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2 years ago

8

Translate the sentence into an equation. Twice the difference of a number and 2 equals 9 . Use the variable y for the unknown nu

mber.

1 answer:

xxMikexx [17]2 years ago

8 0

Since difference is subtraction, that means that y-2=9 and by adding 2 to both sides we get y=11

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The cost of a postage is determined by the following step function: How much would a package that weighs 3 ounces cost, in cents

bija089 [108]

Answer:

I think its C) 43. Let me know what you get

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3 years ago

Riley set up a snack table for her dog's birthday party. She invited all the neighborhood dogs

katen-ka-za [31]

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2 years ago

Find the range. 4.7 6.3 5.4 3.2 4.9 3.1 –3.1 9.5 –9.5

WINSTONCH [101]

Answer:

The range is 19

Step-by-step explanation:

First, you have to order the numbers from least to greatest:

-9.5, -3.1, 3.1, 3.2, 4.7, 4.9, 5.4, 6.3, 9.5

Then, you have to find the difference between the largest number and and smallest number. You do this by subtracting them:

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2 years ago

How many and what type of solutions?

kolbaska11 [484]

Hello,

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3 0

3 years ago

3. Suppose the mystery bag had resulted in the following number of red chips. Using the simulated sampling distributions found e

Vinvika [58]

Answer:

a) 0.172

b) 0.167

c) 0.1404

Step-by-step explanation:

Margin of error, E = $2\times\sqrt{\frac{p(1-p)}{n}}$

here,

p = probability of the event

n = sample size

a) n = 30

p = 10 ÷ 30 = 0.333

Therefore,

E = $2\times\sqrt{\frac{0.333(1-0.333)}{30}}$

= 2 × 0.0861

= 0.172

b) n = 30

p = 21 ÷ 30 = 0.7

Therefore,

E = $2\times\sqrt{\frac{0.7(1-0.7)}{30}}$

= 2 × 0.0836

= 0.167

c) n = 30

p = 22 ÷ 50 = 0.44

Therefore,

E = $2\times\sqrt{\frac{0.44(1-0.44)}{50}}$

= 2 × 0.0702

= 0.1404

3 0

2 years ago