Will give brainliest answer

Given :

Xinran walks 3 mi/h uphill, 4 mi/h on flat land and 5 mi/h downhill.

To Find :

If he walks one mile uphill, then one mile on flat land and then returns by the same route to his starting point, how many minutes does he walk.

Solution :

Time taken to walk one mile uphill is :

[tex]t_1 = \dfrac{1}{3}\ hours[/tex]

Time taken to walk two mile on flat land( one on going and one or returning ) is :

[tex]t_2 = \dfrac{2}{4}\ hours\\\\ t_2 = \dfrac{1}{2}\ hours[/tex]

Time taken to walk one mile downhill is :

[tex]t_3 = \dfrac{1}{5}\ hours[/tex]

Total time taken :

[tex]T = t_1 + t_2 + t_3 \\\\T = \dfrac{1}{3} + \dfrac{1}{2}+\dfrac{1}{5}\\\\T = \dfrac{10 + 15 + 6}{30} \\\\T = \dfrac{31}{30}\ hours = \dfrac{31}{30}\times 60 \ minutes\\\\T = 62\ minutes[/tex]

Therefore, time taken un 62 minutes.

Answer:

Neither

Step-by-step explanation:

Slope for AB is -4

Slope for CD is -3/7

in order to find the slope use this formula attached

AB -9-(-10) / 4-8 = -4         your y2 is 4 your y1 is 8 / x2 is -9 x1 is -10

CD 9-12 / 2-(-5)                 your y2 is 9 your y1 is 12 / x2 is 2  x1 is -5

Answer: The lines will be neither

Line A is Purple dot

Line B is Blue dot

Line C is Red dot

Line D is Green dot

Answer:

1/2k-3/5

Step-by-step explanation:

Answer:

Step-by-step explanation:

2/5 k - 3/5 + 1/10 k

like denominators

4/10 k + 1/10 k - 3/5

5/10k - 3/5

1/2k - 3/5

Answer:

1. Andrew grew 4 5/12 inches in 2 years

2. Abbey rode her bike for 3 3/8 hours in 2 days.

Step-by-step explanation:

When adding fractions you must have a common denominator for both of them.

First make the mixed fraction, improper fractions.

1 3/4 = 7/4

2 2/3 = 8/3

7/4 x 3/3 = 21/12

8/3 x 4/4 = 32/12

21 + 32 = 53

53/12 = 4 5/12

1 3/4 = 7/4

1 5/8 = 13/8

7/4 x 4/4 = 28/16

13/8 x 2/2 = 26/16

26 + 28 = 54

54/16 = 3 3/8

I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!

Answeri dont now

Step-by-step explanation:

Answer:

The constant of proportionality is 5. It represents the cups of yellow paint needed for 1 cup of blue paint.

Answer:

Step-by-step explanation:

Coordinates of the given rectangle are,

A → (3, 3)

B → (6, 3)

C → (6, 1)

D → (3, 1)

Translation of the given rectangle by the vector [tex]\binom{-1}{5}[/tex] means, shifting of rectangle by 1 unit to the left and 5 units up.

So the rule which defines the translation of the vertices by the given vector is,

(x, y) → (x - 1, y + 5)

By this rule, after translation vertices of image rectangle will be,

A(3, 3) → A'(2, 8)

B(6, 3) → B'(5, 8)

C(6, 1) → C'(5, 6)

D(3, 1) → D'(2, 6)

Answer:

Width = 54.3 inches

Step-by-step explanation:

We solve this question using the Pythagoras Theorem

Width² + Height² = Diagonal²

From the above question

Width= ??

Height = 30 inches

Diagonal = 62 inches

Width² + 30² = 62²

Width² = 62² - 30²

Width = √62² - 30²

Width =✓2944

Width = 54.258639865 inches

Approximately

Width = 54.3 inches

Hence, the new television was 54.3 inches wide.

Answer:63

Step-by-step explanation:

Answer:

x=2

Step-by-step explanation:

Answer:

X=2

Step-by-step explanation:

Answer:

What lesson in math is this?

