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3 years ago

10

In ^ABC, AB = 7, BC = 10, and m is b? A. 13.2. B. 12.2 C. 11.2 D. 9.1

1 answer:

Genrish500 [490]3 years ago

7 0

Answer:

c

Step-by-step explanation:

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olganol [36]

Answer:

equal to 2

Step-by-step explanation:

50% is the same as 1/2 of 4

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3 years ago

What is equivalent to 2(d+4)

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3 years ago

Find the value of the following expression: (3^8 ⋅ 2^-5 ⋅ 90)−2 ⋅ ⋅ 3^28 (5 points) Write your answer in simplified form. Show a

Darya [45]

18452.8125 use PEMDAS

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3 years ago

How do I simplify the expression 7^0+7^2 over (7^3)^2

AlekseyPX

$\frac{7^0+7^2}{(7^3)^2}=\frac{1+49}{7^6} = \frac{50}{117649}$

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2 years ago

Two train whistles have identical frequencies of 180 Hz. When one train is at rest in the station, sounding its whistle, a beat

alexgriva [62]

Answer:

7 m/s

Step-by-step explanation:

We are given that

Frequency at stationary = $f_0=180Hz$

Beat frequency=3.7 Hz

Apparent frequency= $f=180+3.7=183.7Hz$

Speed of sound=v=345 m/s

We have to find the speed of train

Apparent frequency= $f=f_0(\frac{v}{v-v_s})$

Substitute the values then we get

$183.7=180(\frac{345}{345-v_s})$

$345-v_s=\frac{180\times 345}{183.7}$

$345-v_s=338$

$v_s=345-338=7 m/s$

Hence, the speed of train=7 m/s

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4 years ago