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Reptile [31]
2 years ago
9

Please Help I’ve been stuck on these questions for a while now!

Mathematics
1 answer:
atroni [7]2 years ago
8 0

Answer:

written below for problem #2

Step-by-step explanation:

a. ratio is 12:40 since they're are 12 non fiction and 40 graphic novels

b. 40:12 (same reasoning as part a)

c. 6:40 for the ratio of science fiction to graphic novel, 12:6 for the ration of non fiction to science fiction, x:6 for the ratio of the unknown amount of fiction books to the science fiction books. (x is just there as a variable so it just represents fiction books)

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lidiya [134]
The mode is what appears the most so 15 is the answer because it appears the most.
8 0
2 years ago
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Find the third side in simplest radical form:
larisa [96]

Answer:

x = √53

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

<u>Trigonometry</u>

  • [Right Triangles Only] Pythagorean Theorem: a² + b² = c²

Step-by-step explanation:

<u>Step 1: Define</u>

We are given a right triangle. We can use PT to solve for the missing length.

<u>Step 2: Identify Variables</u>

Leg <em>a</em> = 6

Leg <em>b</em> = <em>x</em>

Hypotenuse <em>c</em> = √89

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

  1. Set up equation:                    6² + x² = (√89)²
  2. Isolate <em>x</em> term:                        x² = (√89)² - 6²
  3. Exponents:                             x² = 89 - 36
  4. Subtract:                                 x² = 53
  5. Isolate <em>x</em>:                                 x = √53
5 0
2 years ago
What goes in the space? (3x − ...)2 = 9x2−6x+1<br> I will give points and brainliest!
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{(x - y)}^{2}  =  {x}^{2}  - 2xy +  {y}^{2}

(3x - ...)^{2}  = 9 {x}^{2}  - 6x + 1 \\  {(3x - 1)}^{2}  = 9 {x}^{2}  -6x + 1

6 0
3 years ago
HELP!!!!!!!!!
Anastasy [175]

Answer:

∠ABC ≅ ∠DEC

∠DEC = ∠GEF

thus:

∠ABC = ∠GEF

∠GFE ≅ ∠DCE

∠DCE = ∠ACB

thus:

∠ACB = ∠GFE

If two of their angles are equal, then the third angle must also be equal, because angles of a triangle always add to make 180°.

thus: ΔABC ∼ ΔGEF by AA similar triangle postulate

I hope this helps

3 0
2 years ago
Maria spends $20 on lottery tickets every week and spends $125 per month on food. On an annual basis the money spent on the lott
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Divide $20 by $125 because you are trying to find the % of the tickets to the food.

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I think :)
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