1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vsevolod [243]
3 years ago
7

There were 32 volunteers to donate blood. Unfortunately, n of the volunteers did not meet the health requirements, so they could

n't donate. The rest of the volunteers donated 470 milliliters each.
How many milliliters of blood did the volunteers donate?
Mathematics
1 answer:
sergey [27]3 years ago
5 0

Answer:

470(32 - n)

Step-by-step explanation:

Here are the given:

> 32 volunteers

> n volunteers who didn't donate

> 470 mL each

So your expression is: 470(32 - n).

Why?

Subtract the 32 volunteers who want to donate blood from the volunteers who were not able to donate then multiply it by 470.

Hope this helps!

You might be interested in
Expand.<br> (x^2)(x^2-6)
Liono4ka [1.6K]

Answer:

This can be expanded to x⁴ - 6x²

Step-by-step explanation:

x^2(x^2 - 6)\\= x^4 - 6x^2

5 0
2 years ago
Read 2 more answers
. If mZJ= (7x + 13)", mZK = (83 - 2x), and
OLga [1]

Answer:

  • m∠J = 76°
  • m∠K = 65°

Step-by-step explanation:

The sum of angle measures is ...

  (7x +13)° +(83 -2x)° = 141°

  5x +96 = 141 . . . . . collect terms, divide by °

  5x = 45 . . . . . . . . . subtract 96

  x = 9 . . . . . . . . . . . divide by 5

  7x +13 = 7·9 +13 = 76 . . . . . find m∠J

  m∠J = 76°

  m∠K = 141° -76°

  m∠K = 65°

8 0
3 years ago
Help me PLZZZZZZZ!!!!!!
eduard

Answer:

25% decrease

Step-by-step explanation:

Take the original amount of books and subtract the new number of books

20 -15 = 5

Divide by the original amount of books

5/20 = .25

Multiply by 100%

25%

It is a decrease since the amount went down

25% decrease

7 0
3 years ago
4y − 3x − 2y 11 x − 2 x
Inessa05 [86]
By rearranging it:
-3x-2x-22xy+4y
=-5x-22xy+4y answer
4 0
3 years ago
5x + 3 - 2x = 12 + 7x - 2 solution ??? SOMEONE HELPPP PLEASE !!
tensa zangetsu [6.8K]

Answer:

x = -7/4

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtract Property of Equality

<u>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

5x + 3 - 2x = 12 + 7x - 2

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Combine like terms:                                                                                        3x + 3 = 7x + 10
  2. [SPE] Subtract 3x on both sides:                                                                    3 = 4x + 10
  3. [SPE] Subtract 10 on both sides:                                                                      -7 = 4x
  4. [DPE] Divide 4 on both sides:                                                                         -7/4 = x
  5. Rewrite:                                                                                                           x = -7/4

<u>Step 3: Check</u>

<em>Plug in x into the original equation to verify it's a solution.</em>

  1. Substitute in <em>x</em>:                     5(-7/4) + 3 - 2(-7/4) = 12 + 7(-7/4) - 2
  2. Multiply:                                -35/4 + 3 + 7/2 = 12 - 49/4 - 2
  3. Add:                                      -23/4 + 7/2 = 12 - 49/4 - 2
  4. Add:                                      -9/4 = 12 - 49/4 - 2
  5. Subtract:                               -9/4 = -1/4 - 2
  6. Subtract:                               -9/4 = -9/4

Here we see that -9/4 does indeed equal -9/4.

∴ x = -7/4 is the solution to the equation.

8 0
3 years ago
Other questions:
  • Which equation represents a line parallel to 3x-8y=12?
    11·1 answer
  • Write a sentence with a perso in it for this. 2n + 4 = 24
    5·1 answer
  • What is the measure of B?
    13·2 answers
  • PLS SOMEONE HELP ME ASAP
    8·1 answer
  • How many minutes is 65% of 3 hours? ____ just write the number part of the answer.
    11·1 answer
  • What is the slope of a line thatpasses through the points (2,3) and (5,20)
    8·1 answer
  • The graph shows amounts of water and flour that can be used to make dough. Make a ratio table that represents a different ratio
    5·2 answers
  • A college graduate is considering two different companies to apply to for a job. Acme Corp lists this sample of salaries on thei
    10·1 answer
  • 2 × 989 =<br><br> Show your work using the area model.
    12·1 answer
  • What is the perimeter of the triangle below?<br><br><br> O 30<br> 015<br> 0 42<br> O 35
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!