Step-by-step explanation:

So that I can search it and then help you

Answer:

It is (B) $48

Step-by-step explanation:

I just finished the unit test and got it right :D

Answer:

825

Step-by-step explanation:

Calculation for what The frequency in this interval is equal to:

Using this formula

Frequency=Population size*Relative frequency interval

Let plug in the formula

Frequency=5,500 observations*0.15

Frequency=825

ThereforeThe frequency in this interval is equal to:825

The frequency in this interval is equal to 825.

Given

A population is of size 5,500 observations.

When the data are represented in a relative frequency distribution, the relative frequency of a given interval is 0.15.

The frequency is defined as the product of population size and relative frequency interval.

The following formula is used to calculate frequency in this interval is;

[tex]\rm Frequency= Population\ size\times Relative\ frequency \ interval\\\\[/tex]

Substitute all the values in the formula;

[tex]\rm Frequency= Population\ size\times Relative\ frequency \ interval\\\\Frequency= 5500\times 0.15\\\\Frequency= 55\times 15\\\\Frequency= 825[/tex]

Hence, the frequency in this interval is equal to 825.

To know more about relative frequency click the link given below.

https://brainly.com/question/8972639

Answer:

Divide using long division. The whole number portion will be the number of times the denominator of the original fraction divides evenly into the numerator of the original fraction, and the fraction portion of the mixed number will be the remainder of the original fraction division over the denominator of the original fraction.

1 1/2

Step-by-step explanation:

not eleven one and 1 half

Answer:

0 whole 3 upon 2

0[tex]\frac{3}{2}[/tex]

9514 1404 393

Answer:

  V = (x)(10-2x)² . . . . factored form

  V = 4x³ -40x² +100x . . . . standard form

Step-by-step explanation:

A square with corners cut out has no volume. It is a plane figure.

__

We presume you are interested in the volume of the open-top box obtained by folding up each "ear" of the cut figure. The length of each side of its square bottom is 10-2x. The depth of the box is x. So, the volume is ...

  V = LWH = (10-2x)(10-2x)(x)

  V = x(10 -2x)²

_____

The graph shows the volume is a maximum when x = 1 2/3 cm.

Step-by-step explanation:

cross multiply

2x - 4 = 4 × 5

2x - 4 =20

collect like terms (CLT)

2x = 20 + 4

2x=24

divide both sides by 2

x=12

Answer: Becky will have to spend £ 9.6 .

Step-by-step explanation:

The ratio of their ages will be:

Melissa : Becky : Daniel = 13 : 12 : 10

Total amount share = £42

Share of Becky = [tex]\dfrac{12}{12+13+10}\times42[/tex]

[tex]=\dfrac{12}{35}\times42\\\\= 14.4[/tex]

Hence, Becky's share = £14.4

Becky decided to save a third of her share.

Then, Amount she spend = [tex]14.4-\dfrac13 \times 14.4[/tex]

[tex]=14.4-4.8\\=9.6[/tex]

hence, Becky will have to spend £ 9.6 .

Answer:

10 to 12

Step-by-step explanation:

12 times 4 is 48

Answer:

c

Step-by-step explanation:

hope it helpp

Answer:

i think it is A

Step-by-step explanation:

Answer:

66

Step-by-step explanation:

88% of 75

66

Answer:

Step-by-step explanation:

Answer: 150 sandwhiches

Step-by-step explanation: 60 sandwhiches in 4 hours. 15 sandwhiches per hour so you add 30 to the doulbe of 60 which is 120 then you add 30

Answer:

Multiply them and then add them altogether

so

Step-by-step explanation:

2x3=6

4x5=20

6x7=42

8x9=72

6+20+42+72= 140

6+20=26

26+42=68

68+72= 140

Answer:

Im lost to lol mark brainlest imagine

Answer:

.

Step-by-step explanation:

Answer:

0.0025

Step-by-step explanation:

Answer:

(a)  [3        -12         15        -21]

Step-by-step explanation:

Given;

3.[ 1 -4 5 -7]

The product of the function is calculated as;

3.[ 1 -4 5 -7] = [1 x 3   -4x3     5x3     -7x3]

                   = [3        -12         15        -21]

Therefore the correct option is "a"  [3        -12         15        -21]

Answer:

x = − 4 .y = − 1

Step-by-step explanation:

Answer:

taxes

Step-by-step explanation:

Taxes, shipping (if checkout is online), and false advertisements.