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Crazy boy [7]
2 years ago
8

Which equation has the solution x = 5?

Mathematics
2 answers:
otez555 [7]2 years ago
7 0

Answer:

Here are your answers!

Step-by-step explanation:

x/5+5=6 is x=5.

18-2x=9 is NOT x=5, it is x=9/2

32-4x=12 is x=5.

11+6x=22 is NOT x=5, it is x - 11/6

3x+1=9 is NOT x=5, it is x = 8/3

25/x+4=9 is x=5.

Brainliest please!

AlekseyPX2 years ago
7 0

Answer:

\boxed{\bigstar \:\:\sf \cfrac{x}{5}+5=6}

\boxed{\bigstar\:\:\sf 32-4x=12}

\boxed{\bigstar\:\:\sf \cfrac{25}{x}+4=9}

_______________

\sf \cfrac{x}{5}+5=6

Subtract 5 from both sides:

\sf \cfrac{x}{5}+5-5=6-5

\sf \cfrac{x}{5}=1

Multiply both sides by 5:

\sf \cfrac{5x}{5}=1\times \:5

\boxed{\bold{x=5\: \:\checkmark }}

~~~~~~~~~~~~~~~

\sf 18-2x=9

Subtract 18 from both sides:

\sf 18-2x-18=9-18

\sf -2x=-9

Divide both sides by -2:

\sf \cfrac{-2x}{-2}=\cfrac{-9}{-2}

\boxed{\bold{ x=\cfrac{9}{2}}}

~~~~~~~~~~~~~~~

\sf 32-4x=12

Subtract 32 from both sides:

\sf 32-4x-32=12-32

\sf -4x=-20

Divide both sides by -4:

\sf \cfrac{-4x}{-4}=\cfrac{-20}{-4}

\boxed{\bold{x=5\:\: \checkmark }}

~~~~~~~~~~~~~~~

\sf 11 + 6x = 22

Subtract 11 from both sides :

\sf 11+6x-11=22-11

\sf 6x=11

Divide both sides by 6:

\sf \cfrac{6x}{6}=\cfrac{11}{6}

\boxed{\bold{x=\frac{11}{6}}}

~~~~~~~~~~~~~~~

\sf 3x + 1 = 9

Subtract 1 from both sides :

\sf 3x+1-1=9-1

\sf 3x=8

Divide both sides by 3:

\sf \cfrac{3x}{3}=\cfrac{8}{3}

\boxed{\bold{x=\frac{8}{3}}}

~~~~~~~~~~~~~~~

\sf \cfrac{25}{x}+4=9

Subtract 4 from both sides:

\sf \cfrac{25}{x}+4-4=9-4

\sf \cfrac{25}{x}=5

Multiply both sides by x:

\sf 25=5x

Let's Switch sides:

\sf 5x=25

Divide both sides by 5:

\sf \cfrac{5x}{5}=\cfrac{25}{5}

\boxed{\bold{ x=5\:\: \checkmark }}

<u>_________________________________</u>

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What is the sum of 1/9, 2/3,and 5/18? A.19/18 B.8/30 C.4/15 D.12/9
amm1812
1/9 times 2/2=2/18
2/3 times 6/6=12/18

2/18+12/18+5/18=(2+12+5)/18=19/18=1 and 1/8


A is answer
8 0
3 years ago
Find the area of a room that is 28 feet long and 46 feet wide?
Oxana [17]

Answer:

A =1288 ft^2

Step-by-step explanation:

A = l*w

A = 28*46

A =1288 ft^2

8 0
3 years ago
Read 2 more answers
1)Make an area model(Table) or a tree diagram to model all the possible combinations in this situation. 2)What is the theoretica
Ann [662]

Answer:

Example:

A bag contains 3 black balls and 5 white balls. Paul picks a ball at random from the bag and replaces it back in the bag. He mixes the balls in the bag and then picks another ball at random from the bag.

a) Construct a probability tree of the problem.

b) Calculate the probability that Paul picks:

i) two black balls

ii) a black ball in his second draw

Solution:

tree diagram

a) Check that the probabilities in the last column add up to 1.

b) i) To find the probability of getting two black balls, first locate the B branch and then follow the second B branch. Since these are independent events we can multiply the probability of each branch.

ii) There are two outcomes where the second ball can be black.

Either (B, B) or (W, B)

From the probability tree diagram, we get:

P(second ball black)

= P(B, B) or P(W, B)

= P(B, B) + P(W, B)

6 0
3 years ago
If triangle ABC is reflected over the y‐axis, reflected over the x‐axis, and rotated 180 degrees, where will point A' lie?
Ronch [10]

Given that ABC is a triangle and is reflected over the y - axis, reflected over the x - axis and rotated 180°

We need to determine the coordinates of the point A'

<u>Reflection over the y - axis:</u>

The coordinates of the point A is (-2,1)

The transformation rule to reflect across the y - axis is (x,y)\rightarrow (-x,y)

Substituting the point (-2,1) in the rule, we get;

(-2,1)\rightarrow (2,1)

Thus, the coordinates of the point A after reflection over the y - axis is (2,1)

<u>Reflection over the x - axis:</u>

The transformation rule to reflect across the x - axis is (x,y)\rightarrow (x,-y)

Substituting the point (2,1) in the rule, we get;

(2,1)\rightarrow (2,-1)

Thus, the coordinates of the point A after reflection over the x - axis is (2,-1)

<u>Rotation about 180°:</u>

The transformation rule to rotate about 180° is (x,y)\rightarrow (-x,-y)

Substituting the point (2,-1) in the rule, we get;

(2,-1)\rightarrow (-2,1)

Thus, the coordinates of the point A after the rotation about 180° is (-2,1)

Therefore, the coordinates of the point A' is (-2,1)

Hence, Option B is the correct answer.

7 0
3 years ago
What is the inverse of the given relation y = 7x² ?
beks73 [17]

Answer:

y = square root(x/7)

Step-by-step explanation:

switch x and y

x = 7y^2

solve for y

x/7 = y^2

square root(x/7) =y

y inverse is

y= square root(x/7)

7 0
2 years ago
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