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UkoKoshka [18]
3 years ago
15

3x^2-5x-7 find the sum and product​

Mathematics
1 answer:
Bad White [126]3 years ago
3 0

Answer:

s =  \frac{5}{3}

p =  \frac{7}{3}

Step-by-step explanation:

for this equation

a=3

b= -5

c = -7

The sum of equal to

-  \frac{b}{a}

and the product is equal to

\frac{c}{a}

. All you do is replace the values. You can prove both of those using the quadratic formula.

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How many different ways can 12 people line up to go to the same bathroom
Aneli [31]
There are 12! ways to line 12 people up.  That is 12 factorial (the name for the exclamation point
12! means 12 x 11 x 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1

Using a scientific calculator to compute 12!, we get 479,001,600 ways to line up 12 people.  I know it sounds amazing but here is a chart.

People            Ways

3                       6
4                      24  (Notice that if you multiply 6 x 4 you get 24)
5                     120  (Notice that if you muliply 24 x 5 you get 120  etc.)
6                     720
7                     5040
8                    40,320
9                    362,880
10                 3,628,880
11               39,916,800
12               479,001,600
6 0
3 years ago
Ali’s wage was increased from 120$ to 132$ per week. find the increase as fraction on its simplest form, as a percentage of the
Anettt [7]
Well the increase is 132/120. Simplify by dividing 12 from the numerator and the denominator, you should get 11/10.
11/10 is also 110%
7 0
2 years ago
Simplify 3x^2y^4 x 2x^6y
Feliz [49]

Answer:

6x^8y^5

Step-by-step explanation:

(3)(2)= 6

add the exponents for the variables

8 0
2 years ago
How tall is a stack of cube shaped blocks whose volumes are 375 cube inches, 648 cube inches, and 1029 cube inches?
djverab [1.8K]

Answer:

L = 25.959 inches

Step-by-step explanation:

Volume of first cube = 375 inch³

Volume of second cube = 648 inch³

Volume of third cube = 1029 inch³

We need to find the length of the stack of the cube shaped block.

We know that,

The volume of a cube = a³ (a is side of a cube)

a_1=\sqrt[3]{375} \\\\=7.211\ \text{inches}

a_2=\sqrt[3]{648 } \\\\=8.653\ \text{inches}

a_3=\sqrt[3]{1029}  \\\\=10.095\ \text{inches}

Hence, the total length of the stack is :

L = 7.211 + 8.653 + 10.095

= 25.959 inches

Hence, this is the required solution.

5 0
3 years ago
A cylinder and its dimensions are diameter 8.4 cm and height 10.9 cm. Which measurement is closest to the lateral surface area o
Vanyuwa [196]

Answer:

287.64

Step-by-step explanation:

6 0
3 years ago
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