t= k/k-2

Make k the subject of the formula

(i know the answer is k=2t/t-1 but i want to understand how)

Answer:

$99.5

Step-by-step explanation:

Add up all the dollar amounts and subtract 30%

Answer:

Subtotal: $122     Total: $36.60

Step-by-step explanation:

Since you're only looking for the subtotal and not the actually total, you just have to add $15.00 + $32.00 + $75.00 and you should get $122. Although if you were looking for the total then you would have to know what 30% of 122 is and you should get 36.60 as the result so it would cost $36.60

Hope this helps you :D

Answer:

Hey there,

The answer is below!!

Step-by-step explanation:

Knowing that those vectors start at the point (0,0) we can "think" them as lines.

As you may know, two lines are parallel if the slope is the same, then we can find the "slope" of the vectors and see if it is the same.

A) the vectors are: (√3, 1) and (-√3, -1)

You may remember that the way to find the slope of a line that passes through the points (x1, y1) and (x2, y2) is s = (y2 - y1)/(x2 - x1)

Because we know that our vectors also pass through the point (0,0)

then the slopes are:

(√3, 1) -----> s = (1/√3)

(-√3, -1)----> s = (-1/-√3) =  (1/√3)

The slope is the same, so the vectors are parallel.

Part B:

The vectors are: (2, 3) and (-3, -2)

the slopes are:

(2, 3) -----> s = 3/2

(-3, -2)----> s = -2/-3 = 2/3

the slopes are different, so the vectors are not parallel.

Answer:

The 3rd from the choices is correct.

Answer:

9.3 units

Step-by-step explanation:

By Pythagoras Theorem:

[tex] {x}^{2} + {(18 - 5)}^{2} = {16}^{2} \\ \\ {x}^{2} + {13}^{2} = {16}^{2} \\ \\ {x}^{2} + 169 = 256 \\ \\ {x}^{2} = 256 - 169 \\ \\ {x}^{2} = 87 \\ \\ x = \sqrt{87} \\ \\ x = 9.32737905 \\ \\ x \approx9.3[/tex]

Answer:

yes, no, no, yes, no

Step-by-step explanation:

10:40 divide by 10 you get 1:4.  Correct

3:7 multiply by 3 and you get 9:21.  Incorrect

12:9 divide by 3 and you get 4:3.  Incorrect

25:15 divide by 5 and you get 5:3.  Correct

8:9 multiply by 2 and you get 16:18.  Incorrect

Answer:

B) 16°

is right answer

I hope it's helps you

Answer:

1. 1,384.74 cm^2

2. 50.24 ft^2

3. 10pi

Step-by-step explanation:

Just use circumference equation of Circumference= 2 pi R

and Area = pi R^2

Answer:

it's B, 40%.

Step-by-step explanation:

Answer:

40%

Step-by-step explanation:

Edge2021

Answer:

75cm

Step-by-step explanation:

Well, I can't see a photo, so I'll have to assume that the description provides enough info.

10cm/2km = x/15km,

where x is the distance on the map (in centimeters) of a real-life distance of 15 kilometers.

10cm/2km = x/15km

10/2 = 5/1

This means we have to multiply 5 by 15 to find x.

x = 5 · 15

x = 75

Let's plug the new value back in...

10cm/2km = x/15km

10cm/2km = (75cm)/15km

(Simplify each side to its simplest form)

10cm/2km = 75cm/15km

5/1 = 5/1

It works! So x = 75cm.

Hope this helps! :)

Answer:

The slope is -2.

Step-by-step explanation:

1) The equation for a slope is [tex]\frac{y_2-y_1}{x_2-x_1}[/tex].

2) Plug in x and y values into the equation. I plugged in (3,0) and (8,-10) into the equation.

3) You end up with: [tex]\frac{-10 -0}{8-3}[/tex], which simplifies down to [tex]\frac{-10}{5}[/tex], which equals -2.

Hope this helps! Feel free to give me Brainliest if you feel this helped. Have a good day, and good luck on your assignment. :)

Answer:

the slope is -2.

Step-by-step explanation:

plot the points on a graph, then draw a line through them. count the rise/run, which equals the slope.

