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3 years ago

12

In the united states in the 20th century, average life expectancy increased about 47 years to about 77 years. Find the percent o

f increase.

1 answer:

Alexandra [31]3 years ago

3 0

Answer:

well it increased by 30% if thats what you mean. i really hope this helped!

Step-by-step explanation:

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Maurinko [17]

B is the correct answer

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3 years ago

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Kryger [21]

Answer:

• From trigonometry ratios:

${ \boxed{ \rm{ \sin(A) = \frac{opposite}{hypotenuse} }}} \\$

opposite → 28
hypotenuse → 35

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3 years ago

Help please.................

olganol [36]

Answer:

(-4, 0) and (5/2, 0)

Step-by-step explanation:

if you graph the equation you can see where the curve intersects the x-axis or you can factor the equation into: (2x - 5)(x + 4) = 0

set each factor equal to zero and solve:

2x - 5 = 0

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x = 5/2

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3 years ago

1<br> Looking at the angle relationship below, what is the value of x?<br> 1<br> .<br> 45°

Andre45 [30]

Answer:

45

Step-by-step explanation:

They add up to 90, so 90 - 45 = 45 degrees

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3 years ago

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allochka39001 [22]

Circumference of a circle=2πr

Where r is radius

C=(2*2.2)π

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8 0

4 years ago