Mathematics College

it took jake 28 minutes to run 5km last months. this month he ran 5km in 21 minutes. by what percentage had jake improve his running time?

Answers

Answer 1

Answer:

25%

Step-by-step explanation:

28-21=7

7/28=×/100

7×100=700

700÷28=25

Answer 2

Answer:

Step-by-step explanation:

Okay so, 28-21 =07 right

7 as a percent is 700% and the limit is 100%

so 700%/100%= 7

Related Questions

what is 10:40 plus 7:15 in time?

Answers

Answer:

5:55

Step-by-step explanation:

just add it up and you'll get the answer which is 5:55

Answer:5:55

Step-by-step explanation: lol

Need help :) plss will mark brainliest

Answers

Answer:

Step-by-step explanation:

MR Collins made a scatter plot to show the relationship between the number of absences a student in her class has the student final exam score

Answers

what’s the question ?

help as fast as you can!!!!!! Any living thing is called an organism,no matter if it is one-celled or many-celled. True or False?.

Answers

Answer:

true

Step-by-step explanation:

Answer:

TRUE.

Step-by-step explanation:

1. What is the place value of the 5 in the number 1,589,302? *
hundreds
O hundred thousands
millions

Answers

Answer:

Hundred thousand

Step-by-step explanation:

500,000

write the fraction of 7/14in it's simple form

Answers

Answer:

1/2

Step-by-step explanation:

Divide both parts by 7

1/2

Hope this helps :)

What is the value of the value below.
4/5+3/5+3.5*5

Answers

Answer:

18.9

Step-by-step explanation:

The graph below shows where the two functions y = f(x) and y = g(x) intersect. Solve the equation f(x) = g(x).

Answers

Answer: (-2, 2) and (4, 8)

There are two solutions because the two functions cross each other twice.

The solutions of the equation f(x) = g(x) are (4, 8) and (-2, 2).

We have a graphical representation of two functions f(x) and g(x) and where they intersect.

We have to solve the equation f(x) = g(x)

Two functions A(x) and B(x) are plotted on the graph such that these these two functions intersect each other at three different coordinates. The total number of solutions possible for - A(x) = B(x) is ?

The total number of solutions can be calculated by counting the points at which these curves intersect each other. Hence, the total number of possible solutions are 3.

In the question given - We have a straight line and a parabola -

Now, we just have to look at the points at which these two graphs intersect each other. It can be seen that - both the graphs cut each other at coordinates - (4, 8) and (-2, 2).

Hence, the solutions of the equation f(x) = g(x) are (4, 8) and (-2, 2).

Alternative Method -

The general equation of straight line is : y = mx + c and that of parabola is : y = [tex]\sqrt{4ax}[/tex]

The solution can be calculated by equating both of the above expressions and solving them.

mx + c = [tex]\sqrt{4ax}[/tex]

To solve more questions on solving the equations, visit the link below -

https://brainly.com/question/1386163

#SPJ5

A test of a new car results in 300 miles on 10 gallons of gas. How far could you drive on 45 gallons of gas?

Question 5 options:

1350 miles

67 miles

670 miles

135,000 miles

Answers

Answer:

1350

Step-by-step explanation:

300x4=1200

300×.5=150

1200+150=1350

40 POINTS Geometry homework

Answers

[tex]\angle{DBC }[/tex]=(5x+4)°

[tex]\angle{ A }[/tex]=(2x-2)°

[tex]\angle{C }[/tex]=(4x-6)°

we know that,

[tex]\angle{DBC}[/tex]=[tex]\angle{A}[/tex]+[tex]\angle{C}[/tex]

According to the question,

[tex]\tt{ 5x+4=2x-2+4x-6 }[/tex]

[tex]\tt{ 5x+4=6x-8 }[/tex]

[tex]\tt{ 6x-5x=4+8 }[/tex]

[tex]\blue{x=12 }[/tex]

so,

[tex]\angle{C }[/tex]=(4x-6)°=(4×12-6)°=(48-6)°=42°

plssss it’s due in 5 min answer plsss

Answers

y=11x+2 should be you answer for the slope

24/30 in the simplest form

Answers

Answer:

The answer to this question is 4/5.

