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kykrilka [37]
2 years ago
12

A blood bank needs 7 people to help with a blood drive. 17 people have volunteered. Find how many different groups of 7 can be f

ormed from the 17 volunteers.​
Mathematics
2 answers:
Delicious77 [7]2 years ago
8 0
2 groups of 7 can be formed with 3 people left over
Andreas93 [3]2 years ago
7 0

Answer:

ay no sirrr

Step-by-step explanation:

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5(x+4)= -2(-4-x)+3 <br> what is the answer?
lianna [129]

Answer:

x = -3

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

<u>Step 1: Define equation</u>

5(x + 4) = -2(-4 - x) + 3

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

  1. Distribute:                                   5x + 20 = 8 + 2x + 3
  2. Combine like terms:                   5x + 20 = 2x + 11
  3. Subtract 2x on both sides:        3x + 20 = 11
  4. Subtract 20 on both sides:        3x = -9
  5. Divide 3 on both sides:              x = -3

<u>Step 3: Check</u>

<em>Plug in x to verify it's a solution.</em>

  1. Substitute:                    5(-3 + 4) = -2(-4 - -3) + 3
  2. Simplify:                        5(-3 + 4) = -2(-4 + 3) + 3
  3. Add:                              5(1) = -2(-1) + 3
  4. Multiply:                        5 = 2 + 3
  5. Add:                              5 = 5

Here we see that 5 does indeed equal 5. ∴ x = -3 is a solution of the equation.

And we have our final answer!

5 0
3 years ago
Read 2 more answers
A shop sells apples and oranges in the ratio 5:2.
atroni [7]
Found a great explanation + 1105p = £11.05

5 0
2 years ago
) Lucy, Soling, Kyan, and Daniel are ordering dinner for their families. Each person spends
melisa1 [442]

Answer:

Lucy is 5(m+3)=65

Soling is 5m-3=65

Kyan is 5m+3=65

Daniel is 5(m-3)=65

Step-by-step explanation:

3 0
3 years ago
At a​ school, 129 students play at least one sport. This is 30​% of the students at the school. How many students are at the​ sc
kkurt [141]
129/x=30/100
30x=12900
x=430
430 students
3 0
3 years ago
Lines l and m are intersected by transversal t and l // m. If m​
marissa [1.9K]

Answer:

angle 7 is 112

Step-by-step explanation:

angles 2 and 6 are congruent, and vertical angles are also congruent, so you know that angles 2 and 7 have the same value

4 0
3 years ago
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