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FromTheMoon [43]
2 years ago
12

For the following, write an equivalent expression in standard form: (5x2 + 6x - 2) + 4x (3x – 7).

Mathematics
1 answer:
Roman55 [17]2 years ago
7 0

Answer:

17x^2 -22x -2

Step-by-step explanation:

  1. 5x^2 +6x -2 +4x (3x-7)
  2. 5x^2 +6x -2 +12x^2 -28x
  3. 17x^2 +6x -2 -28x
  4. Answer: 17x^2 -22x -2

Just so you know when I put (^) the number after it is a exponent.

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Answer: 3.4

Step-by-step explanation: Because, you're rounding to the nearst tenth and .36 has a 6 in it anything above a 5 you round up and anything under you round down.

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2 years ago
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janelle and Jacob are considering a $130,000 mortgage for 30 years at 4.8%. With this information, their monthly payment would b
Gala2k [10]

Answer:

sbbz

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2 years ago
this is formula manipulation, I'd appreciate if the steps were provided. only respond if you know how to get the answer, thank y
marissa [1.9K]

Answer:

  1. r = 3V/(2πh²)
  2. h = 3V/b²
  3. r = 25/π cm ≈ 7.9577 cm
  4. w = 15 cm

Step-by-step explanation:

1. Multiply both sides of the equation by the reciprocal of the coefficient of r.

V\cdot\dfrac{3}{2\pi h^2}=r\\\\r=\dfrac{3V}{2\pi h^2}

__

2. Multiply both sides of the equation by the reciprocal of the coefficient of h.

V\cdot\dfrac{3}{b^2}=h\\\\h=\dfrac{3V}{b^2}

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3. Solve the circumference formula for r, then substitute the given information.

C=2\pi r\\\\r=\dfrac{C}{2\pi}\qquad\text{divide by the coefficient of r}\\\\r=\dfrac{50\,\text{cm}}{2\pi}=\dfrac{25}{\pi}\,\text{cm}\approx 7.9577\,\text{cm}

__

4. Solve the perimeter formula for width, the substitute the given information and do the arithmetic.

P=2(L+W)\\\\\dfrac{P}{2}=L+W\qquad\text{divide by 2}\\\\\dfrac{P}{2}-L=W\qquad\text{subtract L}\\\\\dfrac{40\,\text{cm}}{2}-5\,\text{cm}=W=15\,\text{cm}

_____

In general, solving for a particular variable involves "undoing" what has been done to the variable, usually in the reverse order. In part 4, the variable W has L added and the sum is multiplied by 2. We "undo" those operations, last operation first, by dividing by 2 and subtracting L.

The properties of equality say you can do what you like to an equation as long as you do the same thing to both sides of the equation. So, when we say "divide by 2", we mean "divide both sides of the equation by 2." Likewise, "subtract L" means "subtract L from both sides of the equation."

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3 years ago
*WILL GIVE BRAINLIEST IF U GIVE BEST ANSWER AND HELP ME PASS THIS*<br> Solve for g.<br> 2 = g4− 1
KonstantinChe [14]

Answer:

0.75 is it  the answer

Step-by-step explanation:

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2 years ago
The function c(p)= 0.99p represents the cost in dollars of p pounds of peaches. if the cost per pound increases by 10%, how will
RideAnS [48]
C i think is the right answer
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