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3 years ago

Find the mean of the data in the dot plot below.

Mathematics

2 answers:

Allushta [10]3 years ago

8 0

Answer:

the mean is 83.6

Step-by-step explanation:

Taya2010 [7]3 years ago

6 0

Answer:

The mean is 83.6 cm

Step-by-step explanation:

81 + 83 +84 + 85 + 85 = 416

416 divided by 5 = 83.6

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atroni [7]

1. B A C

Reason:

A: 4 $\pi$ is 12.6

B: the Square root of 18.7 is 4.32

2. a

Reason: the square root of 80 is 8.9, thus closest to 9 from all the others.

3. C

Reason: 6/7 = 0.86, and the square root of 3/4 = 0.87

3 0

3 years ago

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juin [17]

The linear equation would be N=2+3d. Plug in 6 for d and you get N=2+18 and then N=20. According to the linear model, there would be 20 box tops.

The exponential equation would be N=2^d. Plug in 6 for d and you get N=2^6 and then N=64. According to the exponential model, there would be 64 box tops.

7 0

3 years ago

1) △ABC has A(-2,-2), B(-1,2) and C(2,1). After a dilation centered at the origin, △A'B'C' has A'(-4,-4), B'(-2,4) and C'(4,2).

Sedaia [141]

Answer:

Option (C)

Step-by-step explanation:

If a point is dilated by a scale factor of 'k' about the origin,

Rule for the dilation,

(x, y) → (kx, ky)

By this rule, if ΔABC is dilated to form image triangle as ΔA'B'C',

A(-2, -2) → A'[2×(-2), 2×(-2)]

B(-1, 2) → B'[2×(-1), 2×(2)]

C(2, 1) → C'[2×(2), 2×(1)]

Therefore, scale factor of the dilation of the dilation will be k = 2

Option (C) will be the answer.

7 0

3 years ago

I need doing this please ?

Alex17521 [72]

Answer:

i do not know

Step-by-step explanation:

sorry

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3 years ago

I need to know how to answer this question and what the answers are for my Maths revision. Please help me I only have 2 days.

elena-s [515]

She has 300 g of minced meat.
The recipe calls for 400 g of minced meat.
What fraction of the amount of minced meat the recipe calls for does she have?
(300 g)/(400 g) = 3/4 = 0.75
She has 3/4 (or 0.75) of the amount of minced meat the recipe uses, so she needs to use 3/4 of all the other amounts.
Since 3/4 = 0.75, multiply each amount in the recipe by 0.75

Minced meat: 0.75 * 400 g = 300 g
(This confirms that the fraction 3/4 = 0.75 is correct.)

Tomatoes: 0.75 * 800 g = 600 g
Stock: 0.75 * 600 ml = 450 ml
Red wine: 0.75 * 300 ml = 225 ml

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3 years ago