:

let's use c as circumference, d for diameter

lets say c increases, d is related to c, d will also increase

if c decreases, d will too.

Let's put in this way.

Pretend you're at a store,

The more you spend, the more points you get in their loyalty program

C is going to be the amount you spend

D will be how many points you get

Spend more, more points

spend less, less points

P.S

C is the independent variable, D is the dependent variable. (I think that's the right way, if not ignore the postscript aka P.S)

6 0
2 years ago
I WILL GIVE BRAINLIEST!!!! PLZ HELPS ASAP!!!
Phantasy [73]

Answer:

x = xi + delta x

-2+1 = -1

y = yi + delta y

-5+3 = -2

(-1,-2)

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The volume of a cube is 8 cm'. find th
Usimov [2.4K]

Answer:

side length a = 2 cm

Step-by-step explanation:

side length a = 2 cm

face diagonal f = 2.8284271247462 cm

solid diagonal d = 3.4641016151378 cm

surface area S = 24 cm^2

volume V = 8 cm^3

8 0
4 years ago
Write an expression using fractions to show how to determine the amount that each person will pay. Then calculate each person's
ehidna [41]
Okay so I don’t have a pen or paper so i’m going to have to write out every step on my phone, let me know if I lose you at any point.

the fraction would be 4/29.16, because you need to equality split the bill between 4 people.

the long division would be:

____________
4|29.16

4 does not go into 2 so place a zero over 2.

0___________
4|29.16

4 goes into 29 seven times, so place 7 over 9. subtract 7x4 from 29.16.

07._________
4|29.16
(-)28
————————-
= 1.16

4 goes into 11 (ignore the decimal and the 6 for now) 2 times. subtract 2x4 from 11.

07.2________
4|29.16
(-)28
————————-
= 1.16
(-) 8
————————-
= .36

4 goes into 36 9 times. subtract 4x9 from 36.

07.29_______
4|29.16
(-)28
————————-
= 1.16
(-) 8
————————-
= .36
(-) 36
————————-
= 0

so your answer would be each person would pay $7.29. I hope this makes sense!!
8 0
3 years ago
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