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3 years ago

Plz help asap real quick i will put you as brainlist

Mathematics

2 answers:

kari74 [83]3 years ago

4 0

Answer:

21/8*2= 5 2/8 or 5 1/4

Divide fraction so keep change flip

make them improper

21/8 * 2

42/8

5 2/8

5 1/4

Step-by-step explanation:

i hope this help send some more if you want

professor190 [17]3 years ago

3 0

Answer:

21/8*2= 5 2/8 or 5 1/4

Step-by-step explanation:

Divide fraction so keep change flip

make them improper

21/8 * 2

42/8

5 2/8

5 1/4

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Flauer [41]

Answer:

Step-by-step explanation:

-3x + 4y = -18

8x - 4y = 28

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x = 2

4 - y = 7

-y = 3

y = -3

(2, -3)

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3 years ago

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What is 66% of $444? (Round to the nearest whole number)

mezya [45]

$444-66%= $150.96= $151

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2 years ago

there are 5 people at a party. each person must shake hands once with every other person at the party. how many handshakes does

Viefleur [7K]

Here's why:

Say the 5 people are A, B, C, D, E 

A shakes hands w/ B C D E 
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C with D E 
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3 years ago

Write each of the following expressions without using absolute value: |z−6|−|z−5|, if z<5

abruzzese [7]

Answer:

The answer is 1.

Step-by-step explanation:

Given the expression:

$|z-6|-|z-5|,\ if\ z$

To find:

The expression without absolute value.

Solution:

First of all, let us learn about the absolute value function:

$y = f(x) = |x| =\left \{ {{x\ if\ x>0} \atop {-x\ if\ x$

i.e. value is x if x is positive

value is -x if x is negative

Here the given expression contains two absolute value functions:

$|z-6|$ and $|z-5|$

Using the definition of absolute value function as per above definition.

$|z-5| =\left \{ {{(z-5)\ if\ z>5} \atop {-(z-5)\ if\ z$

$|z-6| =\left \{ {{(z-6)\ if\ z>6} \atop {-(z-6)\ if\ z$

Now, it is given that z < 5 that means z will also be lesser than 6 i.e. z < 6

So, given expression $|z-6|-|z-5|,\ if\ z$ will be equivalent to :

$-(z-6) - (-(z-5))\\\Rightarrow -z+6 +z-5 = \bold{1}$

So, the expression is equivalent to 1.

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3 years ago

Solve the system of equations. y=7x y=2x + 20 x=? y=?

alekssr [168]

X=4, y=28. 7x=2x+20, so subtract 2x from both sides and you’ll get 5x=20. Divide both sides by 5 and you’ll get x=4. Substitute this into the other equations and they will both equal 28.

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2 years ago