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liraira [26]
3 years ago
7

How do you solve this

Mathematics
1 answer:
djverab [1.8K]3 years ago
8 0
You can use photo math
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Semenov [28]
X=3 because you subtract the three on both sides to get x alone. So you get: 7x=21 then you divide seven by 21 and get x=3
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3 years ago
PLZZZ problem 25 HELP
Arturiano [62]

Answer: 72 cm²

Step-by-step explanation: 1/2(base)(height) is the formula to find the area of a triangle. To find the area of the bigger triangle we substitute 10 cm for the base and 6 cm for the height.

1/2(10)(6)

1/2(60)

30 cm²

since we have two of the same triangles, we double that

we also have a smaller triangle. 14-10=4 which is the base of the smaller triangle.

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3 0
3 years ago
Find the distance between the points (4,-8) and (7-10).
Anastaziya [24]

Answer:

\displaystyle d = \sqrt{13}

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>

  • Coordinates (x, y)

<u>Algebra II</u>

  • Distance Formula: \displaystyle d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Step-by-step explanation:

<u>Step 1: Define</u>

Point (4, -8)

Point (7, -10)

<u>Step 2: Find distance </u><em><u>d</u></em>

Simply plug in the 2 coordinates into the distance formula to find distance <em>d</em>

  1. Substitute in points [DF]:                     \displaystyle d = \sqrt{(7-4)^2+(-10+8)^2}
  2. (Parenthesis) Subtract/Add:                \displaystyle d = \sqrt{(3)^2+(-2)^2}
  3. [√Radical] Exponents:                         \displaystyle d = \sqrt{9+4}
  4. [√Radical] Add:                                    \displaystyle d = \sqrt{13}
6 0
3 years ago
Read 2 more answers
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