MATHEMATICS HIGH SCHOOL

What is 70/x = 15/21?

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

cross multiply

70×21÷15

1470/15=98

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Write the product as a trinomial.(2r – 5)(r + 10)

2r² – 25r – 50

2r² – 50

3r² + 5r + 50

2r² + 15r – 50

Answers

1. 2r-5
2. -21r-50
3. 4r-50
4. 14r+50
5. 19r-50

Please help me thank u

Answers

simplify inside the ( )'s first, reducing the 6 with the 3 leaving a 2 in the numerator, and reducing the x³ with the x^4, leaving an x in the denominator:
(2/x)²

square both numerator an denominator:

4/x² check this one not sure just what I know though...tell me if it helps

What is x?
3(x - 4) - 14 = 2(x - 7) + 6

Answers

$3(x - 4) - 14 = 2(x - 7) + 6 \n \n 3x - 12 - 14 = 2x - 14 + 6 \ / \ expand \n \n 3x - 26 = 2x - 14 + 6 \ / \ simplify \n \n 3x - 26 = 2x - 8 \ / \ simplify \n \n 3x = 2x - 8 + 26 \ / \ add \ 26 \ to \ each \ side \n \n 3x = 2x + 18 \ / \ simplify \n \n 3x - 2x = 18 \ / \ subtract \ 2x \ from \ each \ side \n \n x = 18 \ / \ simplify \n \n$

The final result is x = 18.

3(x - 4) - 14 = 2(x - 7) + 6
⇒ 3x+ 3(-4) -14= 2x+ 2*7+ 6 (distributive property)
⇒ 3x -12 -14= 2x -14+ 6
⇒ 3x+ (-12 -14)= 2x+ (-14+ 6) (combine like terms)
⇒ 3x -26= 2x -8
⇒ 3x -2x= -8+ 26 (inverse operation)
⇒ x= 18

Final answer: x= 18.

What is the value of n in the equation below?StartFraction a Superscript n Over a cubed EndFraction = a Superscript 9
3
6
12
27

Answers

Answer

Step-by-step explanation:

in this equation , since its a fraction you would divide. With the exponents it would be subtraction. therefore, making it 12 I hope this helps :)

Answer:

Step-by-step explanation:

got 100 on the test.

What is the general form of the equation of a circle with center at (a, b) and radius of length m?. A. x2 + y2 − 2ax − 2by + (a2 + b2 − m2) = 0 . . B.x2 + y2 + 2ax + 2by + (a2 + b2 − m2) = 0. C. x2 + y2 − 2ax − 2by + (a + b − m2) = 0. D. x2 + y2 + 2ax + 2by + a2 + b2 = -m2.

Answers

The generic equation of the circle is given by:
$(x-xo) ^ 2 + (y-yo) ^ 2 = r ^ 2$
Where,
r: radius of the circle
(xo, yo): center of the circle.
The center of the circle in this case is:
$(xo, yo): (a, b)$
The radius of the circle is:
$r = m$
Substituting values we have:
$(x-a) ^ 2 + (y-b) ^ 2 = m ^ 2$
Rewriting the equation we have:
$x ^ 2 - 2ax + a ^ 2 + y ^ 2 - 2by + b ^ 2 - m ^ 2 = 0x ^ 2 + y ^ 2 - 2ax - 2by + a ^ 2 + b ^ 2 - m ^ 2 = 0$
Answer:
The general form of the equation of a circle with center at (a, b) and radius of length m is:
$x ^ 2 + y ^ 2 - 2ax - 2by + a ^ 2 + b ^ 2 - m ^ 2 = 0$
option A

The general form of the equation of a circle with center at (a, b) and radius of length m is B.x2 + y2 + 2ax + 2by + (a2 + b2 − m2)

the standard equation for a circle is: (x-a)^2 + (y-b)^2 = m^2

x-a)^2 + (y-b)^2 = m^2

means(x-a)(x-a) + (y-b)(y-b) = m^2 then you foil

x^2 - 2ax + a^2 + y^2 - 2by + b^2 = m^2

Faye used a stopwatch to find that in 352 minutes, she read 88 pages.Measured in seconds, how long did it take Faye to read 1 page?

Answers

88 pages = 352 minutes
1 page = 352/88 = 4 minutes
4 minutes = 240 seconds.

For Faye to read 1 page, it took her 240 seconds

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