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k0ka [10]
2 years ago
15

Insert grouping symbols so that the given expression has a value of 25. 12 – 7 + 2 • 4 + 6

Mathematics
1 answer:
katovenus [111]2 years ago
4 0
(12-7)+2(4+6) is the one thats value is 25
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A garden measures 6 feet by 7 feet. A gravel path of constant width is placed around the garden so that the total area is 72 squ
frosja888 [35]
the answer is 114 because first u have to × and then +
4 0
2 years ago
Read 2 more answers
What does the quadratic function
nikklg [1K]

Answer:

f(x) = (x -3)^2 - 1

Step-by-step explanation:

f(x) = x^2 - 6x + 8

a = 1, b = -6 and c = 8

So we are finding half of the b equation (ignore the negative sign)

Half of 6 is 3, so we are going to square 3 (3^2 = 9) and add 9 to the left side and subtract 9 to the right side

(x) = (x^2 - 6x + 9) + (8 - 9)

You can tell the polynomial is a perfect square, so we will have to factor it using the perfect square method

(x^2 - 6x + 9)

square toot of x^2 is x and square root of 9 is 3 and the operation sign after the a number is a minus sign

(x -3)^2

Don't forget the rest of the equation from before

(x -3)^2 + (8 - 9)

(x -3)^2 - 1

So the equation is f(x) = (x -3)^2 - 1

6 0
2 years ago
The three sides of a triangle are n, 4n−8, and 2n+8. If the perimeter of the triangle is 63 feet, what is the length of each sid
svlad2 [7]

Answer:

  9 ft, 28 ft, 26 ft

Step-by-step explanation:

The perimeter is the sum of side lengths, so ...

  P = a + b + c

  63 = n +(4n -8) +(2n +8) . . . . fill in the given side lengths

  63 = 7n . . . . . . simplify

  9 = n . . . . . . . . divide by 7

  4n -8 = 36 -8 = 28 . . . . second side length

  2n +8 = 18 +8 = 26 . . . . third side length

The side lengths are 9 ft, 28 ft, 26 ft..

8 0
3 years ago
Find the length of the arc on a circle of radius 12 feet intercepted by a central angle of 150°.
stich3 [128]
Let A = arc length of circle

A = 2πr•(degree/360°)

A = 2π(12)(150°/360°)

A = 24π(150°/360°)

Calculate the right side to find A and you're done. Take it from here.
5 0
2 years ago
What is a square root?<br> DO NOT USE GOOGLE TO ANSWER THIS.
Afina-wow [57]

Sure.

A square root is the number or factor that, when multiplied by itself, will equal the number.

For example:

√49 = 7 (read as "the square root of 49 equals seven"

7 * 7 = 49 (read as "seven times seven equals 49"

7^2 = 49 (read as "seven squared equals 49"

Using an exponent and raising a number to the power of 2 squares it, which multiplies it by itself.

It is helpful to memorize all square roots up to 144, which is 12.

7 0
3 years ago
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