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GenaCL600 [577]
3 years ago
5

Solve -5w = -80 for w.

Mathematics
2 answers:
Brrunno [24]3 years ago
7 0

Answer:  The correct answer is:  " 16 " .

__________________________________________________

     →   " w = 16 "  .

__________________________________________________

Step-by-step explanation:

__________________________________________________

Given:

 -5w = -80 ;   Solve for "w" ;.

Divide each side of the equation by:  " - 5 " ;  

  to isolate "w"  on one side of the equation;

   & to solve for "w" ;

- 5w / -5 = -80 / -5 ;

to get:

    w = 16 .

___________________________________________________

Hope this helps!  

  Wishing you the best!

___________________________________________________

Brums [2.3K]3 years ago
5 0

Answer:

Hello there!

Your answer is 16

Step-by-step explanation:

see attached photo.

Hope this helps! Have a great day!!!

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What is the equation of a line that its parallel to -3x+4y=4 and passes through the point (4,0)?
anzhelika [568]

Answer:

y=3/4x-3

Step-by-step explanation:

Okay so to be parallel to an equation of another line, the line must have the same slope but a different y-intercept. First, you need to find the slope of the equation -3x+4y=4. The equation must be in y=mx+b format, so you first move -3x to the right by adding it on both sides, leaving you with 4y=3x+4. Next, you divide 4y by 4 in order to isolate y and do that on the other side. Now, you have y=3/4x+1.

To find the equation of the new line, you must put the point and slope into point slope form: y-y1=m(x-x1). In the point (4, 0), 4 would be x1 and 0 would be y1. so, the new equation is y-0=3/4 (x-4). now, distrubute the 3/4, leaving you with y=3/4x-3. This is correct since the slope remains the same in both equations with a different y-intercept. To check deeper, you could place point (4, 0) on a graph and then rise 3, run 4 until you get the line :) hope this helps

7 0
3 years ago
Which is the equation of a line that is perpendicular to the line represented represented by y = 3/4x - 1/2 ?
expeople1 [14]
It will be
.. y = -4/3x +c . . . . . for some value of c

_____
The slope of the perpendicular line will be the negative reciprocal of the slope of the given line, which is 3/4.
6 0
3 years ago
Read 2 more answers
How many window coverings are necessary to span 50 windows if each window covering is 15 windows long?
julia-pushkina [17]
<span><u><em>The correct answer is: </em></u>
4.

<u><em>Explanation</em></u><span><u><em>: </em></u>
To find this answer, we divide the number of windows, 50, by the length (in windows covered) of each covering, 15:
</span></span>\frac{50}{15} = 3 \frac{1}{3}<span><span>.
This means that 3 coverings won't quite be long enough, so we will need 4. </span></span>
4 0
3 years ago
Am I correct on question #6?
pashok25 [27]

Option A:

\tan(105^\circ)=-(2+\sqrt{3})

Solution:

<u>To evaluate tan(105)°:</u>

105° can be written as sum of 60° and 45°.

tan(105)° = tan(45 + 60)°

Using the summation identity:

$\tan (x+y)=\frac{\tan (x)+\tan (y)}{1-\tan (x) \tan (y)}

$\tan \left(105^{\circ}\right)=\frac{\tan \left(45^{\circ}\right)+\tan \left(60^{\circ}\right)}{1-\tan \left(45^{\circ}\right) \tan \left(60^{\circ}\right)}

We know that, tan(45)° = 1 and tan(60)° = √3

Substitute this in the above equation.

              $=\frac{1+\sqrt{3}}{1-1 \cdot \sqrt{3}}

              $=\frac{1+\sqrt{3}}{1-\sqrt{3}}

To rationalize the denominator multiply by the conjugate \frac{1+\sqrt{3}}{1+\sqrt{3}}.

              $=\frac{(1+\sqrt{3})(1+\sqrt{3})}{(1-\sqrt{3})(1+\sqrt{3})}

Using exponent formula: a^{b} \cdot a^{c}=a^{b+c} and (x-y)(x+y)=x^2-y^2

              $=\frac{(1+\sqrt{3})^2}{(1^2-(\sqrt{3})^2)}

Using exponent formula: (a+b)^{2}=a^{2}+2 a b+b^{2}

              $=\frac{1^{2}+2 \cdot 1 \cdot \sqrt{3}+(\sqrt{3})^{2}}{1-3}

              $=\frac{4+2 \sqrt{3}}{-2}

              $=\frac{2(2+ \sqrt{3})}{-2}

              =-(2+\sqrt{3})

\tan(105^\circ)=-(2+\sqrt{3})

Hence option A is the correct answer.

6 0
4 years ago
Slope is 2 and<br> y-intercept is (0,3).<br> Y= what
Daniel [21]
Y would be 3 then.
Beacuse the equation is y=Mx+c
So if you substitute the values it will be
y=2(0)+3
Y=0+3
Y=3
5 0
3 years ago
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