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3 years ago

(y-7)^2=2y^2-4y+73 solve for y

Mathematics

1 answer:

masya89 [10]3 years ago

7 0

Answer:

y=-4 or y=-6

Step-by-step explanation:

y^2-14y+49=2y^2-4y+73

y^2+10y+24=0

(y+4)(y+6)=0

y=-4 or y=-6

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May someone solve and give explanation

skelet666 [1.2K]

Answer:

θ = 49.4584°

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Trigonometry

[Right Triangles Only] SOHCAHTOA
[Right Triangles Only] cosθ = adjacent over hypotenuse
Inverse Trig

Step-by-step explanation:

Step 1: Define

Identify variables

Angle θ = ?

Adjacent Leg = 13

Hypotenuse = 20

Step 2: Find Angle

Substitute in variables [cosine]: cosθ = 13/20
Inverse Trig: θ = cos⁻¹(13/20)
Evaluate: θ = 49.4584°

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3 years ago

What is the answer to 5 times 3/8

Klio2033 [76]

1.875 because ⅜ or 5 is 1.87 or 1.9 if you round it.

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3 years ago

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64 is 4 times the difference between Sarah's age, a, and 44. Assume Sarah is older than 44.

nlexa [21]

Answer:

Sarah is 60 years old

Step-by-step explanation:

64 divided by 4 is 16. Add 16 to 44 to get Sarah's age, 60

3 0

3 years ago

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Geometry question need help finding the answer.

Xelga [282]

Answer: 1208.96

Step-by-step explanation:

The volume of the cylinder is $(\pi)(4^2)(4)=64\pi$

The volume of the prism is $(6)(12)(14)=1008$

So, the total volume is $1008+64\pi=\boxed{1208.96}$

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2 years ago

Trigonometry heeellllppp plzzzz

algol [13]

Answer:

x ≈ 3.4 cm

Step-by-step explanation:

Using the sine ratio in the right triangle

sin57° = $\frac{opposite}{hypotenuse}$ = $\frac{x}{4}$ ( multiply both sides by 4 )

4 × sin57° = x , thus

x ≈ 3.4 cm ( to 1 dec. place )

3 0

3 years ago