How do you know to add for the first one and multiply for the second??

Answer:

rate boat = 15 mph

rate current = 5 mph

explanation:

d = r * t

t = d/r

240 / (r_boat + current) = 12       Multiply both sides by r_boat + r_current.

240 = 12(r_boat + current)

240/ (r_boat - current) = 24       Multiply both sides by r_boat - r_current

240 = 24*(r_boat - current)    

Since the distances are the same in both equations, you can equate the right side of each.

12 (r_boat + current) = 24(r_boat - current)     Divide by 12

r_boat + current  = 2 (r_boat - current)             Remove the brackets.

r_boat  + current = 2*r_boat - 2* current          add 2 currents to both sides

r_boat  + 3currents = 2*r_boat                          Subtract r_boat both sides

3 currents = r_boat.

240 = 12*(r_boat + current.                               Divide by 12

20 = r_boat + current                                        Put 3 currents in for r_boat

20 = 3currents + 1 current                                Combine

20 = 4 currents                                                  Divide by 4

5 = current

The rate of the current = 5 miles / hour

3 currents = r_boat

3*5 = rate_boat

15 = rate of the boat

Answer:

0

Step-by-step explanation:

slope= y2-y1/x2-x1 = 9-9/3-5=0/-2 =0

Answer:

a) It is clear that point A is located at x = -2, and y = -1, therefore, the coordinates of point A are: A(-2, -1)

b) We can plot the point B (-2, 4) on the grid at x = -2 and y = 4.

Please check the attached graph.

c) The coordinates of the midpoint of AB:  [tex]\left(-2,\:\frac{3}{2}\right)[/tex]        

Step-by-step explanation:

Part a)

Important Tip:

It is clear that point A is located at x = -2, and y = -1, therefore, the coordinates of point A are:

Part b)

We can plot the point B (-2, 4) on the grid at x = -2 and y = 4.

Please check the attached graph.

Part c)

We can determine the coordinates of the midpoint of AB using the formula

[tex]M.P_{AB}=\left(\frac{x_2+x_1}{2},\:\:\frac{y_2+y_1}{2}\right)[/tex]

In our case, we have:

A(x₁, y₁) = A(-2, -1)

B(x₂, y₂) = B (-2, 4)

so substituting [tex]\left(x_1,\:y_1\right)=\left(-2,\:-1\right),\:\left(x_2,\:y_2\right)=\left(-2,\:4\right)[/tex] in the formula

[tex]M.P_{AB}=\left(\frac{x_2+x_1}{2},\:\:\frac{y_2+y_1}{2}\right)[/tex]

            [tex]=\left(\frac{-2-2}{2},\:\frac{4-2}{2}\right)[/tex]

Refine

            [tex]=\left(-2,\:\frac{3}{2}\right)[/tex]

Therefore, the coordinates of the midpoint of AB:  [tex]\left(-2,\:\frac{3}{2}\right)[/tex]          

Answer:

y = -2x + 3.

Step-by-step explanation:

The slope = (11-3)/(-4-0)

= 8/-4

= -2.

Using the point-slope form of a straight line:

y - y1 = m(x - x1)

Here m = -2 and (x1, y1) = (0,3). then

y - 3 = -2(x - 0)

y - 3 = -2x

y = -2x + 3.

Answer:

BDE

or

EDB

Step-by-step explanation:

Make the marked angle, D, your center point. Find the two other points of the angle, E and B. write them in order, forwards and backwards.

Answer:

3n^2 (9+25n)

Step-by-step explanation:

[tex]\tt{}27n^{5} + 75 {n}^{3} [/tex]

[tex]\tt{} {3n}^{2} \times (9 {n}^{2} + 25)[/tex]

Answer:

x = 3, y = 1

Step-by-step explanation:

By substitution since y = -2x + 7, substitute that for the 2nd y so

-2x +7 = 3x - 8, so x = 3, then substitute the 3 in any of the equations, so y = -2(3) + 7 is equal to 1

If you use elimination you can subtract the two equations from each other to get rid of the y so

y = -2x + 7

-y = -3x + 8

so 0 = -5x + 15, 5x = 15, x=3

Answer:

cevap =560...........

Answer:

Step-by-step explanation:

The consecutive even integers are (2n-2), (2n), and (2n+2), where n is an integer.

(2n-2) + (2n+2) = 36

4n = 36

n = 9

(2n-2) = 16

(2n) = 18

(2n+2) = 20

Answer:

100 inches

Step-by-step explanation:

15/6=2.5

40*2.5=100 inches

Answer:

$31..92 is the original price

Step-by-step explanation:

Answer:

x= -10

Step-by-step explanation:

................

Answer:

3/2, one solution.

Step-by-step explanation:

12(x-3)+18=4(2x-3)

12x-36+18=8x-12

12x-8x-18=-12

4x-18=-12

4x=-12+18

4x=6

x=6/4

simplify

x=3/2

Answer:

2.5

20 divided by 8 equals to 2.5

Answer:

1 foot = 12 inches

Step-by-step explanation:

Answer:

it's sideways please turn it so i can read it and help.

