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Strike441 [17]
3 years ago
11

Which of these is a two-step equation? A.X+ 9 = 21 B.x= 11+2 C.2x + 9 = 21 D.x/3 = 9

Mathematics
2 answers:
MissTica3 years ago
7 0
Answer: C

Explanation:
x+9=21
x=12

x=11+2
x=13

2x+9=21
2x=12
x=6

x/3=9
x=27
inysia [295]3 years ago
4 0
The answer would be C
2x + 9 = 21
1. 2x = 12
2. x = 6
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Please help me with this problem....5 stars 1 thanks and depending on how you answer brainiest.
Nutka1998 [239]

Answer:

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Step-by-step explanation:

Total Magazines = 3

Woman's Day = 1

Probability = No. of Favorable Outcomes  / Total no. of Outcomes

Probability = \frac{1}{3}

7 0
3 years ago
Read 2 more answers
4y + x = 12, 2x = 24 - 8y<br> Solve by Substitution
Ann [662]

Answer: Undefined

Step-by-step explanation:

4y+x=12, 2x=24-8y

Isolate x by subtracting 4y

4y+x=12

x=12-4y

Plug the equation for x in to anywhere you see the variable x in the other equation

2(12-4y)=24-8y

Distribute 2

24-8y=24-8y

Get the variables on one side so add 8y (cancels out)

24=24

Can’t solve its undefined

4 0
3 years ago
Weiming, Joyce and Siti divide cookies to sell in a ratio of 5: 12: 9. After Weiming sold 28 cookies, the ratio becomes 1: 8: 6.
Strike441 [17]

Answer:

216 cookies

Step-by-step explanation:

From the question,

Let the total cookies in the first place be x cookies.

Their ratio = 5:12:9

Total  = 5+12+9 = 26.

Weiming share = (5/26)x = 5x/26

If weiming sold 28 cookies

⇒ (5x/26)-28

⇒ (5x-728)/28

Hence Weiming new share = (5x-728)/28 cookies

The new ratio is 1:8:6

The total cookies becomes = x-28

Therefore,

(1/15)(x-28) = (5x-728)/28

(x-28)/15 = (5x-728)/28

Crossmultiply

28(x-28) = 15(5x-728)

28x-784 = 75x-10920

Collect like terms

28x-75x = -10920+784

-47x = -10136

x = -10136/-47

x = 215.7

x ≈ 216 cookies

8 0
3 years ago
What is the value of x in this simplified expression
arsen [322]

Answer:

7

Step-by-step explanation:

  • (-j)^-7 = 1/(-j)^x

Changing LHS as

  • 1/(-j)^7 = 1/(-j)^x

Comparing LHS and RHS

  • x = 7
8 0
3 years ago
SOMEONE, PLEASE HELP ME OUT!
harina [27]

Answer:

B

Step-by-step explanation:

Angle P and Angle Q are co- interior angles so they add up to 180 degrees

If angle P is 116, then:

116+ x= 180

(x= Angle Q)

x=180-116

x=64

7 0
3 years ago
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