if f(x)=8x+3 what is the value of x when f(x) =19

Answer:

20

Step-by-step explanation:

-3x+20=-5x+20+2x

reduced:

-3x+20=-3x+20

subtract 20 from each side

Then

-3x=-3x

Answer:

y=-9/5x-2/5

Step-by-step explanation:

Answer:

y=-9/5x-2/5

Step-by-step explanation:

Slope=m=Rise/Run=(y2-y1)/(x2-x1)=(-4-5)/(2-(-3))=(-9)/(5)=-9/5

So the equation becomes y=-9/5x+b

Plug in one of the given points:

y=-9/5x+b

-4=-9/5(2)+b

-4=-18/5+b

-0.4=b

b=-0.4

Therefore the equation of the line is y=-9/5x-2/5

To find the equation of the line, we need to figure out the slope and y-intercept.

To find the y-intercept, look at the number where the line intersects the y-axis. The number is 5. The equation so far is y = ?x + 5.

We still didn't figure out the slope yet. To figure out the slope, pick two points. Use the rise over run method. It is in the image below. The line is going up to the left, so the slope will be negative. Now we know the slope is -1/3. The equation now that we figured out the slope is y = -1/3x + 5.

I hope this helps you! Let me know if I got something wrong.

Answer:

9 3/8

Step-by-step explanation:

or 75/8

Answer:

I think its 15/4

Step-by-step explanation:

:)

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Work Shown:

Plug in t = 2 and we get the following

[tex]a = 500*\left(\frac{3}{4}\right)^{t}\\\\a = 500*\left(\frac{3}{4}\right)^{2}\\\\a = 500*\left(0.75\right)^{2}\\\\a = 500*0.5625\\\\a = 281.25\\\\[/tex]

The answer is choice D. There are 281.25 mg of aspirin in the bloodstream after 2 hours.

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Side notes:

Answer:

375

Step-by-step explanation:

because if you look at the question 3\4 is 1 hour with the aspren 500 after 2 hours you 2 the ammount i think

Answer:

We conclude that:

[tex]\left(6g^2\:\right)\times \left(-2g^3\right)=-12g^5[/tex]            

Step-by-step explanation:

Given

The product of 6g² and -2g³ can be determined by multiplying each other such as:

[tex](6g^2\:)\times \:(-2g^3)[/tex]

Apply the rule:  a(-b) = -ab

[tex]\left(6g^2\:\right)\times \left(-2g^3\right)=-6g^2\times \:\:2g^3[/tex]

Apply exponent rule:   [tex]a^b\times \:a^c=a^{b+c}[/tex]

                          [tex]=-6g^{2+3}\times \:2[/tex]

                          [tex]=-6g^5\times \:2[/tex]

                          [tex]=-12g^5[/tex]

Therefore, we conclude that:

[tex]\left(6g^2\:\right)\times \left(-2g^3\right)=-12g^5[/tex]            

Answer:

4x+2y=20

Step-by-step explanation:

x=apples ($4/lb)

y=pears ($2/lb)

Answer:

What Did the Blind Man Say after Being Handed a Cheese Grater?

"That's the most violent book I've ever read."

Step-by-step explanation:

Answer: I could but it will be a little cheesy

Step-by-step explanation:

The above question was not properly written.

Complete Question

Given quadrilateral EFGH with vertices at E(-4,8), F(8,4), G(5,-5) and H(-7,-1), prove using coordinate geometry that EFGH is a rectangle.

Answer:

Quadrilateral EFGH is a rectangle.l because:

EF = GH and FG = EH

Step-by-step explanation:

The formula for coordinate geometry is given as :

√(x2 - x1)² + (y2 - y1)² when we have coordinates: (x1, y1) and (x2 , y2)

For the quadrilateral EFGH with given coordinates above to be a rectangle,

EF = GH

FG = EH

Hence:

For side EF

E(-4,8), F(8,4)

= √(8 - (-4))² + (4 - 8)²

= √12² + -4²

= √144 + 16

= √160 units

For side FG

F(8,4), G(5,-5)

=√(5 - 8)² + (-5 - 4)²

= √-3² + -9²

= √9 + 81

= √90 units

For Side GH

G(5,-5) , H(-7,-1)

= √(-7 - 5)² + (-1 - (-5))²

= √-12² + 4²

= √144 + 16

= √160 units

For side EH

E(-4,8), H(-7,-1)

= √(-7 -(-4))² +(-1 - 8)²

= √-3² + -9²

= √9 + 81

= √90 units

From the above calculation, we can see that truly,

EF = GH

FG = EH

Therefore, quadrilateral EFGH is a rectangle.

