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Dahasolnce [82]
3 years ago
13

Solve for y. 8y-3y=40

Mathematics
2 answers:
kifflom [539]3 years ago
8 0

Answer:

8y-3y=5y

5y=40

divide both sides by 5 so y could be alone

y=40/5

y=8

I hope this helps can I have brainliest please, I really need it

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Airida [17]3 years ago
5 0

Answer:

8

Step-by-step explanation:

8y-3y=40

5y. = 40

y. =8

the value of y is 8.

...

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A value increased by 5 then split the results three ways
Vladimir [108]

Answer:

(x+5)/3

Step-by-step explanation:

Our value, x, is being increased by 5, so we just add 5. Then it is split 3 ways, so we just divide x+5 by 3 to get (x+5)/3

Hope this helps

3 0
3 years ago
HELP ME!!
mihalych1998 [28]

Answer:

cos2∅= -0.557

tan2∅= --1.49

Step-by-step explanation:

Given:

cos∅=-8/17

By trigonometric ratios:

as cos∅=adjacent/hypotenuse

hypotenuse= 17

adjacent=-8

Now finding perpendicular using Pythagoras theorem:

c2=a2+b2

17^2=(-8)^2+b^2

289-64=b^2

b^2=225

b=±15

b=-15 as ∅ is in third quadrant so both the opposite and adjacent sides be in 3rd quadrant

tan∅=opposite/adjacent

tan∅=-15/-8

sin∅=-15/17

Now finding cos2∅

cos2∅= 1-2sin^2∅

           =1 - 2(-15/17)^2

           =1 -450/289

            = -161/289

           =-0.557

finding tan2∅

tan2∅= 2tan∅/1-tan^2∅

         = 2(-15/-8) / 1-(-15/-8)^2

          = (15/4) / 1-225/64

           =(15/4) / (-161/64)

            = -240/161

             =-1.49 !

6 0
3 years ago
I don’t know if these are right can someone check them for me pls and I need help on the bottom 2
Ilia_Sergeevich [38]
They are right might have to take a few sec
3 0
3 years ago
Write the equation of the line that passes through (-6,0) and is parallel to the line y=5x-43
AVprozaik [17]

The equation of the line that passes through (-6,0) and is parallel to the line y = 5x - 43 in slope intercept is y = 5x + 30

<em><u>Solution:</u></em>

Given that line that passes through (-6, 0) and is parallel to the line y = 5x - 43

We have to find the equation of line

Let us first find slope of line having equation y = 5x - 43

<em><u>The slope intercept form of line is given as:</u></em>

y = mx + c  ------- eqn 1

Where "m" is the slope of line and "c" is the y - intercept

On comparing equation of line y = 5x - 43 with slope intercept form y = mx + c,

we get m = 5

Thus slope of given line is 5

We know that slopes of parallel lines are equal

Thus the slope of line parallel to given line is also 5

Now let us find equation of line having slope "5" and passes through (-6, 0)

Substitute m = 5 and (x, y) = (-6, 0) in eqn 1

y = mx + c

0 = 5(-6) + c

<h3>c = 30</h3>

<em><u>Thus the required equation is:</u></em>

Substitute c = 30 and m = 5 in eqn 1

y = 5x + 30

Thus the required equation of line is found

8 0
3 years ago
An expression is shown. (3x^2+2x-5) -(5x^2-4x+1)
Readme [11.4K]

Step-by-step explanation:

solve the equation by placing correct sign

5 0
3 years ago
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