please try to answer quickly my brainly app is crashing

John's driving at a speed of 40 miles per hour

Given that,

Dale and John leave their home traveling in different directions on a straight road. Dale drives 20 miles per hour faster than John. After 30 minutes they are 50 miles apart.

a. Define a variable for Dale's rate: x mph

Write an expression for John's rate: x-20 mph

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b. Write and solve an equation to find Dale rate. Then find John's rate.

They are separating at the rate of x + x-20 = 2x-20 mph.

-------

Equation:

time*speed = distance

0.5(2x-20) = 50 miles

x-10 = 50

x = 60 miles

x = 60

----

John's rate = x-20 = 40 mph

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Answer:

16x⁶+y⁶

Step-by-step explanation:

(4x^3+y^3) (4x^3+y^3)

= 16x^6+y^6

The equation that represents the line is y = -2x -3 which passes through the points (0, -3) and (1, -5).

A straight line is a combination of endless points joined on both sides of the point.

The slope 'm' of any straight line is given by:

[tex]\rm m =\dfrac{y_2-y_1}{x_2-x_1}[/tex]

From the graph:

The two points are:

(0, -3) and (1, -5)

The equation of the line:

y - (-5) = [-5 - (-3)]/[1] (x - 1)

y + 5 = -2(x - 1)

y = -2x -3

Thus, the equation that represents the line is y = -2x -3 which passes through the points (0, -3) and (1, -5).

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After the discount the net price is $7053.75 and the trade discount is 35.875% .

The term discount designates a sum or a percentage subtracted from an item's usual selling price.

The given marked price of the article is 11000

Price after first discount of 5% = 11000 - 5% of 11000 = 10450

Price after second discount of 10% = 10450 - 10% of 10450 = 9405

Price after third discount of 25% = 9405 - 25% of 9405 = 7053.75

Therefore the net price is 7053.75.

Therefore the trade discount is = ( 11000 - 7053.75 ) ÷ 11000 = 0.35875

Trade discount percentage = 35.875%

Hence after the discount the net price is $7053.75 and the trade discount is 35.875% .

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12 minutes .

The tank takes 12 minute for the water level to measure 9 inches deep.

Given tank measurement = 15 inches .

it decreases 0.5 inches every minute.

We have to the minute at which water level reaches 9 inches deep,

Here the difference of inches is 6 inches .

15 inches - 6 inches = 9 inches

To find minute ,

  6 / 0.5 = 12 minute .

The tank takes 12 minute to measure 9 inches deep.

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Answer: 3

Step-by-step explanation:

(−84) ÷ (−7) ÷ 4=

-84/(-7)/4=

(84/7)/4=

12/4=3

The initial fee that Jabari collects is $50.

It should be noted that Jabari is power washing houses for a summer job and for every job, he charges an initial fee plus a $30.

In this case, the amount collected was $170 for a four hours job. Let the initial fee be represented as x.

Therefore, this will be illustrated as:

x + (30 × 4) = 170

where x = initial fee

x + 120 = 170

Collect like terms

x = 170 - 120

x = 50

The initial fee is $50.

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Jabari is power washing houses for a summer job. For every job, he charges an initial fee plus a $30 sign, 30 for each hour of work. His total fee for a 4-hour job, for instance, is $170 sign, 170.

Jabari's total fee, f for a single job is a function of the number, t, of hours it takes him to complete the job. What is the initial fee?

The pearson's coefficient of skewness is found as the 1.065.

Pearson skewness:

The skewness of the a data set is calculated by subtracting the mean from the median and dividing by the standard deviation.

In this case:

The mean is 95, the median is 77, as well as the standard deviation is 16.9. So,

Pearson skewness = (95 - 77)/16.9

Pearson skewness = 1.065.

Thus, the pearson's coefficient of skewness is found as the 1.065.

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Answer:

$299

Step-by-step explanation:

[tex](\frac{207}{9} )(13)=\frac{2691}{9}}} =299[/tex]

Hope this helps

Answer:-2

Step-by-step explanation: Substitute the given y-value into 4x−3y=18 and solve for x

Answer:

r = - 8

Step-by-step explanation:

calculate the slope m using the slope formula , then equate to 3

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (- 5, r ) and (x₂, y₂ ) = (2, 13 )

m = [tex]\frac{13-r}{2-(-5)}[/tex] = [tex]\frac{13-r}{2+5}[/tex] = [tex]\frac{13-r}{7}[/tex]

then equating gives

[tex]\frac{13-r}{7}[/tex] = 3 ( multiply both sides by 7 )

13 - r = 21 ( subtract 13 from both sides )

- r = 8 ( multiply both sides by - 1 )

r = - 8

Answer:dsafdf

Step-by-step explanation's

Answer:

3.1

Step-by-step explanation:

Answer: 993

Step-by-step explanation:

I BELIEVE THE ANSWER IS 993 BUT I'M NOT SURE !

It could be 10,000 i don't know but i'm pretty sure it's 993 !

Hope it helped !

