(20 PTS) Someone explain to me why this is the case

Answer:

Gina would receive $16 equivalent to 2^4 on Thursday from her grandfather

Step-by-step explanation:

A. 2^5

B. 2^4

C. 2^3

D. 2^2

Gina gets:

Monday =$2 = $2^1

Tuesday =$4 = $2^2

Previous day's amount get multiplied by 2

Wednesday = Tuesday's amount × 2

= $4 × 2

= $8

= $2^3

Thursday = Wednesday's amount × 2

= $8 × 2

= $16

= $2^4

Gina would receive $16 equivalent to 2^4 on Thursday from her grandfather

Answer:

the answer is 2^4

Step-by-step explanation:

Part (a)

Replace every 'a' with 5.2 and replace every 'b' with 4.7

Then use your calculator to evaluate.

3a + b^3 = 3*5.2 + (4.7)^3 = 119.423

===============================================

Part (b)

The true value is 119.423 which is the result of part (a)

The estimated value is 140

Subtract the two values

140-119.423 = 20.577

and divide that over the true value

20.577/140 = 0.14697857142858

Which, when rounded to 4 decimal places, we get 0.1470

Move the decimal place over to the right 2 spots to get 14.70%

Answer:

3,200

Step-by-step explanation:

Answer:

4000

Step-by-step explanation:

3200 x 250 = 800,000 x 0.1 = 80,000

4000 x 250 = 1,000,000 x 0.1 = 100,000

4200 x 250 = 1,050,000 x 0.1 = 105,000

5000 x 250 = 1,250,000 x 0.1 = 125,000

Answer:

8 and 9

Step-by-step explanation:

Since 77 is between 64= 8² and 81= 9²

Answer:

  16π ≈ 50.27 square units

Step-by-step explanation:

The equation is that of a circle of radius 4. The area of a circle is given by ...

  A = πr²

  A = π(4²) = 16π ≈ 50.27 . . . . square units

_____

The equation can be put into the standard form for a circle to find its radius.

  (x^2 -2x) +(y^2 +6y) = 6 . . . . collect variable terms on the left

  (x^2 -2x +1) +(y^2 +6y +9) = 6 + 1 + 9 = 16 . . . . . complete the squares

  (x -1)^2 +(y +3)^2 = 4^2 . . . . . the radius is 4

Compare to the form ...

  (x -h)^2 +(y -k)^2 = r^2 . . . . circle of radius r centered at (h, k)

Answer:

A. y = -16

Step-by-step explanation:

Hello!

What we do to one side of the equation we have to do to the other.

y + 7 = -9

We have to get y by itself so we have to get rid of the seven by doing the opposite of what it says

The opposite of addition is subtraction so we subtract 7 from both sides

y + 7 - 7 = -9 - 7

Solve

y + 0 = -16

Simplify

y = -16

The answer is A. y = -16

Hope this helps!

Answer:

Step-by-step explanation:

8x³ + 2x²  -20x - 5

= (8x³ + 2x²) + (-20x - 5)

= 2x² (4x + 1) + (-5)(4x + 1)

= (2x² - 5)(4x +1 )

Answer:

Step-by-step explanation:

[tex] \sf{0.5x - 7 = 0.3}[/tex]

Move 7 to right hand side and change it's sign

⇒[tex] \sf{0.5x = 0.3 + 7}[/tex]

Add the numbers

⇒[tex] \sf{0.5x = 7.3}[/tex]

Divide both sides of the equation by 0.5

⇒[tex] \sf{ \frac{0.5x}{0.5} = \frac{7.3}{0.5} }[/tex]

Calculate

⇒[tex] \sf{x = 14.6}[/tex]

Hope I helped!

Best regards!!

