P P,Q and R can finish a task in 8, 10 and 12 hours respectivly.They started working together but after 3 hours, P and R left. How long will Q take to finish the task now?​

Detail it

Considering the given linear equation, it is found that the correct statement is given by:

B. The graph of this equation is a vertical line.

It is:

Ax + By = C

Considering that A ≠ 0 and B = 0, the expression is represented by:

Ax = C

x = C/A.

Which means that the graph is a vertical line, hence option B is correct.

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Answer:

Tom sits in the middle and he is 18

Step-by-step explanation:

On the table you will first mark off Tom from being in the rear, as well as being 19

You will mark off Tom and Roy from the 1st, which places Davis as 1st, you also know that Tom is neither 1st nor last, so he is in the middle.

Now you see that Roy is neither in the 1st nor middle, so he is last.

Last is also the 20 yr old, so Roy is 20yrs and last seat.

Tom is neither 19 or 20.

So Tom is in the middle and 18yrs old

Answer:

[tex]A=4x^{2} +x[/tex]

Step-by-step explanation:

[tex]A = (3x)(2x+1) -2x(x+1)[/tex]

[tex]=6x^{2} +3x-2x^{2} -2x[/tex]

[tex]=4x^{2} +x[/tex]

Hope this helps

The total number of children in Stephan's school prefer pepperoni pizza where 375 children in Stephan's school is 310.

Equivalent ratio is the ratio which is same in the value as the original ratio, but the numerator and denominator is different for both the ratios.

Stephan read that 62 out of every 75 children prefer pepperoni pizza. Thus, the ratio of children who prefer pepperoni pizza to the total children is,

[tex]n=\dfrac{62}{75}\\[/tex]

Let suppose there are x children in Stephan's school prefer pepperoni pizza. There are 375 children in Stephan's school. The ratio of children who prefer pepperoni pizza to total 375 children is,

[tex]\dfrac{x}{375}[/tex]

Both the above ratio are for the same condition, and are equivalent ratio. Thus,

[tex]\dfrac{x}{375}=\dfrac{62}{75}\\x=\dfrac{62}{75}\times375\\x=310[/tex]

Thus, the total number of children in Stephan's school prefer pepperoni pizza where 375 children in Stephan's school is 310.

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Answer:

m<ABC = 90 degrees  m<ABD = 57 degrees

Step-by-step explanation:

OMG this is soooooo easy I love geometry.

Answer:

its has to be 45.6 becuase when you calculate you get 45.66666667 so its either that or 46

Step-by-step explanation:

add 75+1+80+5+85+7+90+3+95+1+100+6=548

then you divide by the amount of numbers there are which is twelve so

548 divided by 12 is 45

Answer:

(-1,5)

(0,7)

(1,9)

(2,11)

(3,13)

(4,15)

(5,17)

Step-by-step explanation:

Because we are already given our slope and a point to help us create our line. With this information, we can find the other points that we would use to create the line for a slope = 2 passing through the point (-1, 5).

To do so we use the information that is a slope equal  [tex]m=\frac{rise}{run}[/tex]

So we make our slope which is two look like [tex]m=\frac{2}{1}[/tex]

So to find our next point we would have to rise up 2 units and run 1 unit to the right from (-1, 5). We do the same to find the next points.

We get the following points from doing so  

(0,7)

(1,9)

(2,11)

(3,13)

(4,15)

(5,17)

You will use the points to create the line for the slope 2 passing through the point (-1, 5)  

Answer:

A, g(x) = -f(x)+5

Step-by-step explanation:

a^2-9ab+3ab^2

Sure hope this helps you

Answer:

9.16

Step-by-step explanation:

350 = 12 (x + 20)

350 = 12x +240

350 = 12x +240

-240           -240

110 = 12x

_______

     12

9.16 or 9.17 = x

Answer:

4

Step-by-step explanation:

So, 5/15 shirts are gray.

This can be simplified to 1/3. (5÷5 = 1, 15÷5=3)

So taking this data into account, if we have 12 shirts, one third of them should be gray. So, 12/3 = 4.

Answer:

4

Step-by-step explanation:

Trust

The error in Courtney claims that Option 2 would result in the class using 270 gallons is that he multiplied rather than dividing.

From the information given, it should be noted that Courtney claims that Option 2 would result in the class using 270 gallons of water during 180 minutes of showering is incorrect because she should have divided and not multiplied. This will be:

= 270 / (3/2)

= 180 × 2/3

= 120

Therefore, 120 gallons will be used.

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For a rotation of 180° clockwise or counterclockwise, the x and y will always be the opposite. For instance, if coordinates (4, 7) are being 180° rotated, the new set of coordinates will be (-4, -7).

Remembering the rule, the final answer to your question is A, 180° clockwise rotation about the origin.

Answer:

30

Step-by-step explanation:

2(n+3y)

Plug in the numbers

2(3+3(4))

2(3+12)

2(15)

30

Answer:

39 units

Since two side lengths and a right angle are given, we can use pythogoras theorem to determine the missing side (c) of the triangle. It should be noted that pythgoras theorem can only be used if the triangle is a right triangle.

