3 years ago

Really need help please

Mathematics

1 answer:

iris [78.8K]3 years ago

3 0

Its A. 10^15 because, 10^18 x 10^-3 = 10^18-3 = 10^15

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At a hardware store, each wooden plank costs $3.57. How much do 12 planks cost?

777dan777 [17]

To find this answer, we need to multiply 3.57 by 12.
$3.57 * 12 = 42.84$
Therefore, 12 planks will cost $42.84.

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3 years ago

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What is the value of x? A. 4 B. 4√3 C. 8 D. 8√3

SashulF [63]

Answer:

B. 4√3

Step-by-step explanation:

$\sin \: 60 \degree = \frac{x}{8} \\ \\ \therefore \: \frac{ \sqrt{3} }{2} = \frac{x}{8} \\ \\ \therefore \: x = \frac{8 \times \sqrt{3} }{2} \\ \\ \therefore \: x = 4 \times \sqrt{3}\\ \\ \huge \purple{ \boxed{ \therefore \: x = 4 \sqrt{3} }}\\$

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3 years ago

Car Survey 3,300 In a survey of people who owned a certain type of car,2,310 said they would buy that type of car again. What p

disa [49]

1155/3300 = 0.35
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35%

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3 years ago

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What is n-9 divided by 10=-2

DerKrebs [107]

The value of n is 11.

Step-by-step explanation:

The given expression is (n-9) ÷ 10 = -2

To find the value of n :

From the expression, it is determined that (n-9) is the numerator and 10 is the denominator.
Cross multiply the denominator in the left side of the expression to the another side.

The expression becomes (n-9) = (10 $\times$ -2).

⇒ n-9 = -20

Keep the n term on one side and the constants on other side.

⇒ n = -20+9

⇒ n = -11

Therefore, the value of n is 11.

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3 years ago

Please someone help me out asap! Need this done

Ksju [112]

Answer:

3^6

Step-by-step explanation:

3^8 * 3^-2

3^(8-2)

3^6

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3 years ago