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11Alexandr11 [23.1K]

3 years ago

15

Hummingbird beat their wings many times per second which equation relates the number of beats per second (a) to the number of wi

ng per minute (b)
A.b=a+60
B.b=60/a
C.b=60a
D=a/60

1 answer:

blsea [12.9K]3 years ago

5 0

Answer:

B

Step-by-step explanation:

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Olivia family drove to Disney land For spring break. Her mom and dad shared the driving duties for a total of 14 hours. her mom

Kay [80]

Mom drove for 11 hours.

Dad drove for 3 hours.

<u>Step-by-step explanation</u>:

Total hours = 14 hours

Total distance = 895 miles

Mom drove a speed of 65 mph

Dad drove a speed of 60 mph

Let 'x' be the number of hours drove by mom.

Let 'y' be the number of hours drove by dad.

x + y = 14 ---------------(1)

65x + 60y = 895 ---------(2)

Multiply eq(1) by 60 and subtract eq(2) from (1),

60x + 60y = 840

-(<u>65x + 60y = 895</u>)

<u> -5x = -55 </u>

x = 55/5

x = 11

∴ Mom drove for 11 hours.

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11+y = 14

y = 3

∴ Dad drove for 3 hours.

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On a map, the distance between Los Angeles, CA and San Francisco, CA is 51.5 cm. What is the actual distance if the map scale is

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Step-by-step explanation:

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3 years ago

What is the answer to x-1=-5-x

maria [59]

Answer:

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Step-by-step explanation:

We have the equation $x-1=-5-x$

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