Pythogoras theorem formula:

[tex](\text{Side}_{1} })^{2} + (\text{Side}_{2} )^{2} = (\text{Hyptenuse})^{2}[/tex]

Substitute the legs of the triangle and the hyptenuse

[tex]\implies (36)^{2} + (15 )^{2} = (c)^{2}[/tex]

Simplify both sides of the equation

[tex]\implies 1296 + 225 = (c)^{2}\\[/tex]

[tex]\implies 1521 = (c)^{2}\\[/tex]

Take square root both sides

[tex]\implies \sqrt[2]{1521 } = \sqrt[2]{c^{2} }[/tex]

Solve for "c" by simplifying the roots

[tex]\implies \sqrt[2]{39 \times 39 } = \sqrt[2]{c \times c }[/tex]

[tex]\implies \boxed{39 = c}[/tex]

Thus, the measure of the missing side length (c) is 39 units.

Answer:

$2.25

Step-by-step explanation:

because u divide by 2 and then u get the correct answer I think its it

Answer:

√250 + 2 = 5√10 + 2

Step-by-step explanation:

1. refer to image attached

2. split the area into a rectangle and triangle (see red line)

3. find the area of the triangle

a. find the base (2)

b. find the height (2)

area = base * height / 2 = 2 * 2 / 2 = 2

4. find the area of the rectangle

a. find the width

the width can be found from the right triangle at the top right. the height is 2 and the bottom leg is 1, so using the pythagorean theorem, the hypotenuse, which is the width of the triangle, equals

√(2²+1²)  = √5 as our width

b. find the length

given the top right triangle, we have a height of 5 and another leg length of 5, so the length = √(5²+5²) = √50

the area of the rectangle is thus √50 * √5 = √250

4. the area is thus the two areas added up, or √250 + 2

Answer:

d

Step-by-step explanation:

Since it had the lowest mean absolute deviation, his scores were closest together in Math.

Hence, lower values of the mean absolute deviation means that the scores are closer, and thus his scores were closest together in Math.

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Step-by-step explanation:

60/100 ×50

= 30 ........

Answer:

A

Step-by-step explanation:

Give some examples like

2/3

Answer:

it's simple math honey, just look it up

Answer:

Length =5cm

Step-by-step explanation:

When there's a problem ask

Answer:

7,560

Step-by-step explanation:

70% of 1750 × 6 = 7,560

Answer:

42

Step-by-step explanation:

add base 1, 2, 3 & 4 so 9 + 9 + 15 + 9 = 42

The measure of angle A is 30 degree, the value of tan A is 1/√3 and the area of triangle ABC is 280.6 squared inches.

When the three sides of a triangle is known, then to find any angle, the law of cosine is used.

It can be given as,

[tex]\angle A=\cos^{-1}\left(\dfrac{b^2+c^2-a^2}{2bc}\right) \\\angle B=\cos^{-1}\left(\dfrac{a^2+c^2-b^2}{2ac}\right) \\\angle C=\cos^{-1}\left(\dfrac{a^2+b^2-c^2}{2ab}\right)[/tex]

Here, a,b and c are the sides of the triangle and A,B and C are the angles of the triangle.

Triangle ΔABC has side lengths of a = 18, b=18√3  and c = 36 inches.

Put the value, in the cosine law, the measure of angle A.

[tex]\angle A=\cos^{-1}\left(\dfrac{b^2+c^2-a^2}{2bc}\right) \\\angle A=\cos^{-1}\left(\dfrac{(18\sqrt{3})^2+36^2-18^2}{2(18\sqrt{3})(36)}\right) \\\angle A=0.5236\rm\; rad\\\angle A=30^o\rm\; degree\\[/tex]

Using the chart of unit circle, the value of tangent A can be found out. The tangent A is,

[tex]\tan A=\tan 30^o\\\tan A=\dfrac{1}{\sqrt{3}}[/tex]

Use the following formula to find area of ΔABC.,

[tex]A=\dfrac{ab.\sin C}{2}\\A=\dfrac{18\times18\sqrt{3}.\sin C}{2}\\A=280.6\rm\; in^2[/tex]

Thus, the measure of angle A is 30 degree, the value of tan A is 1/√3 and the area of triangle ABC is 280.6 squared inches.

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[tex]2x + 3y = 9\\3y = -2x + 9\\y = -\frac{2}{3}x + 3[/tex]

Look at the graph picture I attached

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

c is the intercept, which is why the graph crosses the y-axis at +3

to find where it crosses the x-axis, we make y = 0

[tex]y = 0\\\to -\frac{2}{3}x + 3 = 0\\-\frac{2}{3} = -3\\\frac{2}{3}x = 3\\2x = 9\\x = \frac{9}{2}\ \ (=4.5)[/tex]

Answer:

All of the rugs are the same size after making the cuts. The vertical line goes down the center of the rectangle, making two congruent parts. The diagonal line also splits the rectangle into two congruent parts because the area of a right triangle is exactly half the area of the rectangle.

Step-by-step explanation:

Answer:

54

Step-by-step explanation:

( - 3 )³

= ( - 3 ) x ( - 3 ) x ( - 3 )

= - 27

( 5 - 2 )^4

= 3^4

= 3 x 3 x 3 x 3

= 81

( - 3 )³ + ( 5 - 2 )^4

= - 27 + 81

= 81 - 27

= 54