3 years ago

What is the prime factorization of 72? 22 × 32 22 × 33 23 × 32 23 × 33

Mathematics

2 answers:

Mekhanik [1.2K]3 years ago

8 0

Answer:

23 × 32

Step-by-step explanation

marissa [1.9K]3 years ago

5 0

Answer: its C

Step-by-step explanation:

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Factor the quadratic equation below to reveal the solutions. X^2+4x-21=-9

a_sh-v [17]

Answer:

x = 3 and x = -7

Step-by-step explanation:

The given quadratic equation is $x^2+4x-21=0$ . We need to find the solution of this equation.

If the equation is in the form of $ax^2+bx+c=0$ , then its solutions are given by :

$x=\dfrac{-b\pm \sqrt{b^2-4ac} }{2a}$

Here, a = 1, b = 4 and c = -21

Plugging all the values in the value of x, such that :

$x=\dfrac{-b+ \sqrt{b^2-4ac} }{2a},\dfrac{-b- \sqrt{b^2-4ac} }{2a}\\\\x=\dfrac{-4+ \sqrt{(4)^2-4\times 1\times (-21)} }{2(1)},\dfrac{-4- \sqrt{(4)^2-4\times 1\times (-21)} }{2(1)}\\\\x=3, -7$

So, the solutions of the quadratic equation are 3 and -7.

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3 years ago

Someone please help for a brainly

ivolga24 [154]

Answer:

it's 3 it's it

Step-by-step explanation:

trust me okay I promise dude I a easy yes yes 3

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2 years ago

224 students out of 560 students chose chocolate ice cream. What percent is this?

Dahasolnce [82]

Answer:

Just divide the 224 out of the total 560

40%

Step-by-step explanation:

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2 years ago

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Does One-half hour equals , 2 one quarter hours

Ghella [55]

Half an hour= two quarters of an hour

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2 years ago

Blake collects coins. He collected a total of 225 coins. If 68% of the coins he collected were foreign, how many other coins d

Bingel [31]

Answer: 72

Step-by-step explanation:

convert 68% to decimal:

0.68

Multiply by 225

0.68*225

= 153

Subtract:

225-153=
72

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2 years ago