3 years ago

1. Express 30 out of 40 and 40 out of 50 as a percentage. Which is the better score?

Mathematics

1 answer:

Ymorist [56]3 years ago

5 0

Answer:

30 out of 40: 75%

40 out of 50: 80%

40 out of 50 is the better score

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In the triangle shown, B=60 and AC=9√3 how long is AB answer exactly, use a radical if needed

zavuch27 [327]

Length of AB is 18

Step-by-step explanation:

Step 1: Find length of AB when AC = 9√3 and ∠B = 60°. Use trigonometric ratio sine.

sin 60 = opposite side/hypotenuse = 9√3/x

x = 9√3/sin 60

= 9√3/√3/2 = 9√3 × 2/√3 (∵ a ÷ b = a×1/b)

= 18

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3 years ago

Help! You can look at the picture please

viva [34]

Answer:

$\frac{3x}{3 - 2x}$

Step-by-step explanation:

Here,

f(x) = y

$y = \frac{3x}{2x + 3}$

or , swapping x with y

$x = \frac{3y}{2y + 3}$

now to solve for y we get

$y = \frac{3x}{3 - 2x}$

now we put f inverse x instead of y

${f}^{ - 1} (x) = \frac{3x}{3 - 2x}$

I am done.

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4 years ago

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ivann1987 [24]

Answer: Y= 2x

Step-by-step explanation:

1 x 2 = 2

3.4 x 2 = 6.8

5 x 2 = 10

7 x 2 = 14

So. Y = 2x

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3 years ago

You went to the mall with $80. You spent 25% of your money on a pair of shorts and 65% of the remainder on sandals. How much did

swat32

25% of 80 is 20
65% of 20 is 13
Your answer is 13

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3 years ago

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A bag contains 42 cups of dog food. Your dog eats 2 1/3 cups of dog food 1 point

Strike441 [17]

Answer:

It will last 18 days.

Step-by-step explanation:

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3 years ago

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