Answer:

4/5 or 0.8

Step-by-step explanation:

we divide tap and bottom by 6.

could you please help with this equation:
Simplify the algebraic expression: 4(3x + y) – 2(x – 5y)

Answers

Answer: 10x + 14y

Step-by-step explanation: just simplify it

Answer:

10x+14y

Step-by-step explanation:

for algebra 2 please help <3

Answers

Answer:

A. 1

Step-by-step explanation:

✔️To find f(g(1)), first find g(1).

From the mapping given for g(x), the corresponding value of x = 1, is 0.

That is,

g(1) = 0

✔️Next is to find f(g(1)) by replacing x with 0 in f(x) = 3√x + 1

Thus:

f(g(1)) = 3√0 + 1

f(g(1)) = 0 + 1

f(g(1)) = 1

solve for x.

x/6 =2

A.x=3
B.x=-12
C.x=12

Answers

Answer:

C. x=12

Step-by-step explanation:

C. x = 12 okiiiiiiiiiiii

3. Solve the following application of a system of linear equations.
Two students in the same Spanish class, Cindy and Ruben, plan to get together after school to make
vocabulary flashcards. Cindy started on the project yesterday and has already made 14 flashcards.
Ruben hasn't started yet so he has none. Since Cindy makes 9 flashcards per minute and Ruben makes
10 flashcards, Ruben will soon have the same number of flashcards.
Which variables will you use and what do they represent?
Write your system of linear equations below.
Solve the system.
How much time will it take for Cindy and Ruben to have the same number of flashcards?
How many flashcards will each student have at that time?

Answers

Answer:

Equations:

[tex]y = 14 + 9 x[/tex] --- Cindy

[tex]y = 10 x[/tex] --- Ruben

Solution to equation:

Time they have the same amount: 14 minutes

Number of cards they have at that time: 140 flashcards

Step-by-step explanation:

Solving (a): Variables and what they represent

The variables to use are x and y

Where x represent the minutes and y represents the number of flashcards in x minutes

Solving (b): System of linear equation

Cindy:

[tex]Existing\ Flashcards = 14[/tex]

[tex]Additional = 9[/tex] per minute

Total number of flashcards (y) in x minutes is:

[tex]y = Existing\ Flashcards + Additional * x[/tex]

[tex]y = 14 + 9 * x[/tex]

[tex]y = 14 + 9 x[/tex]

Ruben:

[tex]Rate = 10[/tex] per minute

Total number of flashcards (y) in x minutes is:

[tex]y = Rate * x[/tex]

[tex]y = 10 * x[/tex]

[tex]y = 10 x[/tex]

Solution to Equations:

Time they have the same amount.

To do this, we [tex]equate[/tex] [tex]both[/tex] expressions

i.e.

[tex]10x = 14 + 9x[/tex]

Collect Like Terms

[tex]10x - 9x = 14[/tex]

[tex]x = 14[/tex]

Number of cards they have at that time.

Here, we simply substitute 14 for x in any of the equations.

[tex]y = 10 x[/tex]

[tex]y = 10 * 14[/tex]

[tex]y = 140[/tex]

[tex]y = 14 + 9 x[/tex]

[tex]y = 14 + 9 * 14[/tex]

[tex]y = 14 + 126[/tex]

[tex]y = 140[/tex]

A middle school took all of its 6th grade students on a field trip to see a ballet. The students filled 4753 seats, which was 97% of the total number of seats in the theater. How many total seats were in the theater?

Answer:

they first answer or a

Step-by-step explanation:

because if you look at stage direction he is just facing the crowd

Answer:

The stage direction shows how King Frederick looks when he speaks.

Step-by-step explanation:

Tamara has $42.00 to buy party decorations. She wants to buy 3 packs of party hats, 2 bags of balloons, and a banner

Answers

Answer:

Answer is
The fourth option
4/10

Answer:

4/10

Step-by-step explanation:

4/10 simplifies to 2/5

4/2 = 2

10/2 = 5

Joe has read 20% of a book. He has 16 more pages to finish. How many pages are there in the book?
There are pages in the book.
(Type a whole number.)
Plz answer ASAP

Answers

Answer:

Step-by-step explanation:

16 is 80% of 20

y-2=1/4(x-3)

how can i graph this?

Answers

Answer:

your anwer is x=4y-5

Step-by-step explanation:

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