Noah jumped rope for 9 minutes. What percentage of Diego’s time is that? Diego's time is 20.

Answers

Answer 1

Answer:

45%

Step-by-step explanation:

Diego's time is 20 and a whole is 100% so multiply 9 by 5 because 20 x 5 is 100 9x5=45. This means Noah's time is 45% of Diego's time

Answer 2

Answer:

45% or 45 percent

Step-by-step explanation:

Yes oof


Related Questions

A car rental companies standard charge includes an initial fee plus an additional fee for each mile driven. The standard charge (in dollars) is given by the function , where is the number of miles driven. The company also offers an option to insure the car against damage. The insurance charge (in dollars) is given by the function . Let be the total charge (in dollars) for a rental that includes insurance. Write an equation relating to . Simplify your answer as much as possible.

Answers

The rental's total charge that includes insurance, represented by T(m), is the sum of the standard charge function C(m) and the insurance charge I, as in the equation T(m) = C(m) + I.

The question provided is incomplete as the functions for the standard charge and the insurance charge are not specified. However, assuming the functions are given by C(m) for the standard charge, where m is the number of miles driven, and I for the insurance charge, the total charge would be represented by the function T(m). The equation that relates the total charge to both the standard charge and the insurance charge would therefore be T(m) = C(m) + I. Simplifying the equation does not apply in this case as the individual functions are not provided for further manipulation.

20 POINTS PLEASE HELP
Identify a zero of the function x^2+2x-3
a) -3
b) -1
c) 0
d) 2

Answers

Answer:

A

Step-by-step explanation:

Essentially, if we plug in any of the given choices into the function and we get 0, then that's our answer.

A) (-3)^2 + 2 * (-3) - 3 = 9 - 6 - 3 = 0  -  correct

B) (-1)^2 + 2 * (-1) - 3 = 1 - 2 - 3 = -4  -  incorrect

C) 0^2 + 2 * 0 - 3 = -3  -  incorrect

D) 2^2 + 2 * 2 - 3 = 4 + 4 - 3 = 5  -  incorrect

So, the answer is A.

The alternative, more "formal" way of doing this problem is to factor the quadratic: x^2 + 2x - 3 = (x + 3)(x - 1) = 0

Then set each of these equal to 0: x + 3 = 0 and x - 1 = 0

We get the values of x = -3 and x = 1. Only -3 is one of the answer choices, so A is correct.

Hope this helps!

Answer:

a) -3

Step-by-step explanation:

Zero of a function is the x-value where y = 0

x² + 2x - 3 = 0

x² + 3x - x - 3 = 0

x(x + 3) - (x + 3) = 0

(x - 1)(x + 3) = 0

x = 1, -3

The slope of the graph of y = -7x is what?

Answers

Answer:

-7

Step-by-step explanation:

In y = mx + c,

m is the slope

m is the coefficient of x

in y = -7x,

m = -7

2) To bake a cake, we need 2 eggs for every cup of sugar. If we need to make 21 cakes for a bake sale how many eggs and cups of sugar will we need?

Answers

Step-by-step explanation:

It means every cake needs 2 eggs and 1 cup of sugar

So first we will multiply 21 by 2 to get the number of eggs = 21 ×2 = 42

So answer is 21 cups and 42 eggs

Leslie has a rectangular patio. She measures it and finds out it is 2135 feet long by 1115 feet wide. She wants to know how many square feet of tile she will need to completely cover the patio. Draw the patio, and label the measurements. How much tile will Leslie need to cover the patio? If each square foot of tile costs 75 cents, how much will she have to pay to cover her patio?

Answers

Answer: (1) Leslie will need 2,380,525 square tiles (1 foot by 1 foot each)

(2) She will have to spend $1,785,393.75 to cover her patio.

Step-by-step explanation: Please refer to the picture attached.

The rectangular patio has been designed and as shown in the diagram has on side measuring 2135 ft and the other side measuring 1115 ft. This means, in order to cover the entire patio, she would have to cover an entire area defined as 2,135 feet into 1,115 feet. If one tile measures 1 foot long by 1 foot wide, the total number of tiles to cover the patio can simply be derived as;

Area = L x W

Where the length is 2135 and the width is 1115,

Area = 2135 x 1115

Area = 2380525

**Having in mind that one tile measures 1 ft by 1 ft, the area of each tile is given as

Area = L x W

Area = 1 x 1

Area = 1 square foot**

(1) The above calculation shows that Leslie would be using up a total of 2,380,525 square tiles to completely cover her patio.

(2) Having been told that each square foot of tile costs 75 cents ($0.75), the total amount spent to cover her patio would be calculated as follows;

Cost = Area x cost per tile

Cost = 2380525 x 0.75

Cost = 1785393.75

The total cost therefore is $1,785,393.75

Leslie needs [tex]\( 2380025 \)[/tex] square feet of tile, and it will cost her [tex]\( \$1785018.75 \)[/tex] to cover her patio.

1. Calculate the area of the patio:

  [tex]\[ \text{Area} = 2135 \times 1115 = 2380025 \text{ square feet} \][/tex]

2. Calculate the total cost of tiles:

[tex]\[ \text{Total cost} = 2380025 \text{ square feet} \times \$0.75/\text{sq ft} = \$1785018.75 \][/tex]

Therefore, Leslie needs [tex]\( 2380025 \)[/tex] square feet of tile, and it will cost her [tex]\( \$1785018.75 \)[/tex] to cover her patio.

Que es la mitad de 5

Answers

Answer:

2,5

Step-by-step explanation:

es decimal porque es un numero impar

Answer:

2.5

Step-by-step explanation:

básicamente, dividirías 5 y 2. No hagas 2 y 5. Eso te dará un número completamente diferente y no querrás un decimal de la fracción 2/5. Quieres la mitad de 5. ¡Entonces será 2.5! Lo siento, estoy usando el traductor de Google.

During the winter months there is a decrease of between 10 and 30 percent in business which of the following could not be the percent winter business is of the normal business

Answers

Answer: 30

Step-by-step explanation:

8(2x-14)+13=4x-27
I need help

Answers

Since

2
1
1
=

1
0
8
−211=−108 is false, there is no solution.

Answer:

12/70

Step-by-step explanation:

expand brackets

16x-112 + 13 = 4x-27

16x - 99 = 4x-27

16x= 4x + 70

12x=70

x = 12/70

Patricia needs 10 yards of fabric to make curtains for her bedroom she also needs 3 yards of fabric to make a cover for her storage bench Patricia has 15 feet of fabric how many more feet of fabric does she need

Answers

Answer:

24 feet

Step-by-step explanation:

According to the question, Patricia needs 10 yards of fabric to make curtains for her bedroom she also needs 3 yards of fabric to make a cover for her storage bench

So, she needs 13 yards

converting into feet

1 yard = 3 feet

13 yards x 3 = 39 feet

Now, she already has  15 feet of fabric.

Finding out the difference : 39 - 15= 24 feet

Therefore, she needs 24 feet more of fabric

Answer:

She needs an additional 24 feet of fabric.

Step-by-step explanation:

In order to solve this problem we first need to calculate how many yards of fabric Patricia needs. This will be given by the sum of the fabric needed for the curtains and the fabric required to cover the storage bench. As seen bellow:

required fabric = 10 + 3 = 13 yards

We need to convert this value to feets, so the units are the same. To do that we multiply by 3.

required fabric = 13*3 = 39 feet

To know how many more fabric she needs we have to subtract the required fabric for the task by the total she already has. This is shown bellow:

needed fabric = 39 - 15 = 24 feet

She needs an additional 24 feet of fabric.

A bakery sold 101 cupcakes in one day. The head baker predicted he would sell 81 cupcakes that day. What was the percent error of the baker's prediction? *

Answers

Answer:

19.8% is the percent error of the baker's prediction.

Step-by-step explanation:

We are given the following in the question:

Total number of cupcakes sold in 1 day = 101

Predicted number of cupcakes sold = 81

We have to find the percent error of the baker's prediction.

Percentage error =

[tex]=\dfrac{\text{Actual value - Predicted value}}{\text{Actual values}}\times 100\%[/tex]

Putting values, we get

[tex]=\dfrac{101-81}{101}\times 100\%\\\\=19.8\%[/tex]

Thus, 19.8% is the percent error of the baker's prediction.

George and Maria decided to create a garden in their backyard. George works on the garden every third day and Maria works on the garden every fourth day.
If they worked on the garden today, the number of days until they work on the same day again would be
.

Answers

Answer:

After 12 days

Step-by-step explanation:

4×3

The radius of the base of a cone is decreasing at a rate of 2 22 centimeters per minute. The height of the cone is fixed at 9 99 centimeters. At a certain instant, the radius is 13 1313 centimeters. What is the rate of change of the volume of the cone at that instant (in cubic centimeters per minute)?

Answers

Answer:

The Volume is decreasing at a rate of [tex]156\pi[/tex] [tex]cm^3[/tex] per minute.

Step-by-step explanation:

Given a cone of radius r and perpendicular height h

Volume of the cone, [tex]V=\frac{1}{3}\pi r^2 h[/tex]

Since the height of the cone is fixed, the rate of change of the volume of the Cone, [tex]\frac{dV}{dt}[/tex] is given as:

[tex]V=\frac{1}{3}\pi r^2 h \\\frac{dV}{dt}=\frac{h\pi}{3} \frac{d}{dt} r^2\\\frac{dV}{dt}=\frac{2rh\pi}{3} \frac{dr}{dt}[/tex]

We are to determine the rate of change of the Volume, V when:

The radius is decreasing at a rate of 2 cm per minute,  [tex]\frac{dr}{dt} = -2 cm/min[/tex]

Height, h=9 cm

Radius = 13cm

[tex]\frac{dV}{dt}=\frac{2rh\pi}{3} \frac{dr}{dt}\\=\frac{2*13*9\pi}{3}* ( -2)\\\frac{dV}{dt}=-156\pi \:cm^3/min[/tex]

The Volume is decreasing at a rate of [tex]156\pi[/tex] [tex]cm^3[/tex]  per minute.

O José lançou uma bola de cima de um muro. A distância da bola ao chão, em metros, quando percorre horizontal, é dada por d (x) = -0,4x/2 + 1,6x + 2

Answers

Answer:

[tex]1,43 m[/tex]

Step-by-step explanation:

1) Vamos reescrevê-la já que há dois termos do 1º grau e portanto, admite simplificação:

[tex]d(x)=\frac{-0,4x}{2}+1,6x+2\\d(x)=\left ( \frac{-0,4+3,2}{2} \right )x+2\\d(x)=\frac{2,8}{2}x+2\\d(x)=1,4x+2[/tex]

2) Agora, vamos fazer uma leitura mais atenta da função na qual d, indica "distância" e x

Considerando que José está em cima do muro, e jogou a boa a distância é calculada

[tex]0=1,4x+2\\x=\frac{-2}{1,4}\\x\approx -1.43\\[/tex]

Como distância é um valor absoluto, isto é não existem distâncias "negativas" então |-1,43|=1,43

3)

Consider the circle above. What is the approximate area of the circle?

Answers

Answer:

The area of a circle is : π (Pi) times the Radius squared : A = π r 2 or, when you know the Diameter: A = (π /4) × D 2 or, when you know the Circumference: A = C 2 / 4 π

What is the greatest common factor of the terms in the expression 21 x minus 18 x + 28 x y?
3
3x
x
xy

Answers

Answer:

I believe it’s x but i’m not 100% sure. hope this helps :)

Step-by-step explanation:

Answer:

it’s x  hope this helps :)

Step-by-step explanation:

Ginger likes to ride her bicycle and she wants to ride 30 miles the first day, 55 miles the second day and 100 miles the third day. How many miles will she ride during the three days?

Answers

Answer:

30+55+100=185

Step-by-step explanation:

The soot produced by a garbage incinerator spreads out in a circular pattern. The depth, H(r), in millimeters, of the soot deposited each month at a distance r kilometers from the incinerator is given by H(r)=0.116eâ2.3r.Write a definite integral (with independent variable r) giving the total volume of soot deposited within 5 kilometers of the incinerator each month.

Answers

Answer:

V = integral of [ 0.116e^(-2.3r) * 2πr (10^3) ] dr with upper limit of 5 and lower limit of 0. Unit in m^3.

Step-by-step explanation:

H(r) = 0.116e^(-2.3r)

H(r) = millimeters

r = kilometers

We'll use Riemann's sum to approximate the total area underneath the region of the integral.

Using Riemann's sum, we break the region into rings of radius r and width ∆r.

Area of rings = πr^2

Area of the rings with radius r and width ∆r, then becomes=

π(r+ ∆r)^2 - πr^2

On expanding:

Area = π[ r^2 + 2r∆r + (∆r)^2] - πr^2

= πr^2 + 2πr∆r + π(∆r)^2 - πr^2

= 2πr∆r + π(∆r)^2

Area = ∆r(2πr + π∆r)

Area/∆r = 2πr + π∆r

At lim ∆r tends to zero

Area/∆r = 2πr + 0 = 2πr

Area = 2πr∆r

Volume = Area * depth

= Area * H(r)

∆V approximately equal to:

2πr∆r * H(r)

Sum of the contribution for all the rings for the volume (total volume):

V approximately sum of [H(r) *2πr∆r]

V ≈ ∑H(r)· 2πr∆r.

Taking the limit as ∆r tends to zero,

V = integral of [ 0.116e^(-2.3r) * 2πr ] dr with upper limit of 5 and lower limit of 0.

The term H(r) and Area are not in the same unit. We would convert both to meters.

H(r) = mm = 10^(-3)m

Area = km^2 = km*km

= (10^3)m * (10^3)m = (10^6)m^2

V = integral of [(10^-3m) *  0.116e^(-2.3r) *2πr (10^6m^2) dr] with upper limit of 5 and lower limit of 0.

V = integral of [ 0.116e^(-2.3r) * 2πr (10^3) dr ] with upper limit of 5 and lower limit of 0. Unit in m^3.

Find the circumference of a circle whose radius is 7 in.

Answers

Answer:

43.96

Step-by-step explanation:

you get pi which is 3.14 times 7 and then times 2

Answer:

43.98 inches

Step-by-step explanation:

The circumference of a circle can be found using:

[tex]c=2r\pi[/tex]

We know r, or the radius is 7, so we can substitute that in

[tex]c=2*7(\pi )[/tex]

[tex]c=14\pi[/tex]

c=43.9822972

or, about

43.98 inches

The base of a polyhedron is a square and the lateral faces are triangles. What polyhedron is being described??

Answers

9514 1404 393

Answer:

  square pyramid

Step-by-step explanation:

The description fits that of a square pyramid.

Solve the equation. 8 – 2x = –8x + 14 x = –1 x = x equals negative StartFraction 3 Over 5 EndFraction x = x equals StartFraction 3 Over 5 EndFraction x = 1

Answers

Answer:

x =1

Step-by-step explanation:

Solve the equation:

8 - 2x = -8x + 14

Collect like terms

8 - 14 = -8x + 2x

-6 = -6x

x = -6/-6

x = 1

Answer:

x=1

Step-by-step explanation:

i did the quiz

Four hundred fifty-six minus two hundred and seventy-eight​

Answers

Answer:

whoa this hard its almost liek you can use a calculator smh

Step-by-step explanation:

Answer:

178

Step-by-step explanation:

456 - 278 = 178

What is the value of x in the problem attached?

Answers

Answer:

20

Step-by-step explanation:

subtract 5 from 85 then divide by 4

85-5=80

80/4=20

X=20. hope it helps!

3 Ms. O'Conner took a poll of 80 students to find out
how they get to school. How many more students get
to school on a bus than in a car?
How We Get to School
12%
walk
40%
bus
18%
bicycle
30%
car

Answers

Answer:

8!

Step-by-step explanation:

find numbers for school bus and car by multiplying percentages in decimal form 40% turns into .40 and 30 into .30

0.4x80 and 0.3x80 = 32 and 24. 32-24=8

Answer: 8!

Step-by-step explanation:

Find the value of x (no labels)

Answers

Answer:

x = 100

Step-by-step explanation:

The sum of the angles of a triangle are 180 degrees

x+ 42+ 38 = 180

Combine like terms

x + 80 = 180

Subtract 80 from each side

x+80-80 = 180-80

x = 100

Answer:

Easy!

Step-by-step explanation:

First, we have to know that:

The Sum of All Angles in a Triangle is 180 Degrees

(Self-explanatory, really)

This means that 42, 38, and x added together will equal 180 degrees, thus me set up our equation:

[tex]42+38+x=180\\x=100[/tex]

See? Simple.

Hope this helps!

FYI Remember that x= 100 Degrees

Find the sum of 13/20 and 0.72
Give your answer as a decimal.

Answers

The sum of 13/20 and 0.72 when expressed in decimal form gives us the answer as; 1.37.

How to convert fraction to decimal?

We want to find the sum of ¹³/₂₀ and 0.72

This is expressed as;

¹³/₂₀ + 0.72

Now, we want to express the fraction as a decimal. Thus, let us convert to decimal as; ¹³/₂₀ = 0.65

Thus, we now have the decimal expression;

0.65 + 0.72 = 1.37

Thus, we can conclude that the sum of 13/20 and 0.72 when expressed in decimal form gives us 1.37.

Read more about Fraction to decimal at; https://brainly.com/question/1284106

The sum of 13 / 20 and 0.72 when expressed in decimal form gives us the answer as; 1.37.

To find the sum of 13 / 20 and 0.72, we can first convert 13/20 to a decimal by dividing 13 by 20.

This is expressed as;

13 / 20 + 0.72

Now, we want to express the fraction as a decimal. Thus, let us convert to decimal as; 13 / 20 = 0.65

Thus, we now have the decimal expression;

0.65 + 0.72 = 1.37

Thus, we can conclude that the sum of 13 / 20 and 0.72 when expressed in decimal form gives us 1.37.

Learn more about Fraction to decimal here

brainly.com/question/1284106

#SPJ3

Twice a number plus twice a second number is 310. The difference between the numbers is 55. Find the numbers by writing and solving a system of equations. Explain how you solved the system.

Answers

Answer:

2x+2y=310

x-y=55

multiply seond equation by 2 and adding to first equation

2x-2y=110

add

2x-2y=110

2x+2y=310 +

4x+0y=420

4x=420

divide 4

x=105

sub

x-y=55

105-y=55

minuse 105

-y=-50

mult -1

y=50

the numbers are 105 and 50

Find the value of 5w-1 given that 3w-4=8
Simplify your answer as much as possible

Answers

Answer:

19

Step-by-step explanation:

Solve for the value of w.

3w - 4 = 8

Isolate the variable, w. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

First, add 4 to both sides:

3w - 4 (+4) = 8 (+4)

3w = 8 + 4

3w = 12

Divide 3 from both sides to fully isolate the variable, w:

(3w)/3 = (12)/3

w = 12/3

w = 4

Plug in 4 for w in the first expression & solve:

5w - 1

5(4) - 1

20 - 1

19

19 is your value.

~

Answer:

19

Step-by-step explanation:

First, we need to solve for w by isolating it

3w-4=8

Add 4 to both sides

3w=12

Divide both sides by 3

w=4

Now we know w and can plug 4 in for w and solve

5w-1

5(4)-1

20-1

19

smoothie contains 1 banana (B), 4 strawberries (St), 1 container of yogurt (Y), and 3 ice cubes (Ic). Write a balanced equation to describe the relationship. Write a conversion factor to show the relationship between the number of ice cubes and the number of smoothies produced. How many strawberries would you need to make 12 smoothies

Answers

Answer:

Step-by-step explanation:

Step 1: List the known quantities and plan the problem.

Known

have 1 Banana (B)

4 Strawberries (St)

1 Yoghurt (Y)

3 Ice cubes (Ic)

Therefore, the equation for our smoothie is shown below:

B+4St+Y+3Ic→BSt4YIc3

Step 2: Conversion factor to show relationship between ice cubes and smoothie

3Ic = BSt4YIc3 (conversion factor)

Step 3: Number of strawberries required to make 12 smoothies

4St = BSt4YIc3 (conversion factor)

12BSt4YIc3 * (4St/BSt4YIc3) = 48St

Answer:

A ;w ;

Step-by-step explanation:

Did the assignment

2
3
x − 9 − 2x + 2 = 1

Answers

Answer: x = 8

Step-by-step explanation: Solve for the equation x - 9 - 2x + 2 = 1.

Step 1: x - 9 - 2x + 2 = 1

Step 2: x + (-2x) - 9 + 2

Step 3: x - 7 = 1

Step 4: x - 7 + 7 = 1 +7

Step 5: x = 8

i will give u a crisp high five if u answer his for me playboi

Answers

Answer:

The answer is around 190°

Step-by-step explanation:

You use A= (central angle/ 360) x πr²

Substitute the values you have and solve:

59.66 yd² = [tex]\frac{x}{360}[/tex] x π x (6)²

59.66 yd² = [tex]\frac{x}{360}[/tex] x π x 36

Solve for x and you get 189.9036781 ≈ 190°

Answer:

around 190°

Step-by-step explanation:

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