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kolezko [41]
2 years ago
9

(Repost) School is starting, and the teacher is giving each student 2 new pencils. She has 8 rows with 4 desks in each row. Whic

h method (s) below will show her how many pencils she will need?
A. 2 x 8 + 16, 16 x 4
B. 2 x 4 + 8, 8 x 8
C. 4 x 8 + 32, 2 x 32
-------------------------------------
A. Only method A
B. Only method A and B
C. Only method B and C
D. Only method A, B, and C
Mathematics
2 answers:
liubo4ka [24]2 years ago
7 0

A

2 x 8+16 = 32 16 x 4 = 64

B

2 x 4 +8 = 16 8 x 8 = 64

C

4 x 8 + 32 = 64  2 x 32 = 64

1  l l l l   8              5 l l l l     40

2 l l l l   16             6 l l l l     48

3 l l l l   24            7 l l l l      56

4 l l l l   32            8 l l l l      64

The teacher has 64 or more pencils to give out.

<em>Hope this helps you choice your answer. :) </em>

creativ13 [48]2 years ago
5 0
D.) only method A, B, and C,
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The jeweler buys gold for 1235.55 per ounce and resells it for 1376.44 per ounce how much profit does the jeweler make from buyi
AnnZ [28]

Profit made by jeweler from buying and reselling ounces of gold is 140.89 per ounce

<u>Solution:</u>

Given that

Price at which jeweler buy gold = 1235.55 per ounce

Price at which jeweler resells gold = 1376.44 per ounce

We need to calculate profit.

Buying price of 1 ounce of gold = 1235.55

Reselling price of 1 ounce of gold = 1376.44  

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So profit on 1 ounce of gold = 1376.44 – 1235.55 = 140.89  

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4 0
3 years ago
Solve the system by substitution <br><br> Y= -7x + 6 <br> Y = - 10x<br><br><br> Plz help
snow_tiger [21]

Answer:

(-2, 20)

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<u> </u>

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Algebra I</u>

  • Coordinates (x, y)
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Step-by-step explanation:

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

y = -7x + 6

y = -10x

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

<em>Substitution</em>

  1. Substitute in <em>y</em> [1st Equation]:                                                                           -10x = -7x + 6
  2. [Addition Property of Equality] Add 7x on both sides:                                   -3x = 6
  3. [Division Property of Equality] Divide -3 on both sides:                                x = -2

<u>Step 3: Solve for </u><em><u>y</u></em>

  1. Substitute in <em>x </em>[2nd Equation]:                                                                         y = -10(-2)
  2. Multiply:                                                                                                             y = 20
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3 years ago
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AlladinOne [14]

The distance formula between two points is d∧2=(x2-x1)∧2 + (y2-y1)∧2

The distance between Vista and Oceanside is

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d2∧2=(0-(-1))∧2+(-1-6)∧2=1+(-7)∧2=1+49=50 => d2=√50=7.07

The distance between Vista and Alpena is

d3∧2=(0-(-6))∧2+(-1-2)∧2=36+9=45 => d3=√45= 6.7

Answer a) is Oceanside and Alpena

Answer b) is Vista and Oceanside

Good luck!!!

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serious [3.7K]

Answer:

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Step-by-step explanation:

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lozanna [386]

Answer: V = 262\frac{1}{2} cm^{3}

Step-by-step explanation:

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V = \frac{525}{2}

V = 262\frac{1}{2} cm^{3}

7 0
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