3 years ago

What is the answer to number 6? Please break it down and explain.

Mathematics

1 answer:

snow_tiger [21]3 years ago

8 0

Answer:

-2 or -5

Step-by-step explanation:

(2x − 8) / (x² + 7x + 10) is an invalid expression when the denominator is 0.

x² + 7x + 10 = 0

(x + 2) (x + 5) = 0

x = -2 or -5

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The solution set of a linear system whose augmented matrix is [a b c d] is the same as the solution set of Ax = d, where A = [a

Charra [1.4K]

Answer:

True

Step-by-step explanation:

First statement

[a b c | d][x]

[a b c]x=d

ax+bx+cx=d

Second statement

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Given that A = [a b c]

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Then, they are going to have the same solutions

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Which expression is equivalent to 4(5j + 7)?

frozen [14]

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Step-by-step explanation:

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3 years ago

For which equation is x = 9 a solution? A. 3x – 7 = –34 B. x – 9 = 1 C. 2003-05-02-00-00_files/i0020000.jpg D. 4x + 5 = 41

Monica [59]

X=9

A) 3x-7=34
3x= 34+7
3x= 41
x= 41/3

B) x-9=1
x=1+9
x=10

C) dude what is this

D) 4x+5=41
4x=41-5
4x=36
x=36/4
x=9 YAYY

Hope it helps!
#MissionExam001

7 0

3 years ago

A meter stick casts a shadow 2.4 m long at the same time a flagpole casts a shadow 9.7 m long. How tall is the flagpole

Luda [366]

The first thing we are going to do is draw a diagram of the situation to help us to solve the situation.
We an draw tow similar triangle between the length of the shadows and the height of the stick and the pole.
Since <span>meter stick has a length of 1 meter, the height of our smaller triangle is 1 meter. Let </span> $h$ be height of of the pole. Since both triangles are similiar we can establish a proportion between their corresponding sides and solve for $h$ :
$\frac{h}{1} = \frac{9.7}{2.4}$
$h=\frac{9.7}{2.4}$
$h=4.04$

We can conclude that the pole is 4.04 meters tall.

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If a and b are independent events then it must be true that P(A|B)=P(A). TRUE OR FALSE.

Vesnalui [34]

This would be true because it shows that p equals either a or b and it also shows that p equals a which is true because it is one of the independent choices.

6 0

3 years ago

Read 2 more answers