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3 years ago

F(x)=2log(-1/2x-1)+1

Mathematics

1 answer:

Annette [7]3 years ago

3 0

Answer:

i am sorry i dont now the answer but thx for the 14 point

love unkown name

Step-by-step explanation:

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hector serves ice cream at a local ice cream shop he sells 19 cream cones on Saturday,27 on Sunday,and 153 ice cream cones for t

Zina [86]

153-27-19= 107
Hector serves 107 ice cream cones on the weekdays. All you do is subtract the 2 weekend days from the total and you get the answer of the ice cream cones on the other 5 weekdays.
*If needed-- He would have sold about 21 cones each WEEKDAY*

7 0

3 years ago

Find the coordinates of the vertex of the following parabola algebraically. Write your answer as an (x,y)(x,y) point.

Archy [21]

Answer:

The coordinates of the vertex are (4 , 16)

Step-by-step explanation:

The coordinates of the vertex of a parabola which represents a quadratic equation y = ax² + bx + c are (h , k), where

h = $\frac{-b}{2a}$
k is the value of y at x = h

∵ The equation of the parabola is y = - x² + 8x

- Compare it by the form of the equation above to find a, b and c

∵ a is the coefficient of x²

∴ a = -1

∵ b is the coefficient of x

∴ b = 8

∵ c is the numerical term

∴ c = 0

The vertex of the parabola is (h , k)

∵ h = $\frac{-b}{2a}$

- Substitute the values of a and b

∴ h = $\frac{-8}{2(-1)}=\frac{-8}{-2}$

∴ h = 4

∵ k = y at x = h

- Substitute x by 4 and y by k in the equation

∵ k = - (4)² + 8(4)

∴ k = -16 + 32

∴ k = 16

∴ The coordinates of the vertex are (4 , 16)

5 0

4 years ago

The 7th-grade class took a survey on their favorite ice cream. 58 people said they prefer vanilla, while 28 people said they pre

zalisa [80]

Answer:

$a : b = 14 : 29$

Step-by-step explanation:

Given:

$Vanilla = 58$

$Chocolate = 28$

Required

Represent as ratio

Let chocolate be represented with a and vanilla be represented with b

So, we have:

$a : b$

$a : b = 28 : 58$

Divide ratio by 2

$a : b = 14 : 29$

Hence, the required ratio is $14:29$

3 0

3 years ago

Which equation demonstrates that use of a simple interest formula , l=PRT , to compute the investment earned on $70 at 3% For 12

Alenkinab [10]

Answer:

I = (70) x (0.03) x (12)

Step-by-step explanation:

The general formula of simple interest formula is: I = PRT where I = simple interest, P = principal amount, R = interest rate, T = time (in years). Given that the initial investment is $70, the interest rate is 3% (or 0.03 as a decimal) and the time is 12 years, you can form the following:

I = (70) x (0.03) x (12)

8 0

4 years ago

50 POINTS TO WHOEVER HELPS WITH THIS I NEED IT ASAP PLEASE HELP

Tresset [83]

Answer:

4a ) Difference ⇒ $ 63.24,

4b ) 4 children

Step-by-step explanation:

4a ) If the number of children is represented by the value of x, let us substitute a family of 2 children as value of x into this equation we are given;

y = 21.08 * ( 2 ) + 85.15 ⇒ Multiply 21.08 by 2,

y = 42.16 + 85.15 ⇒ Combine like terms,

y = 127.31

If y ⇒ amount spent on grocery's, let us solve for the amount spent on 5 children, and subtract from this amount;

y = 21.08 * ( 5 ) + 85.15 ⇒ Multiply 21.08 by 5,

y = 105.4 + 85.15 ⇒ Combine like terms,

y = 190.55

Difference; 190.55 - 127.31 = 63.24,

Solution; Difference ⇒ $ 63.24

4b ) If the amount is $ 169.47, let us plug it into our given equation provided amount spent on groceries ⇒ y;

169.47 = 21.08x + 85.15 ⇒ Subtract 85.15 from either side of equation,

21.08x = 84.32 ⇒ Divide either side 21.08,

x = 4 children

Solution; 4 children

7 0

3 years ago