The expression 18a-12 factored is

Mathematics

1 answer:

AlekseyPX2 years ago

5 0

Answer:

6(3a-2)

Step-by-step explanation: Both terms have a 6. Factor that our

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Solve the equation <br> 2 ( a + 10) = 56

Hatshy [7]

Answer: a = 18

explanation:
2(a + 10) = 56 -> distribute the 2
2a + 20 = 56 -> subtract 20 from both sides
2a = 56 - 20
2a = 36 -> divide both sides by 2
a = 18

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Ted pays $35 per hour for scuba class. Identify the constant of proportionality that relates his scuba class charges (y) to the

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a metal cube measures 2-centimeters on each side the mass of the cube is 72 grams what is the density of the metal cube

Umnica [9.8K]

Answer:

9 gram/cm³

Step-by-step explanation:

Volume of a square (L³) = 2³ = 8cm³

But Density = mass/volume

But Density = Mass/Volume

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3 years ago

Zara has forgotten her 4-digit PIN code. She knows the first digit is a factor of 20 and the 4 digits make a number divisible by

KatRina [158]

Answer:

800 different sets of digits.

Step-by-step explanation:

Since the first digit is a factor of 20, the factors of 20 are 1,2,4,5,10,20. We only need the single digit factors which are 1,2,4 and 5. These 4 numbers can be permuted in 1 way for the first digit, so we have ⁴P₁.

For the second digit, we have 10 digits permuted in 1 way, ¹⁰P₁ and also for the third digit, we have 10 digits permuted in 1 way, ¹⁰P₁ and for the last digit, which is divisible by 5, it is either a 0 or 5, so we have two digits permuted in 1 way, ²P₁.

So, the number of different 4 digit number that Zara'2 4-digit PIN code could be is ⁴P₁ × ¹⁰P₁ × ¹⁰P₁ × ²P₁ = 4 × 10 × 10 × 2 = 800 different sets of digits

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GCSE 995381

nikdorinn [45]

Answer:

$2.9 cm^2$