2 years ago

15 points please help

Mathematics

1 answer:

Molodets [167]2 years ago

7 0

The answer is x= -21

3x-3=6(x-10)

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Karen has 9 feet of lace for her tablecloth. She used 3 feet of lace.

RideAnS [48]

First calculate th feet of lace she haven't used.
9 - 3 = 6 ft
now we can convert feet into yard. we can divide the amount into 3 because it says 3ft is 1yrd
6 / 3 = 2 yards

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2 years ago

Can someone walk me through this?

shepuryov [24]

I hope this helps you

Ax+By=C

By=C-Ax

y=C/B-A/Bx

m= -A/B

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3 years ago

Which category do all of these shapes belong to

Nataly [62]

Answer:

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Step-by-step explanation:

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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 <em>1</em>.

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 <em>1</em>.

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3 years ago

One of the legs of a right triangle measures 2 cm and its hypotenuse measures 18 cm.

denpristay [2]

Answer:

17.9

Step-by-step explanation:

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2 years ago