Mathematics Middle School

mr. parra brought a coffee to school this morning. after first period, he only had 15% of the coffee left. if he had 210 mL of coffee remaining, how much coffee did he begin with?

Answers

Answer 1

Answer:

Step-by-step explanation:

First we have to find their hourly rate. We do this by dividing their total over 4 hours by 4 to get over just 1 hour.

60 / 4 = 15

Now we divide their total of $210 by their hourly rate of $15 to find how many hours it would take.

210 / 15 = 14

I would take 14 hours to earn $210.  

If im right brainliest plz

Hope this helps :)

Answer 2

Answer:

It will take 14 hours to get 210$

Step-by-step explanation:

Khan academy

Related Questions

Does anyone know the answer to this?

Answers

Answer:

Rectangle

Step-by-step explanation:

(hope this helps!!)

Your answer would be rectangle:)

Rewrite the expression in the form 5^n
(5^3)^2=?

Answers

This problem is all about bases and exponents.  Because we have a quotient and the bases are both 5's, that means that we can use the rule of exponents for quotients to rewrite and simplify:

That's the simplification as long as you are "allowed" to leave the exponent as a negative number.

The answer is 5^6 because if we have an exponent to the power of exponent we have to multiply the powers..

Hope it is useful :)

Without graphing the​ equations, decide whether the system has one​ solution, no​ solution, or infinitely many solutions.

4y = x - 9
6x - 8y = 18

How many solutions does the system​ have?

A. One solution
B. Infinitely many solutions
C. No solution

Answers

Answer:

No solution

Step-by-step explanation:

Look at the first problem. As you see there is a y and a x. You cannot find x and y. So there is simply no solution.

Combine the like terms to create an equivalent expression:

-5j+(-2j)+3

Answers

Answer:

-7j + 3

Step-by-step explanation:

easy

PLEASE HELP ASAp

Sophia has a shelf that is 51 over 2 inches wide. How many notebooks can Sophia arrange on the shelf if each notebook is 3 over 2 inches thick?

38, because the number of notebooks is 51 over 2 ⋅ 3 over 2
153, because the number of notebooks is 51 over 2 ÷ 3 over 2
102, because the number of notebooks is 51 over 2 ⋅ 3 over 2
17, because the number of notebooks is 51 over 2 ÷ 3 over 2

Answers

That would be 17.
Why?
The number of notebooks is 51/2 divided by 3/2.
(51/2)/ (3/2)= 51/2 * 2/3 = 102/6 =1717
The answer to this is 17

Which of the following uses the reciprocal property to rewrite {x}{5} = {72}{4}

A: x/72 = 4/5

B: 5/x = 4/72

C: x/5 = 72/4

D: x/4 = 5/72

Will mark brainliest if answer is correct.

Answers

Anw:

a

Step-by-step explanation:

72*4=5x

=288

5x=288

x=288/5

=57.6

x=57.6

57.6/72=0.8

4/5=0.8

Solve each system by elimination
8/11y+3/11=-x
-21=56y+77x

Answers

Answer:

Find the least common denominator (LCD) by factoring each denominator multiple ... -77x+11_- Tx 5.6X-5 – 2x-3_24x 6. ... 11y-3 = 14 - 2x ... 2x=-16. 1. x+y=-1 x 3-8. Solve each system of linear equations by substitution. ... elimination method.

Step-by-step explanation:

The answer is y=-11x-3/8

What is the equation of a direct variation that goes through the points (-6, 2) and (9, -3)?

y = -1/3 x
y = -3 x
3 - y = x
y = x - 3

Answers

The answer is A


-3-2=-5 -5 divided by 5= -1
9+6=15 15 divided by 5=3

Answer:

y = -1/3x

Step-by-step explanation:

what are two fractions that make 17/20. please don't respond if you don't know the answer because I'm wasting points please and thank you.

Answers

1. 34/40
2. 51/60
Hope this helps!!!!

Answer: 9/10 and 8/10

Step-by-step explanation:

Let's hope I'm rightt

Multiply four and eight tenths multiplied by three.

thirteen and one tenth
thirteen and four tenths
fourteen and two tenths
fourteen and four tenths

Answers

Fourteen and four tenths

Step-by-step explanation to answer:

(4 + 2/5)3

(4x3) + (2/5x3)

12 + 1 1/5

13 and 1/5 or 2/10

r+(-5r)


Combine the like terms to create an equivalent expression:

Answers

Answer:

Remove parentheses.

r-5r

Simplify.and the answer will be

-4r

Anytime love

Step-by-step explanation:

Sarah has all of the letters for the word WATERMELON in a bag. She chooses one letter, KEEPS it, then chooses another letter. What is the probability that she will choose the letter A and then the letter W?

