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3 years ago

Help please don’t understand.

Mathematics

1 answer:

sergij07 [2.7K]3 years ago

4 0

Okay so first, area is length times width, so 1/4x*x would be first = 1/4(x^2)=64. Then area or x = 16 or -16

perimeter would be width times two plus length times two. I recommend using math papa to calculate these numbers.

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Estimate the solution to the system of equations 7x−y=7 x+2y=6 i need help

Yanka [14]

Answer:

(4/3, 7/3)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Algebra I

Terms/Coefficients
Coordinates (x, y)
Solving systems of equations of using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

7x - y = 7

x + 2y = 6

Step 2: Rewrite Systems

Equation: x + 2y = 6

[Subtraction Property of Equality] Subtract 2y on both sides: x = 6 - 2y

Step 3: Redefine Systems

7x - y = 7

x = 6 - 2y

Step 4: Solve for y

Substitution

Substitute in x: 7(6 - 2y) - y = 7
Distribute 7: 42 - 14y - y = 7
Combine like terms: 42 - 15y = 7
[Subtraction Property of Equality] Subtract 42 on both sides: -15y = -35
[Division Property of Equality] Divide -15 on both sides: y = 7/3

Step 5: Solve for x

Define original equation: x + 2y = 6
Substitute in y: x + 2(7/3) = 6
Multiply: x + 14/3 = 6
[Subtraction Property of Equality] Subtract 14/3 on both sides: x = 4/3

7 0

3 years ago

The quantity of soda consumed per week at a soda fountain is 34 liters, with a standard deviation of 5.8 liters. If any 80 weeks

Mama L [17]

5.8/ sqrt 80=0.648 I think you are asking for the standard margin
Hope this works

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3 years ago

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andreev551 [17]

If te squre is inscribe in the cercle ten:The area of the circle is πR²

& the Area of te square is 2R², then the probability to land in the square :

2R²/πR²=2/π=0.6366 or 63.66%

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3 years ago

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Answer:

Any shape with 4 sides will be a quadrilateral!

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Hope this helps! :)

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3 years ago

IMG_0859.HEIC PLEASE HELP!!!

amm1812

Answer:

The answer is nothing

Step-by-step explanation:

Because you didn't put a question you just said "IMG_0859.HEIC PLEASE HELP!!! "

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3 years ago

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