All categories

3 years ago

X(x-1)-x^2+2x=5 :))))))

Mathematics

2 answers:

Zina [86]3 years ago

4 0

Answer:

$x(x - 1) - {x}^{2} + 2x = 5 \\ {x}^{2} - x - {x}^{2} + 2x = 5 \\ \therefore \: x \: = 5$

AleksAgata [21]3 years ago

4 0

Answer:

x=5

Step-by-step explanation:

$x(x-1)-x^2+2x=5$

expand by using distributive property

$x^2-x-x^2+2x=5$

simplify

x=5

check work by substituting 5 into the original equation and simplify

use PEMDAS

$5(5-1)-5^2+2(5)=5$

$5(4)-25+10=5$

add and subtract (left to right)

20-25+10=5

5=5

The equation is true, thus x=5

You might be interested in

Please help me my mums gonna kill me if I fail this assignment.

Vika [28.1K]

Answer:

17 in,3 in, and 19in

so the third answer

Step-by-step explanation:

6 0

3 years ago

Jessica wants to rent a car for 4 days and she's interested in the collision damage waiver nut not the loss damage waiver. if th

Scorpion4ik [409]

The answer should be $238 you multiply the daily cost by 4 and add that to the CDW to get the total cost.
BRAINLIEST

6 0

3 years ago

Read 2 more answers

Assume a standard deck of 52 cards is being used. Find the possible way 2 black cards can be chose

GREYUIT [131]

We know there are 4 suites the deck can be divided into, and two of the 4 are black. So you divide 2/4, and get 1/2. So the probability that a black card will be chosen is 1/2.

7 0

3 years ago

Work out the size of one of the exterior angles

hodyreva [135]

Given Information :-

⠀

A polygon with 10 sides ( Decagon )

⠀

To Find :-

⠀

The value of one of the exterior angles

⠀

Formula Used :-

⠀

$\qquad \diamond \: \underline{ \boxed{ \pink{ \sf Exterior ~angle = \dfrac {360^\circ}{no. ~of~sides}}}} \: \star$

⠀

Solution :-

⠀

Putting the given values, we get,

⠀

$\sf \dashrightarrow Exterior ~angle = \dfrac{360 ^\circ}{10} \: \: \\ \\ \\ \sf \dashrightarrow Exterior ~angle = \frac{36 \cancel{0}^\circ}{ \cancel{10}} \: \: \\ \\ \\ \sf \dashrightarrow Exterior ~angle = \underline{ \boxed{ \frak{ \red{36^\circ}}}} \: \star \\ \\$

Thus, the value of the exterior angles of a Decagon is 36°.

⠀

$\underline{ \rule{227pt}{2pt}} \\ \\$

8 0

2 years ago

Read 2 more answers

Martin and Alexia are rock climbing each person's rate stays the same for the first hour they climb mountain climbers 3 1/3 mete

Minchanka [31]

1. If Martin climbs 3 1/3 meters in the first one 1/6 hour, then he climbs

$3\dfrac{1}{3}\cdot 6=\dfrac{10}{3}\cdot 6=20$ meters per hour. Then, option A is correct and options C and E are false.

2. If Alexia climbs 17 1/2 in the first 5/6 hour, then she climbs

$17\dfrac{1}{2}\cdot \dfrac{6}{5}=\dfrac{35}{2}\cdot \dfrac{6}{5}=21$ meters per hour and it takes Alexia $\dfrac{1}{21}$ of an hour to climb 1 meter. Then options B and D are correct and option F is false.

Answer: correct options are A, B and D.

7 0

3 years ago