Tell whether the fractions are equivalent 1/2 2/5

Answer:

(6,1)

Step-by-step explanation:

I used the Midpoint Formula.

Answer:

21.6 is 54% of 40.

Step-by-step explanation:

21.6 ÷ 40 = 0.54 = 54%

Method 1:

[tex]21\dfrac{3}{5}=\dfrac{21\cdot5+3}{5}=\dfrac{108}{5}\\\\\\\\\begin{array}{ccc}40&-&100\%\\\dfrac{108}{5}&-&p\%\end{array}\qquad\text{cross multiply}\\\\\\\\40p=\dfrac{108}{5}\cdot100\\\\40p=108\cdot20\\\\40p=2160\qquad\text{divide both sides by 40}\\\\\boxed{p=54}[/tex]

Method 2:

[tex]\dfrac{\frac{108}{5}}{40}\cdot100\%=\dfrac{108}{5}\cdot\dfrac{1}{4}\cdot10\%=\dfrac{108}{2}\%=54\%[/tex]

|a| = a for a ≥ 0

|a| = -a for a < 0

|-15| = -(-15) = 15

|15| = 15

Look at the picture.

We must use the Pythagorean theorem:

[tex]AB^2+OB^2=AO^2\\\\5^2+r^2=8.6^2\\\\25+r^2=73.96\qquad\text{subtract 25 from both sides]\\\\r^2=48.96\to r=\sqrt{48.96}\\\\\boxed{r\approx7}[/tex]

Answer:

x = 2

y = 6

Step-by-step explanation:

y= 6x - 6

-3x- 3y= -24

to find the value of x:

- 3x - 3 (6x - 6)= -24

- 3x - 18x + 18= -24

-21x + 18 = -24

-21x= -42

x = 2

Now, to find the value of y:

(substitute x into the equation)

y = 6 x - 6

y = 6 (2) - 6

y = 12 - 6

y = 6

Answer:

(3r-10) (r+8)

Step-by-step explanation:

3r-34r+80

The first step is to combine like terms

3r - 34r

is -31r

-31r+80

We cannot factor since 31 is a prime number and 80 is not a multiple of 31

If you mean

3r^2-34r+80

(3r-10) (r+8)

Answer:

180

Step-by-step explanation:

30% of 150 = 30

because

30% of 15 = 3

30 + 150 = 180

Answer:

Step-by-step explanation:150+30=180

Answer:

inches= 342''

feet= 28.5'

yards= 9.5 yds

Step-by-step explanation:

inches= 90 +54 + 198= 342''

feet=342*(1/12)= 28.5'

yards= 9.5 yds

Convertion Rates

1'=12''

1yd = 3'

Step-by-step explanation:

inches= 342''

feet= 28.5'

yards= 9.5 yds

Answer:

The temperature six hours ago was 13 °F

Step-by-step explanation:

Six hours ago the temperature was x degrees.

The temperature now is "6 degrees less than twice the temperature that it was six hours ago."

The temperature now is 2x - 6.

The temperature now is 20 deg.

2x - 6 = 20

2x = 26

x = 13

Answer: The temperature six hours ago was 13 °F.

Answer:

C  PLEASE GIVE BRAINLIEST

Step-by-step explanation:

30 - 14 = 16girls

ratio is : 14/16 = 7/8

Answer:

C

Step-by-step explanation:

I took the test

Answer: 200 yards

Step-by-step explanation:

So if 3/4 inches on the map is equal to 50 yards then you could divide the 3 inch distance from him to his home by 3/4 and then multiply that answer by 50. So 3 ÷ 3/4 = 4. 4 * 50 = 200. He is 200 yards from his home.

Answer:

Step-by-step explanation:

To solve this problem, we use the rule of three, if 50 yards represents 3/4 inches, how many yards would represent 3 inches?

[tex]x=3in\frac{50yd}{\frac{3}{4}in } =3\frac{200}{3}yd=200yd[/tex]

So, 3 inches represents 200 yards, that means Harper is 200 yards away home.

Remember that the rule of three is just about using the ratio that the problem already gave.

Therefore, the answer is 200 yards.

Answer:

10%

Step-by-step explanation:

We have been given that the manager of a store orders model railroad sets that cost $390 and sells them for $429.  

We will use markup % formula for our given problem.

[tex]\text{Markup percentage}=\frac{\text{Selling price- Cost}}{\text{Cost}}\times 100[/tex]

[tex]\text{Markup percentage}=\frac{429-390}{390}\times 100[/tex]

[tex]\text{Markup percentage}=\frac{39}{390}\times 100[/tex]

[tex]\text{Markup percentage}=\frac{1}{10}\times 100[/tex]

[tex]\text{Markup percentage}=10[/tex]

Therefore, markup is 10% of cost.

Answer:

Distance from her house to her work = 12.4 Miles

Step-by-step explanation:

Given :-

==> Automator mileage gauge read 38643.8 Miles before she left to work.

==> Automator mileage gauge read 38668.6 Miles after she came home from work.

