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Amiraneli [1.4K]
3 years ago
15

Use complete sentences to describe the similarities and differences between an expression and an equation.

Mathematics
1 answer:
nirvana33 [79]3 years ago
3 0
Which class ques is this
You might be interested in
If AC = 3, BC = 5, and AB = 7, find AD:<br> 2 5/8<br> 4 1/5<br> 4 3/8<br> 11 2/3
Vesna [10]

Answer:

1.  2\frac{5}{8}  

Step-by-step explanation:

We can see that CD is angle bisector, So we will use angle bisector theorem which states that the angle bisector of an angle of a triangle divides the opposite side in two segments that are proportional to the other two sides of the triangle.

We can set up an equation as:  

\frac{AC}{AD}=\frac{BC}{BD}

Upon substituting our given values we will get,

\frac{3}{AD}=\frac{5}{(7-AD)}}

Cross multiplying our equation we will get,

5AD=3*(7-AD)

5AD=21-3AD

5AD+3AD=21

8AD=21

AD=\frac{21}{8}

AD=2\frac{5}{8}

Therefore, the length of AD is 2\frac{5}{8} units and 1st option is the correct choice.

6 0
3 years ago
What is the simplest form of the expression 2x(x â’ 6) â’ 7x2 â’ (13x â’ 3)? A. 5x2 â’ 25x 3 B. -5x2 â’ 25x 3 C. -5x2 x 3 D. -5x
kobusy [5.1K]

The simplest form of the given expression can be written as -5x² + 25x - 3.

The given parameters:

2x(x + 6) - 7x²  + (13x - 3)

The given expression can be simplified as follows;

2x(x + 6) - 7x² +  (13x - 3)

= 2x² + 12x -  7x² + 13x - 3

<em>collect similar terms together</em>

= (2x² - 7x²)  + (12x + 13x) - 3

= -5x² + 25x - 3

Thus, the simplest form of the given expression can be written as -5x² + 25x - 3.

Learn more about simplification of algebras here: brainly.com/question/432678

7 0
3 years ago
-6+7x =-2x+57 What is this?​
crimeas [40]

Answer:

x = 7

Step-by-step explanation:

-6+7x = -2x+57

+6+2x +2x+6

9×/9 = 63/9

× = 7

8 0
3 years ago
Find the roots of y= -3^2 - 5x +1
Reil [10]

Answer:

The right answer is the second

Step-by-step explanation:

D=b^2-4ac

D=25+12

D=37

7 0
3 years ago
50 POINTS
Snowcat [4.5K]

Answer:

-1

Step-by-step explanation:

took the exam on edge

5 0
3 years ago
Read 2 more answers
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