Belinda's shoe is 12.45 centimeters long. Felix's shoe is 2.8 centimeters longer than Belinda's shoe. In centimeters, what is the combined length of their two shoes?

Answer:

-69 (Answer b)

Step-by-step explanation:

Apply the power rule for differentiation:

(d/dx){-4x^2 + 11x} = -8x + 11

Now substute 10 for x:

f '(x) = -8(10) + 11 = -80 + 11 = -69 (Answer b)

Answer:

b

Step-by-step explanation:

Using the power rule to differentiate each term

Given

f(x) = - 4x² + 11x , then

f'(x) = - 8x + 11

At x = 10

f'(10) = - 8(10) + 11 = - 80 + 11 = - 69 → b

Answer:

$4

Step-by-step explanation:

We need to set up an algebraic expression to solve this problem:

 Let n= cost of a notepad

Let p= cost of a pen

 First set up an expression for Cynthia's purchase:

 cost of notepads*number of notepads + cost of pens*number of pens = total cost

 n*2 + p*3 = 40.30

 Rewrite as:

2n + 3p = 40.30

 Next, set up an expression for Annie's purchase:

 Here we will be using the same variables

  n*3 + p*5 = 61

 Rewrite as:

 3n + 5p =61

 Now, set up a system of equations:

 2n + 3p = 40.30

3n + 5p =61

 A system of equations can be solved in several ways, here I will use the addition/elimination method

For this method one of the variables must be able to be eliminated

Step 1: Pick a variable to eliminate

Here I will eliminate n

Step 2: make the selected variables in the equations equal and opposite so that they cancel out when the equations are added together

(2n + 3p = 40.30)(-3)

(3n + 5p =61)(2)

-6n - 9p = -120.90

6n + 10p = 122

Step 3: add vertically

-6n - 9p = -120.90

6n + 10p = 122

         p  =  1.10

Step 4: Figure out the other variable by inputting the answer you just got back into the original equation

2n + 3(1.10) = 40.30

2n + 3.30 = 40.30

      -3.30      37

         2n = 37

        /2     /2

         n = 18.5

One notebook = $18.50

One pen= $1.10

 18.50+1.10= $19.60

 2nd step

We must first set up an algebraic expression

 total=15 pencils

total=9 pens

 The total amount is the price of one pencil*15

 To figure out one pencil:

10 pencils are $24

1 pencil is $2.40

 Total= $36

 9 pens = 36

Therefore 1 pen is $4

Answer:

D

Step-by-step explanation:

substitute t=-3 in the equation

3(-3) squared +5(-3)+6=18

Step-by-step explanation:

According to the question , value of t = (-3) . So on directly putting t = (-3) in expression we have ,

[tex]\tt \to 3t^2 +5t+6 \\\\\tt\to 3(-3)^2+5(-3)+6 \\\\\tt\to (3)(9)-15 +6 \\\\\tt\to 27 - 15 +6 \\\\\tt\to \boxed{\orange{\tt 18 }}[/tex]

Answer:

7/22

Step-by-step explanation:

Area = 400/200 × 400/200 ×1/4 × 7/22 = 7/22

Step-by-step explanation:

Total distance covered in 200 rotation = 440 m

Distance covered in 1 rotation

= 440 / 200

= 2.2 m

Distance covered in 1 rotation = Circumference of circle so

circumference = 2πr

2.2 = 2 * 22/7 * r

2.2 = 6.28 r

r = 2.2 / 6.28

r = 0.35 m

Now Area of the wheel

= πr²

= 22 /7 * 0.35 * 0.35

= 0.385 m²

Hope it will help :)❤

Answer:

English Translation from G o o g l e T r a n s l a t e:

After a 20 percent discount on a phone, a 10 percent discount is given on the discounted price.

Assume x is phone cost

.2x + .1x

.3x

Is that what you needed?

G o o g l e Çeviri:

Telefonda yüzde 20 indirim yapıldıktan sonra indirimli fiyat üzerinden yüzde 10 indirim yapılıyor.

G o o g le Translate'den İngilizce Çeviri:

Telefonda yüzde 20 indirim yapıldıktan sonra indirimli fiyat üzerinden yüzde 10 indirim yapılıyor.

X'in telefon maliyeti olduğunu varsayalım

.2x + .1x

.3x

İhtiyacın olan bu muydu?

Answer:

Step-by-step explanation:

Find the area of the regular 18-gon with radius 10 mm

Answer:

An interval that will likely include the proportion of students in the population of twelfth-graders who carry more than $15 is 960

Step-by-step explanation:

For example, Condition 1: n(.05)≤N

• The sample size (10) is less than 5% of the population (millions of musicians), so

the condition is met.

• Condition 2: np(1-p)≥10

• =

2

10

= .2

• 1 − = 10 .2 1 − .2 = 1.6 . This is less than 10 so this condition is not

met.

It would not be practical to construct the confidence interval.

Answer:

b. 5z-10 = 5(z-2)    c. c-2c^2= c(1-2c)    d. r+r+r+r= r(1+1+1+1)= 4r   e. 2x-(1/2) = (1/2)(4x-1)

Explanation:

you just need to find a common factor that you can divide out  of each term. ex. with the 5z-10 both 5z and 10 are divisible by 5, so you can factor that out. to check the answers just multiply it. if you still don't get it, look up "factoring binomials"

Answer:

3.14

Step-by-step explanation:

Answer:

3.14

Step-by-step explanation:

Hi, pie in algebra is 3.14 when rounded up.