Answer:

Step-by-step explanation:

I don’t think I can type exponents here so I’ll write it and take a picture

Answer:

20 x 20 x 20 x 20 x 20= 3200000

20^6

Answer:

There are no like terms hence they stay the same

Step-by-step explanation:

x + (y + 9)

There are no like terms

=x+y+9

(x + y) + 9

There are no like terms

=x+y+9

Answer:get into it

Step-by-Stefan:

Answer:

  f(g(x)) = 2x +(-5)

Step-by-step explanation:

Put the argument value into the function and simplify the result.

  f(g(x)) = f(x -3) = 2(x- 3) +1 = 2x -6 +1

  f(g(x)) = 2x +(-5)

Answer:

it will drop to 33 degrees

Answer:

33 degrees

Step-by-step explanation:

Take the temperature and subtract 17 degrees

50 -17

33 degrees

Answer:

Step-by-step explanation:

Total cost

C (x) = 35+ 60x

Where,

Fixed cost= $35

Variable cost = 60x

x= number of hours of work

Total cost is the addition of fixed and variable cost

C (x) = 35+ 60x

C(5)= 35 + 60(5)

= 35 + 300

=335

C(5) = 335

C(5) = 335 is Olivia's total cost of hiring the electrician

x=5 is the electrician's number of hours of work

35= fixed cost of hiring the electrician

60(5) = 300 is the variable cost of hiring the electrician for 5 hours

Answer:

D.0

Step-by-step explanation:

Answer:

7/9

Step-by-step explanation:

Since a negative times a negative is positive, -(-1) becomes + 1 so the expression becomes -2/9 + 1. Using the commutative property of addition (a + b = b + a), we can rewrite this as 1 - 2/9. 1 = 9/9 so the expression becomes 9/9 - 2/9 = 7/9.

Answer:

slope = - 3

Step-by-step explanation:

The slope m of the line is calculated as

m = [tex]\frac{rise}{run}[/tex] = [tex]\frac{-6}{2}[/tex] = - 3

Answer:

12.7311111111111 on and on

Step-by-step explanation:

Answer:

the height of the cylinder is 40 meters

Step-by-step explanation:

Use the formula they give you for the volume, and the fact that it has to equal 1000 [tex]\pi[/tex] cubic meters. Recall also that the cylinder's radius is 5 meters:

[tex]Vol=\pi\,R^2\,h\\1000\,\pi= \pi\,(5)^2 \,h\\1000\,pi=\,\pi\,25\,\,h\\h=1000\,\pi/(25\,\pi)\\h=40 \,\,m[/tex]

Answer:

One possible answer is 0,1,1

Step-by-step explanation:

-1x-1 is 1

Answer:

d =122.5 miles

Step-by-step explanation:

We know the formula is

d= rt

d is distance   r = rate and t is time

d = 35 miles per hour * 3.5 hours

d =122.5 miles

Answer:

122.5 miles traveled

Step-by-step explanation:

35 miles x 3.5 hours = 122.5 total miles traveled

Answer:

<

Step-by-step explanation:

Step 1: Evaluate 2√40

2√40 = 12.6491

Step 2: Evaluate 7 + √63

7 + √63 = 14.9373

Step 3: Fill in inequality symbol

12.6491 < 14.9373

Answer:

Un paralelogramo es una forma plana con lados opuestos paralelos y de igual longitud.

Step-by-step explanation:

Los ángulos "a" y "b" suman 180 °, por lo que son ángulos suplementarios. NOTA: ¡Los cuadrados, rectángulos y rombos son todos paralelogramos

Espero que esto te ayude :)

Answer:

The answer is 31 pennies

Step-by-step explanation:

we have to find a number that gives a remainder of 1 when divided by both 2, 3 and 5.

The easiest way to do this is to list the factors of 5, add 1 to it, and test them until we find the one with a remainder of 1 by all three divisors. This is done as follows:

1) factor: 5 (+1) = 6

6 ÷ 2 = 3 remainder 0

6 ÷ 3 = 2 remainder 0

since there is a remainder of 0, when divided by 3, 6 is wrong

2) factor; 10 (+1) = 11

11 ÷ 3 = 3 remainder 2 ( 11 is not the correct answer

3) factor : 15 (+1) = 16

16 ÷ 2 = 8 remainder 0 ( 16 is  not the correct answer

4) factor : 20(+1) = 21

21 ÷ 3 = 7 remainder 0 ( 21 is wrong)

5) factor : 25(+1) = 26

26 ÷ 2 = 13 remainder 0 ( 26 is wrong)

6) factor : 30(+1) = 31

31 ÷ 2 = 15 Remainder 1

31 ÷ 3 = 10 Remainder 1

31 ÷ 5 = 6 Remainder 1

since all three divisors give a remainder of 1, the correct answer is 31

Therefore you have 31 pwnnies

Answer:

Below.

