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jenyasd209 [6]
3 years ago
10

Peter records the time it takes him to finish an exercise routine. His two times are 58.39 min and 49.18 min. Johnny records his

exercise times as well. His two times are 35.71 min and 41.09 min. How many minutes more is Peter's total time than Johnny's total time? Enter the answer as a decimal in the box.
Mathematics
1 answer:
evablogger [386]3 years ago
3 0
All you do is add up Johnny and Peters time and then subtract those two answers to find the difference between the two runners. The answer is 30.77.
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alex spent 3/7 of his money he gave 1 /4 of the remainder to his sistet he haf $120 left how much money did he in the beginning
Sonbull [250]
Let his total money be x.
He spent (3/7)*x of his money.
He gave 1/4(x-3/7x) to his sister. 
which is : (1/4)*(4/7)*x = (1/7)*x 
Now,
How much money he have in the beginning = 
(3/7)*x+(1/7)*x+120=x
(4/7)*x+120=x
120=x-(4/7)*x
120=(3/7)*x
x=120*7/3 [cross multiplication]
x=280.

So, Alex had $280 in the beginning.

6 0
3 years ago
Find the equation of a straight line passing throught the point listed and having the given gradient. Express your answer in the
Igoryamba
First let's try to find the equation in this form : <span>y = mx + c 

The gradient is given 3 . In a line's equation, x's coefficient represents the line's gradient.

So equation of a line with the gradient of 3, would look like this ;

</span>y= 3x + c
<span>
Now a point that the line passes through is given, (1, 2) 

This point's x-coordinate is 1 and y-coordinate is 2.

So we'll plug its x-coordinate value in the equation and also y-coordinate value. So we can solve it.

As you know, </span>x=1 and y=2

y = 3x + c

2\quad =\quad 3\cdot 1+c\\ \\ 2\quad =\quad 3+c\\ \\ 2-3\quad =\quad c\\ \\ -1\quad =\quad c

We found c = -1 

Also in a line's equation, c is constant and it represents the line's y-intercept

So let's build the line's equation.

m=3 and c=-1

y= mx + c

y= 3x -1

We found the line's equation in this form, y= mx + c

Now let's turn it into this form, ax + by + c = 0

y\quad =\quad 3x-1\\ \\ y-3x\quad =\quad -1\\ \\ y-3x+1\quad =\quad 0\\ \\ -3x+y+1\quad =\quad 0

Final answers,

\boxed { y\quad =\quad 3x-1 }

and 

\boxed { -3x+y+1\quad =\quad 0 }

I hope this was clear enough :)




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5 0
3 years ago
Read 2 more answers
Question 65 pts Which statement about signal phrases is true? (5 points) Group of answer choices Signal phrases should be worded
damaskus [11]

Answer:

The answer is A.

Step-by-step explanation:

I took the test!

6 0
3 years ago
Will mark brainliest for correct answer, due soon!
Rus_ich [418]

circumference = pi*d

70cm*pi = 219.8cm

219.8cm × 240 rev = 52752 cm

52752cm/100 = 528m

4 0
3 years ago
Use the original price and the markup to find the retail price.
Natasha_Volkova [10]

41 dollarsStep-by-step explanation:

4 0
3 years ago
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