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dmitriy555 [2]
3 years ago
10

Ms karane orders a total of 350 black, blue and red pens for the school she orders 170 black pens and she orders 120 blue pens.

Which equation can be used to find r the number of red pens ms.karone orders?
Mathematics
2 answers:
Mila [183]3 years ago
7 0

Step-by-step explanation:

The answer is

120 + 170 + r = 350

Where r = red pen

grin007 [14]3 years ago
6 0

Answer:

170+120+r=350

Step-by-step explanation:

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Draw a line representing the rise and a line representing the run of the line. State the slope in the simplest form
USPshnik [31]

Answer:

m=\frac{2}{3}

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>Algebra I</u>

  • Slope Formula: m=\frac{y_2-y_1}{x_2-x_1}

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Find points from graph.</em>

Point (1, -5)

Point (7, -1)

<u>Step 2: Find slope </u><em><u>m</u></em>

Simply plug in the 2 coordinates into the slope formula to find slope <em>m</em>

  1. Substitute [SF]:                    m=\frac{-1+5}{7-1}
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6 0
2 years ago
Write x2 - 8x + 13 = 0 in the form (x - a)2 = b, where a and b are integers. a.)(x - 4)2 = 3 b.) (x - 3)2 = 2 c.)(x - 2)2 = 1 d.
loris [4]
The answer is <span>a.)(x - 4)2 = 3.

(x - a)</span>² = b can be expressed as:
x² - 2ax + a² = b                                 ⇒ x² - 2ax + a² - b = 0

Our equation is                x² - 8x + 13 = 0.
The general formula is    x² - 2ax + (a² - b) = 0

Thus:
8x = 2ax    and a² - b = 13

Divide both sides of the first equation (8x = 2ax) by x:
8 = 2a           ⇒ a = 8 ÷ 2 = 4

Replace a in the second equation (a² - b = 13):
4² - b = 13     ⇒ b = 4² - 13 = 16 - 13 = 3

Now when we have a and b, let's just replace them in the general equation:
(x - a)² = b
(x - 4)² = 3
4 0
3 years ago
Help asap thx u and plz if u do help say the number for the ancer 1-5
lesya692 [45]
1b,
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4 0
3 years ago
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There is a list of seven numbers. The average of the first four numbers is 5, and the average of the last four numbers is 8. If
sammy [17]

Answer:

6

Step-by-step explanation:

Sum of first 4 numbers= 4*5= 20

This includes 3 + 4th number

Sum of last 4 numbers= 4*8= 32

This includes 4th number + 3

Sum of 7 numbers= 7*(6+4/7)= 46

This includes 3+4th number +3

Number common to both sets= (20+32)- 46 = 6

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3 years ago
What is the value of y in the solution to the following system of equations?
dedylja [7]

Answer:

{x,y} = {33/19,-2/19}

Step-by-step explanation:

6 0
3 years ago
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