Step-by-step explanation:

This area = circumference of the base x height

= 2 * pi * 8 * 15

= 754.29 cm^2.

Answer:

The answer is 754.29cm^2

Step-by-step explanation:

radius= 8 cm

height= 15 cm

This is an area question

The formula to calculate the curved surface area will be,:

2 pile r  times h which will be = to: 2 pile r h

2 x 22/7/3.14 x the radius which is 8 x height which is 15.

2 x 22/7 x 8 x 15 =

754.29 cm^2.

Okay.

Answer:

x = 1

Step-by-step explanation:

The perimeter of the square is 4(2x + 3) = 8x + 12 and the perimeter of the triangle is 3x + 2(x + 3) + 5x + 4 = 10x + 10. Since they are equal, we can write:

8x + 12 = 10x + 10

-2x = -2

x = 1

Answer:

Step-by-step explanation:

Perimeter of a square = 4(a)

Where a = side=2x+3

[tex]P = 4(a)\\P= 4(2x+3)\\Perimeter \: = 8x +12[/tex]

Perimeter of a triangle =

[tex]a +b +c[/tex]

[tex]3x + 2(x+3) +5x+4\\3x +2x +6 +5x+4\\Simplify\\: \\3x+2x+5x = 10x\\6+4 =10\\\\= 10x+10[/tex]

[tex]8x +12 = 10x+10\\Collect like terms\\8x -10x = 10-12\\-2x =-2\\Divide\:both\:sides\:of\:the\:equation\:by \:-2\\\frac{-2x}{-2} = \frac{-2}{-2} \\\\x = 1[/tex]

=================================================

Explanation:

Points B, C, and D are midpoints of triangle AFE. This is due to the similar tickmarks showing how the segments are congruent (eg: AB = BE).

Because we have D and B as midpoints, this means segment DB is a midsegment of triangle AFE.

FE = 23.5, so half that is (1/2)*FE = 0.5*23.5 = 11.75 which is the length of DB.

The midsegment DB is half as long as FE, and DB is parallel to FE.

If FE=23.5 in triangle AFE then BD=11.75.

A triangle is a two dimensional figure having three sides, three angles. Two triangles are said to be congruent if all the corresponding sides and corresponding angles are equal.

We have been given the length of FE=23.5 and we have to find the length of BD. From the figure we have found that B,C and D are mid points of triangle AFE. This is due to the similar signs shown in the figure showing how the segments are congruent. Because we have D and B are mid points, this means segment BD is a mid segment of triangle AFE.

Therefore BD=1/2* 23.5= 11.75.

Hence if the length of FE=23.5 then the length of BD=11.75.

Learn more about triangles at https://brainly.com/question/1058720

#SPJ2

Answer:

1/36

Step-by-step explanation:

1/6 * 1/6 = 1/36

Answer:

First, combine like terms by combining the variables and constants. Then use properties of equality to isolate the variable and find the value for x.

Step-by-step explanation:

sample response from ed2020

Answer:

6 + t= 10

4 dog treats

Step-by-step explanation:

Luca took his dogs out for a walk.

He gave his dogs 6 dog treats.

Luca's dad came back home that same day and gave the dogs "t" more treats

This means "t" more treats added to the initial 6 treats.

6 + t

All together that same day, Luca's dogs got a total of 10 treats

6 + t = 10

Hence the equation to describe this situation can be written as 6 + t= 10

The number of treats that Luca's dad gave to the dogs can be calculated as follows

6 + t= 10

t = 10-6

t= 4

Hence the number of treats that Luca's dad gave to the dogs is 4 treats

Answer:

f she walks for 30 minutes, that means she was traveling at about 280 feet per minute (8,400÷30=280), or about 16,800 feet per hour

Step-by-step explanation:

Answer:

I believe its c

Step-by-step explanation:

The domain of a quadratic function is all real numbers

Answer:

See Below

Step-by-step explanation: