1. I can wash a car in 20 minutes. How long will it take me to wash 20 cars?

2. I can type 4 words per minute. How long will it take me to write a 500 word essay?

Answers

Answer 1
1. 400 minutes because if it takes 20 minutes to do 1 car you multiply: 20 cars x 20 minutes to get 400 minutes

2. 125 minutes because if it takes 1 minute to write 4 words you divide: 500 words/ 4 words = 125 minutes
Answer 2
1. It will take you 400 minutes to wash the car

Related Questions

How do you simplify 5 to the 3 power times 25

Answers

Answer:

5^5

Step-by-step explanation:

5^3 * 25

Note that 25 = 5^2 (which is 5 * 5)

so we can rewrite the first expression as

5^3 * 5^2

We can add the exponents because we are multiplying and there is the same base (5):

5^(3+2) = 5^5

Pliz help solve this what's 3+4×2.00×29
Here the other question 5n+1 find the sequence

Answers

3+4x2.00x29 is 235.

Answer:

Step-by-step explanation:

1) 3 + 4*2*29 = 3 + 232  = 235  

First we have to do multiplication and then we have to add

2) 5n + 1

Term 1 ; n = 1  ;  5n + 1 = 5*1 + 1 = 5 + 1 = 6

Term 2 ; n = 2 ; 5n + 1 = 5*2 + 1 = 10 + 1 = 11

Term 3 ; n = 3 ; 5n+ 1 = 5*3 + 1 = 15 + 1 = 16

Term 4; n = 4  ; 5n + 1 = 5*4 + 1 = 20 + 1 = 21

The sequence : 6 , 11, 16 , 21 ..........

the capacity of cylinder tank is 539 litres . if its height is 1.4m then find the area of base

Answers

Step-by-step explanation:

Solution:

Here,

Volume of the tank=539 litres

=539×1000cm^3=539000cm^3

Height=1.4×100cm=140cm

Let the radius of the base be r cm

Then,

22/7×r^2×140=539000

or,r^2=539000×7/22×140

or,r^2=1225

or,r=35 cm

So,

Area of base=pie r^2

=22/7×35^2

=3850 cm^2

Keep smiling and hope u r satisfied with my answer.Have a good day :)

Given Data:

Capacity of the Cylinder tank, V = 539 litres =

Height, h = 1.4 m

Area of the Cylinder, A = ?

Convert litres to m³: I litre = 0.001 m3

: . Capacity of the Cylinder tank = 539 litres = 0.539 m³

Let the radius of the base be r cm.

Find the radius of Cylinder:

Volume = πr²h

0.539 = πr²(1.4)

0.539 ÷ 1.4π = r²

r² = 0.12255

r = √0.12255

r = 0.35m

Find Area of Base:

Area, A = πr²

Area = π(0.35)² = 0.385 m²

Answer: The Area of base is 0.385 m²

8x-5y-2x-3y simplify the expression by combining like terms

Answers

you’d simplify it to 6x-8y.
8x and -2x go together which give you 6x
-5y and -3y go together which give you -8y

(a) Find the value of xif 10, x and 30 are in A.P.
(b) If 6,x,y, and 18 are in A.P., find the value of x and y.

it's a optional mathematics Questions please solve him​

Answers

Part A

Answer:  x = 20

--------------------------------

Explanation:

AP = arithmetic progression, which is another way of saying arithmetic sequence.

Let d = common difference

first term = 10second term = first+d = 10+d = xthird term = second+d = x+d = 30

Apply substitution like so

x+d = 30

10+d+d = 30 ... replaced x with 10+d

10+2d = 30

2d = 30-10

2d = 20

d = 20/2

d = 10 is the common difference

Therefore,

x = 10+d = 10+10 = 20

The AP {10,x,30} updates to {10,20,30}. We see the gap between terms is 10 units. All AP's have the same gap width between adjacent terms.

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

Part B

Answers:  x = 10 and y = 14

--------------------------------

Explanation:

We use the same ideas mentioned back in part A.

d = common difference = unknown for now

first term = 6second term = first+d = 6+d = xthird term = second+d = x+d = (6+d)+d = 6+2d = yfourth term = third+d = y+d = (6+2d)+d = 6+3d = 18

Hopefully you can see how each term builds up to form the next one. We'll solve that last equation like so

6+3d = 18

3d = 18-6

3d = 12

d = 12/3

d = 4

So we then can say:

x = 6+d = 6+4 = 10y = 6+2d = 6+2(4) = 6+8 = 14

The arithmetic sequence {6,x,y,18} updates to {6,10,14,18}. There's a gap of 4 between each adjacent term.

What division problem iS
being
modeled?

Answers

Answer: I THINK fraction

Step-by-step explanation:

1/4 = fraction

1.

Find the first, fourth, and eighth terms of the sequence. A(n) = –2 • 2^n–1


A. –4; –32; –512

B. 1; –64; –16,384

C. –8; –64; –1,024

D. –2; –16; –256

Answers

Answer:

D

Step-by-step explanation:

given that

A(n)=-2•2^(n-1)

n->represent the terms

A(1)=-2•2^(1-1)=>-2•2^0

A(1)=-2•1=-2

For the fourth term

A(4)=-2•2^(4-1)

A(4)=-2•2^(3)

A(4)=-16

for the 8th term

A(8)=-2•2^(8-1)

A(8)=-2•2^(7)

A(8)=-256

Therefore first, fourth and eight => -2;-16;-256

Write in exponential form
ахахахахаха

Answers

Answer:

the exponential form of this is a to the power 6

I.e a⁶

mark me as brainliest


Identify the terms, coefficients, constant terms, and like terms of the
expression.
1.-3x - 5- 7x - 9
2.-10c - 6 + c

Answers

Answer:

1) terms: -3x, -5, -7x, 9

Coefficients: 3 and 7

Constant: -5, -9

Like terms: -3x and -7x (-3x + -7x = -10x)

-5 and -9 = -14

2) terms: -10c, -6, c

Coefficients: -10 and 1

Constant: -6

Like terms: -10c and c (-10c + c = -9c)

Step-by-step explanation:

What load can be lifted by an effort of 800N if the effort arm is 80cm and the load arm is 20cm?​

Answers

Step-by-step explanation:

Solution,

Effort=800N

Effort arm=80 cm

Load arm=20 cm

Load=?

Now,

by the principle of lever, we have

Load×Load arm=Effot×Effort armLoad×20=800×80Load=800×80/20Load=3200 N

So, the load of 3200N can be lifted .

Answer:

load (l) =?

LOAD ARM = 20 CM

EFFORT ( E)= 800N

EFFORT ARM = 80cm

load *load arm = effort *effort arm

l*20 cm = 800 *80

L = 64000/20

answer = 3200

Find the least common multiple of 3 and 8

Answers

I believe the answer is 24

Answer:

the right answer is 24

hope it help

I need to describe and fix this error
9+(-6)=-3

Answers

It should be positive

Answer: 9 - 6 = 3

Step-by-step explanation:

To graph an exponential, you need to plot a few points, and then connect the dots and draw the graph. Where do you
come up with values to use in the graph?
T-chart using positive real numbers C. T-chart using all real numbers
b. T-chart using negative real numbers d. T-chart using random values for x and y
a.
Please select the best answer from the choices provided
OA
ОВ
D
and Guit
Submit

Answers

Es la b o Edu plis no pos

To graph an exponential,

d. T-chart using random values for x and y.

What is mean by graph?

The set of ordered pairings (x, y) where f(x) = y makes up the graph of a function.

These pairs are Cartesian coordinates of points in two-dimensional space and so constitute a subset of this plane in the general case when f(x) are real values.

Now,

We know an exponential function is a function in which the independent variable is the exponent.

One such function is y = eˣ

Now, To graph an exponential function you come up with values to use in the graph should be a T-chart using random values for x and y.

As it would result in graphing the complete nature of the function.

Learn more about graphs here :

brainly.com/question/2288321

#SPJ7

Find the y-intercept of the line: 6x – 3y +6=0

Answers

Answer:

Step-by-step explanation:

The y-intercept exists where the x coordinate is 0. Therefore, we can find it by plugging in a 0 for x and solving for y:

6(0) - 3y + 6 = 0 and

-3y + 6 = 0 and

-3y = -6 so

y = 2

7. Is 5.787787778... a rational or irrational number?
Explain.

Answers

Answer:

Irrational

Step-by-step explanation:

Its irrational as it has no pattern of numbers after decimal point and the number are infinite

Answer:

irrational because it has a coma after one number

HELP RN PLS
simplify (4^3)^5

Answers

Answer:

(4^3)5 = 4^15

hope this helps

Step-by-step explanation:

Which rule describes the pattern shown? 41, 54, 67, 80, 93, 106

Answers

Answer:

adding by 13

Step-by-step explanation:

subtract 54-41

Cady found that she uses 1/6 of a roll of paper towels each week. How many rolls of paper towels will she use in 8 weeks?

Answers

Answer:

[tex]1 \frac{2}{6} [/tex]

Step-by-step explanation:

[tex]8 \times \frac{1}{6 } = \frac{8}{6} = 1 \frac{2}{6} [/tex]

Find the cube root of 1.331

Answers

Answer:

answer is 1.1

Step-by-step explanation:

11(1331)

11(121)

11(11)

(1)

10(1000)

10(100)

10(10)

(1)

(11/10*11/10*11/10)^(1/3)

=11/10

=1.1.

Answer:

1.1

Step-by-step explanation:

Suppose Clare labels the books at a constant speed of s books per minute. Write an equation that represents the relatinoship between her labeling speed and the number of minutes it would take her to finish labeling. ​

Answers

it will take her 34 mins coz I said so innit

………………………………….. x z z z

Answers

Answer:

a: 7:3

b:by reading 10 hours

Answer:

a: 4 : 1

b: 12 (water) : 3 (sugar)

Step-by-step explanation:

ratio is similar to a fraction

water to sugar

the "to" is for what of every what it needs

to = can be used as ":"

For example:

For every 1 cup of sugar you need 4 cups of water to make the humming bird nectar. (it needs to be IN ORDER which is why for letter 'a' I did it water to sugar)

Solve the problem by writing a inequality

Answers

Answer:

first option

Step-by-step explanation:

number of shirts = x

price of shirts made = 9x+20

amount u earn by selling the shirts = 15x

profit = 15x - (9x+20)

profit of at least 150,  

15x - (9x+20) ≥ 150

Which one describes the algebraic expression for the phrase, "twice a number decreased by 5 is greater than 12"? 2n - 5 = 12
2n - 5 < 12
12 + 5n > 2
2n - 5 > 12

Answers

Answer:

2n - 5 > 12

[tex]\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}[/tex]

Money is

divisible, and each unit is

equivalent. In other words,

money is a blank

Answers

Answer:

is this a question or something else ?

(HELP ASAP!!)

If you deposit $5000 into an account paying a rate 15% simple interest annually, how much interest will you make in 24 months

Answers

Answer:

1500

Step-by-step explanation:

24 month means 2 years ( N )

rate 15 pcpa ( R )

amount is 5000 ( P )

so by formula

interest = P×N×R/100

so ( I ) = 5000×2×15/100

so( I ) = 50×2×15 ....... ( here 100 ( 2 zero ) and 5000.( 2 zero ) got canceled

so ( I ) = 50×2×15

so ( I ) = 100×15

so ( I ) = 1500

MARK AS BRAINLIST IF IT IS USEFUL

Select all ratios equivalent to 7:5.

Answers

Answer:

77 : 55

Step-by-step explanation:

77 : 55

divide the ratio by 11.

7 : 5

Help me pleaseee!!
Would appreciate ^^
**BRAINLIST, thanks and points***

Answers

Answer:

1) 4900 is square

2) The greatest common factor 30 and 126 is 6.     The GCF of 126 and 39204 is 18

3) i) 44100 ii) 48024900

round off 7284 to 1sf​

Answers

Answer:

7000

Step-by-step explanation:

This is because when you round to the significant figure, you basically look at any digits at the start of the number, which isn't zero. In this case, it would be in the thousands place 7284. So you round 7284 to the nearest thousands, which, would be 7000

Round off 7284 to the 2sf and see what u get

Show that 6 – 4x - x^2 can never be greater than 10.
( This is an Additional Math Question )

Answers

Answer:

see explanation

Step-by-step explanation:

Given

6 - 4x - x²

Since the coefficient of the x² term < 0 then parabola has a maximum vertex.

To find the x- coordinate of the vertex

[tex]x_{vertex}[/tex] = - [tex]\frac{b}{2a}[/tex]

with a = - 1 and b = - 4 , then

[tex]x_{vertex}[/tex] = - [tex]\frac{-4}{-2}[/tex] = - 2

The corresponding y- coordinate is found by substituting x = - 2 , that is

6 - 4(- 2) - (- 2)² = 6 + 8 - 4 = 10

vertex = (- 2, 10 )

The maximum value of the function is the y- coordinate of the vertex

Then maximum value is 10

Thus 6 - 4x - x² is never greater than 10

This chart shows the temperature recorded at noon for some world cities . Which two cities had different of 25°c ​

Answers

Answer: London and Moscow.

Step-by-step explanation: This problem is simple. First, we use process-of-elimination. None of the positive values have a difference of 25 degrees, so one of the two values must be -12 degrees aka Moscow. From there, we add 25 to -12 to get 13. This means that the other city is London since it is 13 degrees.

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