==> She didn't drive anywhere else during the day. home to work & work to      home.

Car driven during the day = 38668.6 - 38643.8

                                           = 24.8 Miles

Let the distance from home to work be X

*It is assumed that Distance from home to work = Distance from work to home

So, Distance from work to home = X

Total distance driven during the day = Distance from home to work + Distance from work to home

Total distance driven during the day = X + X

                                                    24.8 = 2X

                                                    24.8 ÷ 2 = X

                                                    12.4 = X

Distance from her house to her work = 12.4 Miles

Answer: I think the answer is 24.8

Step-by-step explanation:

Answer:

Perimeter of ΔAKL is, [tex]27 +9 \sqrt{3}[/tex] units.

Area of  ΔAKL is, [tex]\frac{81\sqrt{3} }{2}[/tex] square units

Step-by-step explanation:

Given: In ΔAKL , AK = 9 units , [tex]m\angle K = 90^{\circ}[/tex] and [tex]m\angle A= 60^{\circ}[/tex].

In ΔAKL

[tex]\tan (A) = \frac{KL}{AK}[/tex]

Substitute the value AK = 9 units and [tex]m\angle A =60^{\circ}[/tex] to solve for KL ;

[tex]\tan(60^{\circ}) = \frac{KL}{9}[/tex]

[tex]\sqrt{3} = \frac{KL}{9}[/tex]

⇒[tex]KL = 9\sqrt{3} units[/tex]

In right angle ΔAKL,

Using Pythagoras theorem;

[tex]AL^2 = AK^2+KL^2[/tex]                     ......[1]

Substitute AK = 9 units and [tex]KL =9\sqrt{3} units[/tex] in [1] to solve for AL;

[tex]AL^2 = 9^2+(9\sqrt{3})^2[/tex]

[tex]AL^2 = 81+(81 \cdot 3)[/tex]

[tex]AL^2 = 81+243 = 324[/tex]

[tex]AL = \sqrt{324} = 18 units[/tex]

Perimeter of triangle is the sum of all the sides.

Perimeter of triangle AKL = AK +KL +AL = [tex]9 + 9\sqrt{3} + 18 = 27 +9 \sqrt{3}[/tex] units.

Formula for Area of right angle triangle is given by:

[tex]A = \frac{1}{2} Base \times Height[/tex]

Area of triangle AKL=  [tex]\frac{1}{2} (9\sqrt{3}) \times (9)[/tex]

                                  = [tex]\frac{81\sqrt{3} }{2}[/tex] square units

Final answer:

The perimeter of triangle AKL is approximately 29.09 m, and the area is 20.25 m², calculated using the properties of a 30°-60°-90° right triangle.

Explanation:

To find the perimeter of △AKL, we need to determine the lengths of all three sides. We know that AK = 9 m, ∠K = 90° (which makes △AKL a right triangle), and ∠A = 60°. Because the angles in a triangle add up to 180°, ∠L must be 30° (180° - 90° - 60°). In a 30°-60°-90° right triangle, the lengths of the sides are in the ratio 1:√3:2. Thus, if AK is the side opposite the 60° angle, AL must be half of AK, and KL must be AK times √3.
Therefore, AL = ½ × 9 m = 4.5 m, and KL = √3 × 9 m ≈ 15.59 m. The perimeter is the sum of AK, AL, and KL: 9 m + 4.5 m + 15.59 m ≈ 29.09 m.

The area of △AKL can be found using the formula for the area of a right triangle, which is ½ × base × height. AK and AL can serve as the base and height, respectively, so the area A is ½ × 9 m × 4.5 m = 20.25 m².

The percentage increase in the height of the corn stalks is 20%. This was calculated by subtracting the old height from the new height, dividing by the old height, and then multiplying by 100.

The question is asking about the percentage increase in the height of the corn stalks that Alice planted. The stalks were previously 60 inches tall and now, they are 72 inches tall.

The formula to calculate the percentage increase is:

[(New Value - Old Value) / Old Value] x 100%

Substituting the given values into the formula, we get

[ (72 - 60) / 60 ] x 100%

This simplifies to [12/60] x 100%, which equals to 20%.

Therefore, there has been a 20% increase in the height of the corn stalks.

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The simplified form of the rational expression 6x^2-54/5x^2+15x is 6(x - 3)/5x. This was achieved by factoring the original expressions, cancelling out common terms, and applying the difference of squares formula.

The subject here is the simplification of a rational expression. First, let's factor the numerator (6x^2 - 54) and the denominator (5x^2 + 15x). The common factor in the numerator is 6 and in the denominator is 5x. After factoring we get:

6x^2 - 54 = 6(x^2 - 9)

5x^2 + 15x = 5x(x + 3)

Now, we can use the property a^2 - b^2 = (a + b)(a - b) to further simplify x^2 - 9 to (x - 3)(x + 3). This gives our new numerator as 6(x - 3)(x + 3).

