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liq [111]
3 years ago
9

X+12=30 i dont understand how to solve it plzz help

Mathematics
2 answers:
polet [3.4K]3 years ago
5 0

x+12 = 30

subtract 12 from each side

x+ 12-12 = 30 -12

x = 18

Answer x=18

ANTONII [103]3 years ago
4 0

To isolate x you would want to subtract 12 from both sides,

x=18


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The smallest number that must be added to 1300 to make it a perfect cube is
Black_prince [1.1K]

Answer:

d. 31.

Step-by-step explanation:

11^3 = 1331

31.

3 0
3 years ago
Plz i need this asap, if you do not know all of them, plz do not answer
Lelechka [254]
1. sqrt 52 = 7.211 rounds to 7

2. irrational number

3. sqrt 441 = 21....rational

4. 12^2 + 3^2 = h^2
    144 + 9 = h^2
     153 = h^2
      sqrt 153 = h
      12.4 = h <===

5. 6^2 + b^2 = 18^2
    36 + b^2 = 324
    b^2 = 324 - 36
    b^2 = 288
    b = sqrt 288
    b = 16.97 rounds to 17 <==

6. 39^2 + 52^2 = c^2
    1521 + 2704 = c^2
    4225 = c^2
    sqrt 4225 = c
    65 = c
    (39 + 52) - 65 = 91 - 65 = 26 miles shorter <==

7. 4^2 + b^2 = 16^2
     16 + b^2 = 256
     b^2 = 256 - 16
     b^2 = 240
     b = sqrt 240
     b = 15.49 rounds to 15.5 <==

8. ?
8 0
3 years ago
How many 3/4-cup servings are in 1/2 of a cup of milk? Write your answer in simplest form. Write your answer in a fraction.
GalinKa [24]

Answer:

3/8

Step-by-step explanation:

The question requires that we find the amount of 3/4 cup servings in 1/2 cup of milk

= 3/4 × 1/2

= 3/8

Hence the amount of cup servings is 3/8

6 0
2 years ago
Mike and Ike are twins. Mike’s age is one more than twice a certain number. Ike’s age is 10 less than triple that same number. F
Misha Larkins [42]
Mike age is 3 less then twice the age of his brother nuke.
M = Mike's age now
N = Nuke's age now
M = 2N - 3

Ten years ago, four times nuke's age was one more mike's age.
M-10 = Mike's age 10 years ago
N-10 = Muke's age 10 years ago
4(N - 10) = 1 + M -10

what are their present ages

find M and N

substitute M = 2N - 3 into 4(N - 10) = 1 + M -10:

4(N - 10) = 1 + [2N - 3] - 10
4N - 40 = 2N - 12
2N = 28
N = 14

M = 2(14) - 3 = 28 - 3 = 25

Mike is 25 and Nuke is 14.

check:
4(14 - 10) = 4(4) = 16 = 26 -10 = 1 + 25 - 10
4 0
3 years ago
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ladessa [460]

Answer:

a. x=1.8?

Step-by-step explanation:

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3 years ago
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