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3 years ago

What property does the following expression demonstrate? 9(3x) = (9x3)x

Mathematics

2 answers:

Kazeer [188]3 years ago

5 0

9514 1404 393

Answer:

associative property of multiplication

Step-by-step explanation:

We assume your equation is ...

9(3x) = (9·3)x

The parentheses have moved to a different portion of the product. This is allowed by the associative property of multiplication. It lets you associate parts of the product any way you like.

_____

Additional comment

It is not a good idea to use "x" to indicate multiplication in an expression in which "x" is a variable. There are many other ways to indicate multiplication, including using the "times" symbol (×).

Katena32 [7]3 years ago

3 0

Answer: x=0,\root(3)(3)

Step-by-step explanation: Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

Brainliest or a thank you please? :))

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In △ABC, m∠A=57°, m∠B=37°, and a=11. Find c to the nearest tenth.

kykrilka [37]

Answer:

$c=13.1\ units$

Step-by-step explanation:

step 1

Find the measure of angle C

Remember that the sum of the interior angles of a triangle must be equal to 180 degrees

A+B+C=180°

we have

A=57°

B=37°

substitute

57°+37°+C=180°

94°+C=180°

C=180°-94°=86°

step 2

Find the measure of side c

Applying the law of sines

$\frac{a}{sin(A)}=\frac{c}{sin(C)}$

substitute

$\frac{11}{sin(57\°)}=\frac{c}{sin(86\°)}$

$c=\frac{11}{sin(57\°)}sin(86\°)$

$c=13.1\ units$

8 0

3 years ago

5(3 – x) + 1 = 3(x+4)

Yuri [45]

Step-by-step explanation:

<h3>✞︎Given</h3>

5(3-x)+1=3(x+4)

Solve Equation

<h3>✞︎Solution</h3>

$\tt\large\underline{15-5x+1=3x+12}$

$\large{✰} \bf \underline\color{purple}{16-5x=3x+12}$

$\tt\large\underline{\longmapsto16-12-3x+5x}$

$\tt\large\underline{\longmapsto4-8x}$

$\tt\large\underline{\longmapsto8x=4}$

$X=\longmapsto\sf \dfrac{\cancel{4}}{\cancel{8}}$

$\tt\large\underline{\longmapsto \: \: \: \: x = \frac{1}{2} }$

3 0

2 years ago

The sum of two numbers is 13. Two times the first number minus 3 times the second number is one. If your ex stand for the first

Sav [38]

Answer:x = 8, y = 5

Step-by-step explanation:The sum of two numbers is 13. Two times the first number minus three times the second numberis 1. If you let x stand for the first number and y for the second number, the two numbers are: A. x = 8, y = 5

6 0

3 years ago

Evaluate the function below for x = 4. F(x) = x3 + 2x2 + 1

pav-90 [236]

Answer:

Step-by-step explanation:

Plug in:

F(4) = (4)3 + 2(4)2 + 1

F(4) = 12 + (8)^2 + 1

F(4) = 12 + 64 + 1

F(4) = 77

(assuming 2x2 = 2x squared)

4 0

3 years ago

Is 85/95 greater than 64/76

madam [21]

85/95 is equal to 0.8947
64/76 is equal to 0.842
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3 years ago