Answer:

C

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just don’t want to waste my time in case you don’t want me to :)

Answer:

a) 12 minutes

b) 5 tasks

Step-by-step explanation:

Answer: y=−x−5

Step-by-step explanation: -4+-4

Answer:

15 degrees

Step-by-step explanation:

So you know that the sum of the two angles is 90 degrees, so you can make an equation:

[tex]3x + 45 =90[/tex]

Then, solve:

subtract 45 from both sides

[tex]3x = 45[/tex]

divide both sides by 3

[tex]x = 15[/tex]

This means that x = 15 degrees

Answer:

The answer is 15 degrees.

Step-by-step explanation:

1) Do you see the little square symbol at the bottom right corner? That represents that the angle is a right angle, or a 90 degree angle, in other words.

2) If you know that the first part of the angle is 45 degrees, as it is already labeled, then subtract 90 degrees - 45 degrees = 45 degrees, which is the angle that is left.

3) Set 3x equal to 45 degrees, and solve.

4) So, the equation is 3x = 45; divide by 3 on both sides to get x = 15 degrees.

Hope this helps! Feel free to give me Brainliest if you feel this helped. Have a good day, and good luck on your assignment. :)

Answer:

x^2+54x+2 and 7x^2+88x+3

Step-by-step explanation:

Answer:

Solution,

tan45 = [tex]\frac{u}{v}[/tex]

or, 1 =  [tex]\frac{u}{v}[/tex]

or, v = u

Now,

Using Pythagoras Theorem,

[tex](8\sqrt{2})^{2} = u^{2} +v^{2}\\or, 128 = u^{2} +u^{2}\\or, 128 = 2u^{2}\\or, u^{2} = 64\\\\or, u = 8cm = v[/tex]

Step-by-step explanation:

[tex] \underline{ \underline{ \text{Given}}} : [/tex]

[tex] \underline{ \underline {\text{To \: find}}} : [/tex]

[tex] \underline{ \underline{ \text{Solution}}}\: [/tex] :

[tex] \tt{sin \: \theta = \frac{p}{h}} [/tex]

⟶ [tex] \tt{ \sin(45 \degree) = \frac{u}{8 \sqrt{2} } }[/tex]

⟶ [tex] \tt{ \frac{1}{ \sqrt{2} } = \frac{u}{8 \sqrt{2}} } [/tex]

⟶ [tex] \tt{ \sqrt{2 \: } u = 8 \sqrt{2}} [/tex]

⟶ [tex] \tt{u = \frac{8 \sqrt{2} }{ \sqrt{2}} } [/tex]

⟶ [tex] \tt{u = 8}[/tex]

Again ,

[tex] \tt{tan \: \theta = \frac{p}{b}} [/tex]

⟶ [tex] \tt{ \tan(45 \degree) = \frac{8}{v}} [/tex]

⟶ [tex] \tt{1 = \frac{8}{v}} [/tex]

⟶ [tex] \tt{v = 8}[/tex]

[tex] \red{ \underline{ \boxed{ \boxed{ \text{Our \: final \: answer : \boxed{ \tt{u = 8 \: and \: v = 8}}}}}}}[/tex]

Hope I helped ! ♡

Have a wonderful day / night ! ツ

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Answer:

5

Step-by-step explanation:

18-4(5)=-2

Answer:

18-4n = -2

Hope this helps :)

Answer:

about 35 years rounding its 36

Step-by-step explanation:

i converted evrything to positive and did 1371 minus 1296 to get 75 and i divided that by 2.0834

Step-by-step explanation:

t=d/r

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

Answer:

=-f +12g

Step-by-step explanation:

Answer:

-1f+12g

Step-by-step explanation:

Answer:

Equation : y = 4.50D + 40

Number of pairs = 16

Step-by-step explanation:

It is given that:

Per day wage of Roger = $40

Commission on per pair of shoes = $4.50

Daily goal = $112

Number of pairs of shoes = D

Total earning = y

y = 4.50D + 40

112 = 4.50D + 40

4.50D = 112 - 40

4.50D = 72

Dividing both sides by 4.50

[tex]\frac{4.50D}{4.50}=\frac{72}{4.50}\\D = 16 \\[/tex]

Therefore,

Equation : y = 4.50D + 40

Number of pairs = 16

Answer:

log 12-2 gets u 10+3 GET U 13Step-by-step explanation:

Answer:

2x+2x+2x= 180

6x=180

x= 30

Step-by-step explanation:

Answer: x=30

Step-by-step explanation:

Answer: First number 3 Second 18

Step-by-step explanation: