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allochka39001 [22]
3 years ago
9

(MUST ANSWER. NOW!! 30 POINTS AND BRAINLEST) Phoebe drew a triangle with side lengths 3, 4, and 5. She wants to make a scaled co

py that is smaller than the original. Which scale factor below would make the triangle smaller?
1.) 1/2
2.) 1
3. )2
4.) 6
Mathematics
1 answer:
hoa [83]3 years ago
7 0
A) 1/2
Because this scale factor is smaller than 1, which means it’s making it smaller than the original.
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Is Polygon A a scaled copy of Polygon B? If so, what is the scale factor that takes B to<br> A?
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Step-by-step explanation:

Is Polygon A a scaled copy of Polygon B?what is the scale factor that takes B to

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One sample has a mean of M= 6, and a second sample has a mean of M = 12. The two samples are combined into a single set of score
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Answer:

a) 9

b) 10

c) 8

Step-by-step explanation:

We are given the following in he question:

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Mean of sample B = 12

Formula:

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

\dfrac{\displaystyle\sum x_a}{n_a} = 6\\\\\dfrac{\displaystyle\sum x_b}{n_b} = 12

a) original samples have n = 4 scores

\dfrac{\displaystyle\sum x_a}{4} = 6,\sum x_a = 24\\\\\dfrac{\displaystyle\sum x_b}{4} = 12,\sum x_b = 48\\\\\text{Combined mean} = \displaystyle\frac{\sum x_a + \sum x_b}{4+4}=\frac{24 + 48}{4 + 4} = 9

b) first sample has n = 3 and the second sample has n = 6

\dfrac{\displaystyle\sum x_a}{3} = 6,\sum x_a = 18\\\\\dfrac{\displaystyle\sum x_b}{6} = 12,\sum x_b = 72\\\\\text{Combined mean} = \displaystyle\frac{\sum x_a + \sum x_b}{3+6}=\frac{18+72}{3+6} = 10

c) first sample has n = 6 and the second sample has n = 3

\dfrac{\displaystyle\sum x_a}{6} = 6,\sum x_a = 36\\\\\dfrac{\displaystyle\sum x_b}{3} = 12,\sum x_b = 36\\\\\text{Combined mean} = \displaystyle\frac{\sum x_a + \sum x_b}{6+3}=\frac{36+36}{6+3} = 8

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3 years ago
During a 14-day period, there is the following activity on your bank account. You deposit $100, withdraw $75, deposit $85, and w
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The balance changes by:
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Need these questions answered. Thank you.
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The answer is b and d
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