3 years ago

What is the rate in which the second quantity is one unit

1 answer:

4 0

When grades are expressed as a quantity of 1, such as two feet per second or 5 miles per hour, they are called unit rates.

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Using the sine rule, calculate the length y. Give your answer to 2 s.f.

Tpy6a [65]

Answer:

y = 9.84 mm

Step-by-step explanation:

Law of sine:

$\sf \boxed{\bf \dfrac{a}{Sin \ A}=\dfrac{b}{Sin \ B}= \dfrac{c}{Sin \ C}}$

a = y

A = 31°

b = 17 mm

B = 117°

$\sf \dfrac{y}{Sin \ 31^\circ}=\dfrac{17}{Sin \ 117^\circ}\\\\$

$\sf y = \dfrac{17}{Sin \ 117^\circ}*Sin \ 31^\circ\\\\ y = \dfrac{17}{0.89}*0.515\\\\y = 9.84 \ mm$

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2 years ago

24 is 75 percent of what number?

KonstantinChe [14]

the calculated percentage of 75 anf 24 is 18

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3 years ago

For two positive integers a and b define the function h(a,b) as the greatest common factor (g.c.f) of a,

Step2247 [10]

H times a equals ha times b

4 0

4 years ago

HELP PLEASE 25 points! y=-1/4(x+2)^2+1 vertex: axis: y-int: and then graph it

kolezko [41]

Answer:

x=-1/4

Step-by-step explanation:

this might be wrong

5 0

3 years ago

An airplane flies into the wind for 5 hours, traveling 900 miles. The airplane then

Musya8 [376]

Answer:

22.5 miles per hour

Step-by-step explanation:

<u>Given system of equations</u>

5(s-w)=900

4(s+w)=900

<u />

<u>Set equations equal to each other</u>

5(s-w)=4(s+w)

5s-5w=4s+4w

s-5w=4w

s=9w

<u>Solve for w using the substitution s=9w</u>

4(s+w)=900

4(9w+w)=900

4(10w)=900

40w=900

w=22.5

Therefore, the speed of the wind is 22.5 miles per hour

7 0

3 years ago