I hope this helps :)

9514 1404 393

Answer:

  68°

Step-by-step explanation:

Chords of the same length subtend arcs of the same measure.

  Chord EF = Chord FG . . . . given

  Arc EF = Arc FG = 68°

Answer:

Step-by-step explanation:

Diagonal through the interior of the cube is BG.

The rest are the diagonals of the faces.

Answer:

i think B

Step-by-step explanation:

i think B

Answer:

D is one (in my opinion)

Step-by-step explanation:

Only D works, because the two least (smallest) side lengths must exceed the greatest side length in order to actually construct a

Answer:

Maple grove associates

Step-by-step explanation:

Answer:

pt2 hope it helps

Step-by-step explanation:

Answer:

5/2 or 2 1/2, or 2.5

Step-by-step explanation:

We know that 4 1/2 is 4.5.

Take 4.5 to the other side.

h=2.5

By the way, can you follow me on Brainly?

Thanks!

Answer:

5/2, or 2 1/2

Step-by-step explanation:

To find the value of h you want to get h by itself, so you must subtract 4 1/2 from both sides of the equation. 4 1/2 can be rewritten as 9/2, but you must find a common denominator between 7 and 9/2. A common denominator can be 2, if 7 is changed into 14/2. The equation is now 14/2 - 9/2, which gives you 5/2 or 2 1/2.

Answer:

50.29 cm²

Step-by-step explanation:

Base area of a cylinder = πr²

π = 22/7

r = radius

For circular objects, the width is the same as the diameter of the object

the diameter is the straight line that passes through the centre of a circle and touches the two edges of the circle.

A radius is half of the diameter

radius = 8/2  = 4cm

Base area = (22/7) x 4² = 50.29 cm²

Answer:

about 23% decrease

Step-by-step explanation:

26-20=6

6 divided by 26 = 0.230

0.230 x 100 = 23

Answer:

24

Step-by-step explanation:

first work out the difference (decrease) between the two numbers you are comparing. Next, divide the decrease by the original number and multiply the answer by 100 to get the answer

Answer:

true

Step-by-step explanation:

Answer:

(3x+5)2 -4x

6x + 10 - 4x

2x + 10

Answer:

19/4

Step-by-step explanation:

Answer:

60% OF 6 = 3.6

         ↓

OF means multiplicatin

60% will turn into a decimal which is

↓

0.6 x 6 = 3.6 :)

Hope this helped!

-Maddison <3

Step-by-step explanation:

Answer:111/60=1.85

Step-by-step explanation: 185is answer

YOUR WELCOME (:

\

There is an association because the value 0.15 is not similar to the value 0.55

For the nutritionist to determine whether there is an association between where food is prepared and the number of calories the food contains, there must be an association between two categorical variables.

The conditions that satisfy whether there exists an association between conditional relative frequencies are:

1. When there is a bigger difference in the conditional relative frequencies, the stronger the association between the variables.

2. When the conditional relative frequencies are nearly equal for all categories, there may be no association between the variables.

For the given conditional relative frequency, we can see that there exists a significant difference between the columns of the table in the picture because 0.15 is significantly different from 0.55 and 0.85 is significantly different from 0.45

We can conclude that there is an association because the value 0.15 is not similar to the value 0.55

Answer:

B

Step-by-step explanation:

Answer:  The answer is J. because there are 180 pages in her book

Step-by-step explanation:

Answer:

The answer is "Not here" because there are 180 pages in Donna's book.

Answer:

See explanation

Step-by-step explanation:

The hypotenuse is the longest side of a triangle.

You could either add a point at (3,2) or (6,9) to make a right triangle and get the same answer, but for the sake of looking at it right-side-up, I'd use (3,2).

Now, you can use the distance vertically (y coordinate) from the top point to the bottom point ( 9 to 2 ) as your first side length. 9-2= 7, so 7 is that side length.

Then, you can use the distance horizontally (x coordinate) from the bottom left point (3,2) to the bottom right point (6,2). 6-3= 3, so 3 is that side length.

Now for the Pythagorean Theorem (a^2 + b^2 =c^2)

7^2 + 3^2 = c^2

49+9=c^2

58=c^2

c= [tex]\sqrt{58\\\\}[/tex] is the distance between points

Answer:

Step-by-step explanation:

In a pen there are 200 animals,

25 of which are ducks,

Number of turkeys

50% are turkeys

= 50% × 200

= 100 turkeys

and

Numbers of chickens

75% are chickens.

= 75% × 200

= 150

How many animals are ducks, turkeys and chickens?

Answer:

pls give brainlist

Step-by-step explanation:

a. [tex]\frac{50 blocks (L)}{9 blocks(W)\\}[/tex]  50 x 9 = 450. A=450

b. I can scale the unit rate of the area given above and largen the area of the map. Ex. [tex]\frac{7}{3}[/tex]=[tex]\frac{21}{6}[/tex] <---(scaled by 2)

Then we can enlarge it however we want so,

[tex]\frac{21}{6}[/tex] = [tex]\frac{42}{12}[/tex]  <--(scaled by 2 once more)

If the statement above is true then we can scale times 4.

[tex]\frac{7}{3}[/tex]= [tex]\frac{42}{12}\\[/tex] <---(scaled by 4)

A= [tex]\frac{42}{12\\}[/tex]

all i can give u at the moment , if u go on M a t h w a y it can help

Answer:

for them to get brainliest <3

Step-by-step explanation:

Answer:

i have made it in above picture

hope it helps