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3 years ago

8

Only if you know. Please help !

1 answer:

garri49 [273]3 years ago

8 0

A. Focus

Hope that helps!

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The value of 21b - 32 + 7 b - 20 b is

Aleonysh [2.5K]

8b - 32

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Best luck with your studying

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3 years ago

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Which sum will be neither positive nor negative. a. 3+2 b. -4+(-4) c. -6+6 d. 7+(-6)

anastassius [24]

Answer:

c

Step-by-step explanation:

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3 years ago

Target sells 24 bottles of water for $3 and thirty six bottles of water for $4 which is a better buy

GenaCL600 [577]

Answer:24/3=8 and 36/4=9

Step-by-step explanation:36 bottles for 4$ better deal *merry christmas* PLz brainliest

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3 years ago

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What is the surface area to volume ratio of a 5 cm cube?

joja [24]

Answer: 6/5

Explanation:
Given: 5cm cube
This means each side is 5 cm because a cube has equal sides.

Area of a square is length times width so area of 1 side of a cube:
= 5 x 5
= 25

Surface area is the area of one side of a cube times the number of sides. Now, how many sides does a cube have? 6
= 25 x 6
= 150

Surface area of a 5cm cube = 150

Volume is length times width times height:
= 5 x 5 x 5
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Ratio of surface area to volume:
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6 0

3 years ago

What are the approximate values of the non-integral roots of the polynomial equation?

irga5000 [103]

Answer:

-4, -2, -3-2i, -3+2i

Step-by-step explanation:

The of the polynomial equation are those values of x, for which f(x)=0.

Consider equation

$f(x)=0\\ \\(x^2+6x+8)(x^2+6x+13)=0$

By zero product property,

$x^2+6x+8=0\ \text{or}\ x^2+6x+13=0$

Solve each equation:

1. $x^2+6x+8=0$

$D=6^2-4\cdot 8=36-32=4\\ \\x_{1,2}=\dfrac{-6\pm \sqrt{4}}{2}=\dfrac{-6\pm 2}{2}=-4,\ -2$

2. $x^2+6x+13=0$

$D=6^2-4\cdot 13=36-52=-16=16i^2\\ \\x_{1,2}=\dfrac{-6\pm \sqrt{16i^2}}{2}=\dfrac{-6\pm 4i}{2}=-3-2i,\ -3+2i$

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3 years ago

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