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3 years ago

Rewrite the statement (a×c)×c inverse=(b×c)×c inverse in additive notation

Mathematics

1 answer:

alukav5142 [94]3 years ago

8 0

Answer:

(a/c)/c=(b/c)/c

Step-by-step explanation:

Inverse means the opposite notation so you would switch the multiplication for division and I don't know what you mean by additive notation.

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To graph the line y = 3/2x + 7 *

Firdavs [7]

Answer:

Answer is C

Step-by-step explanation:

Hope it helps!

3 0

3 years ago

Suppose a certain drug test is 85% accurate, meaning that if a person is a user, the result is positive 85% of the time, and if

kakasveta [241]

Answer:

29.411 % of the result is true.

Step-by-step explanation:

This test's sensitivity is low.

Suppose we have 5 drug users and 85% of the test is accurate meaning that 5* 0.85= 4.25 people are drug users which is true.

But if work for the non users than 5% people being drug users means 95 people are non drug users out of the hundred.

And 85 % accuracy would give 95* 0.85= 80.75 which is very high.

And out of the 80.75 * 15%= 12.11 only 12 are positive .

The results give us 5 out of 17 true possibilities

or 5/17 *100= 29.411 % of the result is true.

8 0

3 years ago

Help on this one please

kvv77 [185]

Answer:

d ≈ 1732 ft

Step-by-step explanation:

Angle of elevation = Angle of depression

Following this truth,

m∠PAQ (Angle of depression) = m∠APB (Angle of elevation) = 30°

By applying tangent rule in the given triangle ABP,

tan(30°) = $\frac{AB}{PB}$

$\frac{1}{\sqrt{3}}=\frac{1000}{d}$

d = 1000√3

d = 1732.05

d ≈ 1732 ft

6 0

3 years ago

Solve for x.<br> -6x = -18

marta [7]

Answer:

Step-by-step explanation:

The goal is to get the x to be on one side of the equation on its own.

-6x = -18

To get rid of the -6, we would have to do the opposite of what it's doing in the equation - in this case, we would divide, as it's the opposite of multiplying.

What we do to one side of the equation, we have to do to the other.

-6x/-6 = x

-18/-6 = 3

x = 3

Hope that makes sense!

3 0

3 years ago

Read 2 more answers

Cynthia Besch wants to buy a rug for a room that is 1919 ft wide and 2727 ft long. She wants to leave a uniform strip of floor a

yulyashka [42]

Answer:

The dimension of the rug would be 17 ft × 9 ft.

Step-by-step explanation:

Given

length of the room = 27 ft.

width of the room = 19 ft.

suppose, she leaves a uniform strip of x ft. around the rug.

So,

The length of rug = (27-2x)ft.

Width of rug= (19-2x)ft.

∴ Area of the rug= length×width

$= (27-2x)(19-2x)$

$= 513-54x-38x+4x^2$

$= 513-92x+4x^2$

According to the question,

$513-92x+4x^2=153$

$513-92x+4x^2-153=0$ ( subtract 153 both sides)

$4x^2-92x+360=0$

$4(x^2-23x+90)=0$

$x^2-23x+90=0$

$x^2-(18+5)x+90=0$ ( Middle term splitting)

$x^2-18x-5x+90=0$

$x(x-18)-5(x-18)=0$

$(x-5)(x-18)=0$

$x-5=0$ or $x-18=0$ ( zero product property)

$x=5$ or $x=18$

if x=18, dimension would be negative ( Not possible)

Thus, x= 5

Hence,

length of rug= 27-10=17 ft.

width of rug= 19-10=9 ft.

8 0

3 years ago

Rewrite the statement (a×c)×c inverse=(b×c)×c inverse in additive notation​

Rewrite the statement (a×c)×c inverse=(b×c)×c inverse in additive notation