Step-by-step explanation:

Answer:

y = (10 * 0.2) ^ x

Y = (2)^x

Y =  2^x + 10

6.5 hours

Step-by-step explanation:

Y is the number of people at the school who have been infected with the flu. The 10 is the initial number of infected students which is a constant so it does not change. The 0.2 is the rate of increase, or 20%. The x exponent is the number of hours so that is a changing number. Your answer is 2 to the power of the number of hours which is x. Add ten after that to get your number. to get 100 people ill, it would take about 6.5 hours.

Answer:

C. The conditional statement is false. There is at least one counterexample for the statement.  

Step-by-step explanation:

took the quiz

Mark as Branliest if you like the answer and want to be ansewered frequently within no time

Answer:

[tex]11 \: devided \: by \: 108 = \frac{11}{108} = \boxed{0.1018518519} \\while \to \\ 108 \: devided \: by \: 11= \frac{108}{11} = \boxed{9.8181818182} \\ [/tex]

Answer: 11 divided by 108 = 0.10185185185

108 divided by 11 = 9.81818181818

Step-by-step explanation:

Answer:

[tex]144[/tex] cubic units

Step-by-step explanation:

We can assume that the truck is a rectangular prism since we're given its length, width, and height. To find the volume of a rectangular prism, simply multiply its length, width, and height together. As an algebraic expression, this would be [tex]l*w*h[/tex], where [tex]l[/tex], [tex]w[/tex], and [tex]h[/tex] are the prism's length, width, and height, respectively.

In this case, we are given that [tex]l=6[/tex], [tex]w=4[/tex], and [tex]h=6[/tex]. Therefore, the volume of the milk truck is [tex]6*4*6=144[/tex] cubic units. Hope this helps!

Answer: 144 feet³

Step-by-step explanation: To find the volume, mutiply the Length, Width, and Height. Or we can use the formula.

Rectangular Tank Volume Formula: L x W x H

As we see, 6 is the Length. 4 is the Width and 6 is the Height.

So, we can multiply the Length, Width, and Height to get the volume.

6 x 4 x 6 = 144 feet³

Therefore, the answer is 144 feet³

Answer:

A

Step-by-step explanation:

Add all the numbers, divide the number of seniors by the total, thats the answer.

Answer:

Step-by-step explanation:

Answer:

1. Similar 6:1

2. Not Similar

3. Similar 6:5

Step-by-step explanation:

Okay

Step-by-step explanation:

<HAM+<HAJ=180 LINEAR PAIR

<HAM=180-<HAJ=180-42=138IS YOURANSWER

Answer:

138°

Step-by-step explanation:

∠JAM = 180°

∠JAH = 42°

∠JAH + ∠HAM = 180° because they are supplementary

42° + ∠HAM = 180°

∠HAM = 180°-42°

∠HAM = 138°

Answer: 9.055

Step-by-step explanation:

The number between 9.05 and 9.06 will be 9.055.

A numeral system is a way of writing numbers; it's a way of mathematically notating a collection of numbers by utilizing a consistent set of digits or other symbols. In several numeral systems, the same set of symbols may represent various numbers.

Given numbers are 9.05 and 9.06. The number between 9.05 and 9.06 will be 9.055.

The number is also plotted on the number line between the numbers 9.05 and 9.06. The number line graph is attached with the answer below.

Therefore, the number between 9.05 and 9.06 will be 9.055.

To know more about the number system follow

https://brainly.com/question/24644930

#SPJ2

Step-by-step explanation:

Question 1 (answer is C)

6 4

5 2

y=mx+b

4= 6m+b

2=5m +b

by subtracting the two equations

m= 2

4= 6(2)+b

b= 4-12

b= -8

y= 2x- 8

then the answer is C

Question 2

the answer is C

the answer is Cbecause the linear function has a power of (1)

Question 3(B)

m= -2

3 5

y=mx+b

5= 3(-2)+b

5= -6+b

b= 5+6

b= 11

y= -2x +11

the answer is (B)

Answer:

Step-by-step explanation:

THERE ARE 147 STRAWBERRIES.

THE RATIO OF RASBERRIES TO STRAWBERRIES ARE 1:7

THEN,

THE AMOUNT OF RASBERRIES ARE 1/7 TIMES OF THE STRAWBERRIES.

SO,THERE ARE (147×1/7) or,21 RASBERRIES.

SO THE ANSWER IS: THERE ARE 21 RASBERRIES...

Answer:

The correct option is a.

Step-by-step explanation:

It is given that Nell's mortgage is $50,150 at 10 percent for 30 years and she must pay $8.78 points per $1,000.

EMI on $1000 is $8.78, so EMI on $1 is

EMI on $1 = 8.78/1000 = 0.00878

EMI on $50150 is

EMI on $50150 = 0.00878 x 50150 = 440.317 = 440.32

Therefore the correct option is a.

Hope this help you! ^_^

Answer:

15,19,20,29,36

N=5

Median =n+1/2

=6/2

=3

Terfore 3rd absorbation is meadian

:. 20 is the answer