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Nutka1998 [239]

3 years ago

9

Write two properties of 1

2 answers:

valentinak56 [21]3 years ago

5 0

Any number multiplied by 1 stays the same.
1 is called the multiplicative identity .

SIZIF [17.4K]3 years ago

4 0

The identity property of 1 says that any number multiplied by 1 keeps its identity. In other words, any number multiplied by 1 stays the same. The reason the number stays the same is because multiplying by 1 means we have 1 copy of the number. For example, 32x1=32.

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Please help I don't understand!

levacccp [35]

Answer:

9

Step-by-step explanation:

Take the sides in proportion.

⇒ $\frac{AE}{AD} =\frac{AB}{AC}$

⇒ $\frac{12}{12+8} =\frac{x}{15}$

⇒ $\frac{12}{20} =\frac{x}{15}$

⇒ $\frac{3}{5} =\frac{x}{15}$

⇒ $3 = \frac{x}{3}$

⇒ x = 3 × 3

⇒ x = 9

3 0

2 years ago

Given equations A and B as 2/5x+y=12 and 5/2y-x=6 respectively which expression will eliminate the variable X a) 5/2A+2/5B b)5/2

frutty [35]

Answer:

C) $A+\frac{2}{5}B$

Step-by-step explanation:

Given Equations:

A) $\frac{2}{5}x+y=12$

B) $\frac{5}{2}y-x=6$

In order to eliminate $x$ we need to multiply $\frac{2}{5}$ to equation B and add it to A.

Multiplying $\frac{2}{5}$ to B.

⇒ $\frac{2}{5}\times (\frac{5}{2}y-x)=\frac{2}{5}\times 6$

⇒ $(\frac{2}{5}\times\frac{5}{2}y)-(\frac{2}{5}x)=\frac{12}{5}$

⇒ $y-\frac{2}{5}x=\frac{12}{5}$

Adding it equation A.

$\frac{2}{5}x+y=12$

+ $-\frac{2}{5}x+y=\frac{12}{5}$

We get $2y=\frac{72}{5}$

Thus $x$ is eliminated.

So, the expression used to eliminate $x$ is:

$A+\frac{2}{5}B$

4 0

3 years ago

How many minutes are equal to 2 hours 20 minutes

ivann1987 [24]

Answer:

140

Step-by-step explanation:

tell me if I'm wrong

60+60+20=140

4 0

3 years ago

What values for x will make the inequality true? 28 - x > 7 (x - 4)

Anna11 [10]

Answer:

x<7

Step-by-step explanation:

⇒ $28-x>7(x-4)$

⇒ $28-x>7x-28$

⇒ $56>8x$

⇒ $7>x$

⇒ $x$

6 0

3 years ago

Help me, please math

konstantin123 [22]

Turn to God today he is our lord and savior

5 0

3 years ago

Read 2 more answers