Answer:

[tex]3x + y = 3 \\ 3 = x - y \\ 3 = x[/tex]

Answer:

y = -3x - 4

Step-by-step explanation:

We are given the equation 3x + y = 3, and we want to find an equation of the line that is parallel to 3x + y = 3.

This same line also passes through the point (1, -7).

Parallel lines have the same slopes. This means that we'll first need to find the slope of 3x + y = 3.

The equation is written in standard form, which is ax+by=c, where a, b, and c are free integer coefficients, but a and b cannot be 0. a is usually non-negative as well.

There is a shortcut into finding the slope when the equation is in standard form; the slope of the line is -a/b, where a is the coefficient in front of x and b is the coefficient in front of y).

The coefficient in front of x is 3, and 1 in front of y.

Substitute 3 as a, and 1 as b in -a/b. Don't forget about the - in front of a!

-3/1 = -3

This means the slope of the line is -3.

It is also the slope of the line parallel to it.

We can write the equation of the line we are trying to solve for in standard form, too. However, we could also write it in slope-intercept form.

Slope-intercept form is given as y=mx+b, where m is the slope and b is the y intercept.

As we are already given the slope, we can immediately plug that into the formula.

Replace m with -3.

y = -3x + b

Now we need to find b.

As the equation passes through the point (1, -7), we can use its values to help solve for b.

Substitute 1 as x and -7 as y.

-7 = -3(1) + b

Multiply.

-7 = -3 + b

Add -3 to both sides

-4 = b

Substitute -4 as b into the equation

y = -3x - 4

Answer:

A is not equivalent

Step-by-step explanation:

A is .15 while all the others are .75 in some way

Answer:

0.15

Step-by-step explanation:trust me

The number of ways of different platters will be 360 ways.

From the information, it should be noted that the salad bar offers 6 different vegetables and it was illustrated that Selena wants to get exactly 2 different vegetables in the platter.

The number of different platters that she can create will be:

= nCr

n = total vegetables

r = amount needed

= 6! / 2!

= 6 × 5 × 4 × 3 × 2 / 2

= 360 ways.

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The Equation of perpendicular bisector line l is found to be [tex]y = 2x+ 11[/tex]

Given Line XY is formed by points  X(-9, -7) and Y(-3,5) therefore, it passes through these two respective points.

Let the slope of this line be n

The Slope of line passing through X and Y points is given by

n = [tex](y_{2} - y_{1} )/(x_{2} -x_{1} )[/tex]

⇒ n = {5 - (-7) }/ {(-3) - |(-9)}

⇒ n = 12/6

⇒ n = 2               (equation 1 )

Given that line l is perpendicular bisector of XY

Let the slope of l  = m

We know that the product of the slopes of any two perpendicular lines is -1

Therefore, n x m = -1

⇒ m = -1 \ n

putting the value of n from the above equation 1 we get

⇒ m = - 1/2

Additionally, because l is the perpendicular bisector hence it goes through the mid point of the line XY

Mid point of two lines = [tex](x_{2} + x_{1} )/2[/tex] and [tex](y_{2} + y_{1} )/2[/tex]

Mid point of XY = [tex]\frac{-9 + (-3)}{2}[/tex] and [tex]\frac{-7 + (5)}{2}[/tex]

                          = (-6, -1)

The equation of perpendicular bisector l is given my the following formula:

[tex]y = nx + c[/tex]

here we have n = slope of line

we have n = 2 from equation 1

∴ y = 2x + c (equation 2)

Also equation (2) is satisfied by the point (-6,-1)

Hence we can express it as:

-1 = 2(-6) + c

⇒ c = 11

Therefore the required equation of perpendicular bisector l is

[tex]y = 2x + 11[/tex]

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Answer:–

100g+79g–4g–69g+41g=–

53

Step-by-step explanation:

Answer:

So the answer would be

D

Step-by-step explanation:

Use the formula an=a1rn−1 to identify the geometric sequence an=81⋅2n−13n−1

I think this is right but I'm not 100% sure

I'm like 75% sure sorry

Step 1

Given;

Step 2

A) The equation of the graph will be;

At the interval [0,2]

B)

C)

D)

Answer;

Answer:

The robot walked 2 meters in 8 seconds. Time is seconds on the x-axis since it's an independent variable and distance in meters on the y-axis.

Check the picture below.

B) x=4

Explanation:

=> 3x-4=8

=> 3x=8+4

=> 3x=12

=>x=12/3

=> x=4

Answer:

both angles 1 and 2 measure 135°

Step-by-step explanation:

angle 1 = angle 2 = 135°

Hope this helps

Answer:

27^-1

Step-by-step explanation:

1/3 ×1/9=1/27=27^-1

Answer:

$189

Step-by-step explanation:

you would take 27 × 7 and multiply the two numbers, then get your answer.

Answer:

$12.25

Step-by-step explanation:

The unit rate would be[tex]\frac{21}{12}[/tex] 1.75 a can

7 x 1.75 = 12.25