1/9
1/18
1/90
2/9

Answers

Answer:

2/9

Step-by-step explanation:

y = -3x + 3

HELP I WILL GIVE BRAINLIEST TO BEST ANSWER 40 POINTS

Answers

Answer:

x=anything

Step-by-step explanation:

Answer:

(0,3)(1,0)

Step-by-step explanation:

I- GUESS WHO NEEDS HELP AGAIN...
I don't wanna fail math aaaa

Answers

Answer:

C

Step-by-step explanation:

Follow Pythagorean Theorem. a^2 + b^2 = c^2

We know b and c:

a^2 + 12^2 = 13^2

a^2 + 144 = 169

a^2 = 25

a = √25

a = 5

The answer is C because we know side a = 5

Give this branliest

I need help with this question that's attached

Answers

The answer is a certain combination of numbers or letters and spaces and maybe symbols that I will no tell
Explanation: common sense dude XD

Help with math I have to finish this for attendance

Answers

Answer:

she can make 40 baskets in 5 hours

Step-by-step explanation:

because there is 10 1/2 hours so 10 x 4= 40

Need help with an algebra question please and thank you ^^

Answers

flvs:( this is so sad

What fraction is greater than -2/3 and less than -1/2
A. -3/4 B. -7/12 C. -5/12 D. -3/8

Answers

A is the answer

Hope this helps...

C Is the correct answer

Sarah worked 8 more hours than Paida (algebraic expression) ___
Kumar has twice the number of goals as Jacob ___
Addison is 3 years younger than Nathan ___

Answers

x+8
2x
x-3
8 more hours
twice the number
3 years younger

Help with math I need, do not understand I do (yoda speech) lol.

Answers

It’s the purple one!
The correct answer is A.
This triangle is considered an acute triangle because all the angles are under 90 °

please help me with this

Answers

Answer:

D -55

Step-by-step explanation:

-55, since we put -1 and -3 instead of x and y. We multiply the result in the brackets by five. This gives us five

Answer:

The answer is C: -45

Step-by-step explanation:

Michelle ordered 200 T-shirts to sell at the school carnival. She paid $2.80 per shirt, plus 5% of the total order for shipping. When she sells each T-shirt at the carnival, she adds 150% markup to the total price she paid for the shirt (including the cost of shipping). What is the selling price of each T-shirt? help i only have 10 points but plz help

Answers

Answer: 4.18$ or 4.19$ per shirt (I’m not entirely sure my answer is correct but do what you must with this info)

Step-by-step explanation: 200 times 2.80 is 560,

5% of 560 is 588,

150% of 588 is 882,

and then 882 divided by 200 is 4.18 (or 4.19)

Help me with this math plz

Answers

Answer:yoo I would help but i cant rn but later

Step-by-step explanation:

I think the answer is 252

Please Help! How to simplify the exponential Expression of (2a^-4 b)^3 (3a^2 b^-2)^2
Thanks!
<3

Answers

The answer is 72/a^8b
72 over a^8b

Help Please I will Give Brainliest if Correct!!

Answers

Answer:

w exponent 6

_____________________

              9

Step-by-step explanation:

I hope this helps I couldn't write it correctly sorry

Please help meeeeeeeeeeeeeeee

Answers

Answer: the answer would be 143*

Explanation:
A line is 180, and angle T is 37. Subtract 180 - 37 = 143

Help pls I beg you ( '︵' )

Answers

Answer:

: 4x + 16 = 25 -3x =

Step-by-step explanation:

(15,0)


I’m pretty sure is right but if not sore

Please help me answer this :/

Answers

Answer:

Option C. 27m^6n^12 I'm assuming

Answer:

27m^6n^12

Step-by-step explanation:

:)

please help me im so confused

Answers

Answer:

the answer is 9w+2/3

Step-by-step explanation:

Please mark me branliest

Answer:

9w+23

Step-by-step explanation:

bc i kno

plz mark ME  brainilist

HELP PLS WHOEVER GETS IT RIGHT GETS BRAINLIEST AND A THANK U THIS IS URGENT


Lola ran 6.79 miles to prepare for her track meet today. If she runs this distance every day this week, how many miles will Lola run? (Remember, there are 7 days in one week).

Answers

Answer:

47.53 miles

Step-by-step explanation:

6.79×7= 47.53

Answer:

47.53 miles total for the week.

Step-by-step explanation:

so if she ran 6.79 for each 7 days that would be:

6.79 * 7 = 47.53

or

6.79 + 6.79 + 6.79 + 6.79 + 6.79 + 6.79 + 6.79 =  47.53

hope this helps!!

have a great rest of your day! :D

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