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lozanna [386]
3 years ago
9

(-4 + x)/2 = 6 what does x equal?​

Mathematics
1 answer:
AnnZ [28]3 years ago
7 0

Answer:

(-4 + x)/2 = 6

-4+x/2 = 6

+4         +4

x/2 = 10

*2      *2

x = 20

Step-by-step explanation:

(-4 + x)/2 = 6

-4+x/2 = 6

+4         +4

x/2 = 10

*2      *2

x = 20

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45% of all 1st graders at Sierra Elementary School are female students. This year there are 54 female 1st graders at Sierra Elem
Anit [1.1K]

Answer:

There are 120 1st graders at Sierra Elementary School this year

Step-by-step explanation:

Let n represent the total number of 1st graders at Sierra Elementary School

Since 45% of all 1st graders at Sierra Elementary School are female students and this year there are 54 female 1st graders, 45% of n is equal to 54

→ n(\frac{45}{100}) = 54

→ 45n = 5400

→ n = 120

3 0
3 years ago
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PLZZ HELP I AM IN NEED WILL MARK BRAINLIEST!
Alexxandr [17]

Answer:

A: {(7, 12), (1, -5), (3, -10), (2, -5)}

Step-by-step explanation:

A relation should not have any repeating x values (or domains) in the group of coordinates.

B has 1 as all it's domains. B is not a function.

C lists 0 twice as it's domain. C is not a function

D lists 2 twice as it's domain. D is not a function

A is the best answer because it does not repeat any domains in the coordinates. A is a function.

6 0
4 years ago
What is the height of a triangle when the area is 36 cm and the base is 6 cm
pentagon [3]

Answer:

h = 12 cm

Step-by-step explanation:

Use the formula for area of a triangle A = (1/2)bh,   where b is the base, and h is the height.

Plug in the given information of A = 36, and b = 6, then solve for h

36 = (1/2)(6)h

  36 = 3h        (one half of 6 is 3     (1/2)(6) = 3     )

    12 = h        (divide both sides by 3 to isolate h)

6 0
4 years ago
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Question 1 of 10<br> f(x) = 3x³ - 2x² + 4x - 5<br> g(x) = 6x - 7<br> Find (f + g)(x).
satela [25.4K]
  • (f+g)(x)
  • f(x)+g(x)
  • 3x³-2x²+4x-5+6x-7
  • 3x³-2x²+4x+6x-5-7
  • 3x³-2x²+10x-12

Done!

6 0
3 years ago
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Simplify: 4(5x-1)-8x+11=?<br><br>Slove: -5(x+1)+3x=6-(4x-3)=?
suter [353]

Answer:

1. 12x+7

2. x=7

Step-by-step explanation:

1. 4(5x-1)-8x+11=?

multiply 4(5x-1)

20x-4-8x+11

Subtract 8x from 20x which is 12x

then subtract 4 from 11 which is 7

12x+7

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3 years ago
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