Answer:

1350

Step-by-step explanation:

x - intercept is (-4,0)

Answer:

x- intercept = - 4

Step-by-step explanation:

The x- intercept is the value of x on the x- axis where the line crosses.

The line crosses the x- axis at x = - 4, which is the x- intercept

Answer:

12.99/100 X 108.5 = 14.09

39.99/100 X 108.5 = 43.39

43.39 - 14.09 = 29.3

difference = $29.30

Answer:

ok so I'm English not a hundred percent sure on your break down of money......so if I'm right in thinking that a nickel = 5 cents, dime = 10cents and a quarter =25cents

you add the amounts together

so 25 + 30 +20 = 75 cents.

there are 100 cents in a dollar so 100/100 X 75=75%

I have no idea how you got to 44%

Answer:

the answer is A

Step-by-step explanation:

Answer:A>

Step-by-step explanation:

Answer:

1.

1/10 chance

2.

2/10 chance

3.

2/10 chance

4.

0/12 chance or maybe 0/10

Step-by-step explanation:

1.1/5 chance for the number and 1/2 chance for the heads/tails so

2.2/5 chance of getting it to land on an even number + 1/2 for heads

3..2/5 chance of getting it to land on an even number and  1/2 for tails

4.you cant land a 6

Answer:

a. The average is  =(++) .

b. He can use the formula  =−− q sub 3 , equals 3 x minus , q sub 1 , minus , q sub 2. He will need a score of  =()−−= q sub 3 , equals 3 open 90 close minus 85 minus 88 equals 97 on his third quiz.

Step-by-step explanation:

Answer:

Equation- p-6= -14

Answer- p=-8

Step-by-step explanation:

Answer:

y=-3/2x+6

Step-by-step explanation:

You will need to find the equation of the line in slope-intercept form y=mx+b.

First, find the slope m using slope formula m = (y_2-y_1)/(x_2-x_1) which is m=(6-(-6))/(0-8)=-12/8=-3/2

Now that you found the slope, your equation intercept form looks like y=-3/2 x+b.

Both points (8, -6) and (0.6) belong to this line, therefore both points coordinates satisfy line above which means: 6=-3/2(0)+b (i used second point here)

Solving for b we will get y intercept which is b=6

Finally, the line that passes through points (8,-6) and (0,6) has equation: y=-3/2 x + 6

The rate of money earned per day will be $75 per day.

The rate of change is the change of a quantity over 1 unit of another quantity.

Most of the time the rate of change is the change with respect to time.

For example the speed 3meter/second.

As per the given,

Elena made $1,350 in 18 days.

Earning per day = ($1350/18) = $75 per day.

Hence "The rate of money earned per day will be $75 per day".

To learn more about the rate of change here,

brainly.com/question/12786410

#SPJ2

Answer:

B) There is a correlation between start time and amount of tea consumed. There may or may not be causation. Further studies would have to be done  to determine this.

Step-by-step explanation:

Correlation in terms of statistics refers to the relationship that exists between two components. The extent to which the two components or data are related to each other is highlighted with correlation. The change in one component brings the same amount of change in the other component. Correlation discloses the way the variables are related.  

In the given excerpt, the correlation between start time and amount of tea consumed has been highlighted. This data is required for further research about the cause.

Answer:

x+6

Step-by-step explanation:

5x-3(x-2)-x

5x-3x+6-x

combine like terms

x+6

Answer:

For simple interest: $50, for compound interest: $56.25

Step-by-step explanation:

Year 1) 100+100(.25) = 125

Year 2) 125+125(.25) = 125+31.25 = $156.25

156.25 - 100 = $56.25

25 x 2

=50

Answer:

Step-by-step explanation:

Find the nth term so the sequence is going up by 0.42

0.42*63=26.46

63rd term=26.46

Answer:

m=0 y=4

Step-by-step explanation:

Answer:A

Step-by-step explanation:

runs away cutely

Answer:

C. Unit Fractions

Step-b