3 years ago

Which expression is equivalent to x^2+2x+2

Mathematics

1 answer:

Aneli [31]3 years ago

8 0

Do not click on that oh and I think the answer is a

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goblinko [34]

Answer:

O 81 km per hour

Explanation

Given parameters:

Number of days traveled = 3 days

Distance covered on the first day = 1080km

Time of travel = 10hrs

Rate of travel = 108km/hr

Time of travel on second day = 12hrs

Rate of travel = 90km/hr

Time of travel on third day = 18hrs

Rate of travel = 60km/hr

Unknown

Average speed = ?

To find the average speed, we sum the distances and divide by the sum of the time.

Average speed = $\frac{Total distance}{total time}$

we do not know the second and third distances;

Distance = speed x time

D2 = 90 x 12 = 1080km

D3 = 60 x 18 = 1080km

Now;

Average speed = $\frac{1080 + 1080 + 1080 }{10 + 12 + 18 }$

Average speed = $\frac{3240}{40}$ = 81km/hr

The average speed is 81km/hr

6 0

3 years ago

Sebastian buys a gift which costs £18.20 He pays with a £20 note. (a) How much change does he receive?

Triss [41]

Answer:

1.80

Step-by-step explanation:

i think

5 0

2 years ago

0 If 3x+ 11 = 86-5 the x = ?

evablogger [386]

The answer would be 23 1/3

7 0

3 years ago

Read 2 more answers

Write your answer using integers, proper fractions, and improper fractions in the simplest form

sattari [20]

Answer:

y = 1/4 x - 7/2

Step-by-step explanation:

x - 4y = 14

-4y = -x + 14

y = -x/(-4) - 14/4

y = 1/4 x - 7/2

6 0

3 years ago

E<img src="https://tex.z-dn.net/?f=e%5E%7Bx%7D%20-%20e%5E%7B-2%7D%20%3D-2" id="TexFormula1" title="e^{x} - e^{-2} =-2" alt="e^{x

pav-90 [236]

$e\cdot e^x -e^{-2}=-2$

$\implies e^{x+1}=e^{-2}-2$

note that RHS is negative. (because e with negative exponent is less than 1)

and LHS is always positive.

so there cannot be any solution

3 0

3 years ago