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3 years ago

Please please help me!!!

Mathematics

1 answer:

Dafna1 [17]3 years ago

5 0

Answer is 40. A triangle equals 180 so all you do is subtract 65 and 75 from 180 to get your answer.

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Given the function f(x) = 6(x+2) − 3, solve for the inverse function when x = 21

nadya68 [22]

Hello,

f(x)=6(x+2)-3=6x+12-3=6x-9

y=6x-9==>x=6y-9==>6y=x+9==>y=(x+9)/6
if x=21 then y=(21+9)/6=30/6=5

f^(-1)(21)=5

4 0

3 years ago

89 more than the quotient of a number and 25 is 81.

agasfer [191]

X/25 + 89 = 81
x/25 = 81 - 89
x/25 = - 8
x = -8 * 25
x = - 200

The first one is true
I also believe the 3rd one is true.....u just forgot to put the " / " .

3 0

3 years ago

If the diver in item 2 leaves the board with an initial upward speed of 2.00 m/s, find the diver's speed when striking the water

Taya2010 [7]

Answer:

$v_f=9.0774m/s$

Step-by-step explanation:

Let's assume

initial velocity =vi

final velocity=vf

initial height =hi

final height =hf

acceleration due to gravity =g

we can use formula

$\frac{1}{2}v_i^2+gh_i= \frac{1}{2}v_f^2+gh_f$

we are given

$v_i=2m/s$

$h_i=2\times 2=4$

$h_f=0$

$g=9.8m/s^2$

now, we can plug values

$\frac{1}{2}(2)^2+(9.8)(4)= \frac{1}{2}v_f^2+(9.8)(0)$

now, we can solve for vf

$\frac{1}{2}(2)^2+(9.8)(4)= \frac{1}{2}v_f^2$

we get

$v_f=9.0774m/s$

4 0

3 years ago

Help I need help plis

Bezzdna [24]

Answer:

Step-by-step explanation:

Hopefully this helps

6 0

2 years ago

Read 2 more answers

On a map, in. Represents 20 mi. Two cities are 3 1/2 in. Apart on the map

Bad White [126]

The right answer is C) 70 miles.

6 0

3 years ago