The denominator 5x(x + 3) remains the same. Therefore, the simplified form of the rational expression is 6(x - 3)(x + 3)/5x(x + 3). The (x + 3) terms can be cancelled out leaving us with the final simplified rational expression of:

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Answer:

Diagram attached

AJ = 8.75 in.  

Step-by-step explanation:

Since triangles HBA & HKJ are similar,    

BH/AH = KH/JH  

3 in /5.25 in = 8 in /JH  

JH = 14 in  

JA = JH - AH = JH - 5.25 in = 8.75 in

HJ = 14 in.

AJ = 14 in - 5.25 in  

AJ = 8.75 in.  

We know that there are about 3.785 liters in 1 gallon. From here we could pour 3 whole liters into a one-gallon container without overflowing since 3 < 3.285 liters. But if we try to pour the next whole liter( 4 liters) it would be too much since 4 is greater then 3.785 liters. So the answer is 3 liters.  

Hope this helps. <3

Final answer:

Using the Pythagorean theorem, the length of the shadow cast by a 30m tall building, with a diagonal distance of 36m from the top of the building to the top of the shadow, is calculated to be approximately 19.9 meters.

Explanation:

To find the length of the shadow cast by a 30m tall building, we can use the Pythagorean theorem. This theorem relates the lengths of the sides of a right triangle. Here, the building and its shadow form the two legs of a right triangle, and the line from the top of the building to the top of the shadow is the hypotenuse.

Let's denote:

The height of the building (opposite side) as O = 30m

The length of the shadow (adjacent side) as A

The distance from the top of the building to the top of the shadow (hypotenuse) as H = 36m

According to the Pythagorean theorem, we have:

O2 + A2 = H2

Plugging in the known values, we get:

302 + A2 = 362

900 + A2 = 1296

A2 = 1296 - 900

A2 = 396

A = √396

A ≈ 19.9m (rounded to one decimal place)

Therefore, the length of the shadow is approximately 19.9 meters.

Answer:

#7 is 3,150 tickets

Step-by-step explanation:

You multiply 126 and 25 together to get 3,150, because if each of the 126 students have to sell 25 tickets, that means you have to use multiplication.

Answer: 31.5 miles

Step-by-step explanation: know how many miles tabitha walked per hour, which is 4.5 miles. then multiply 13.5 x 2, and add 4.5 to receive your answer - 31.5.

Answer:

Step-by-step explanation: The answer is 31.5 miles. The way I got it is by multiplying 13.5 by 2 because that will be 6 hours already. That gives me 27. Then you divide 13.5 to get how much she walk for just 1 hour which is 4.5. When you add that to 27, you get 31.5. Hope this helps!!!!!  

Please mark Brainliest!!!!!!!!!!!☺

To calculate 6691 divided by 28 using long division, divide each set of numbers step by step to arrive at a quotient of 238 with a remainder of 27, resulting in a decimal of approximately 238.96 when rounded.

The question involves the process of long division which is a method used in arithmetic. The student is trying to divide 6691 by 28:

Divide 66 by 28, which goes 2 times. Write 2 above the division bar, to the right of the first quotient place.

Multiply 2 by 28, which is 56, and subtract that from 66 to get a remainder of 10. Bring down the next digit, 9, to make 109.

Divide 109 by 28, which goes 3 times. Write 3 on the division bar. Multiply 3 by 28 (equals 84) and subtract from 109 to get 25.

Bring down the next digit, 1, to make 251. Divide this by 28, which goes 8 times. Eight times 28 is 224. Subtract this from 251 to get 27.

27 is less than 28, so the division process stops here. The answer up to this point is 238, with a remainder of 27.

The long division calculation of 6691 divided by 28 is 238 with a remainder of 27 or as a decimal, 238.96.

Answer:

[tex]3x+4y=-24[/tex]

Therefore, option C is correct.

Step-by-step explanation:

We have been given the equation:

[tex]y=\frac{-3x}{4}-6[/[/tex]

We will take LCM 4 on right hand side of the above equation:

[tex]y=\frac{-3x-24}{4}[/tex]

Now, we will multiply the 4 in denominator on right hand side to the y in left hand side pof the equation we get:

[tex]4y=-3x-24[/tex]

After rearranging the terms we get:

[tex]3x+4y=-24[/tex]

Therefore, option C is correct.

Answer:

22 25/32

Step-by-step explanation:

well you just dividde the number in half and add the half and continue this and that's the seventh term. please be grateful it took me five minutes to do this

The seventh term of this sequence is 34.17875

Given : Each consecutive term is calculated by adding the half of preceding term to the preceding term.

Like : 2 + 1/2 (2) = 2 + 1 = 3

3 + 1/2 (3) = 3 + 3 / 2 =  3 + 1.5 = 4.5 or 4 1/2

4.5 + 1/2 ( 4.5 ) = 6.75

Similarly :

6.75 + 1/2 (6.75) = 10.125

10.125 + 1/2 (10.125) = 15.1875

15.1875 + 1/2 (15.1875) = 22.78125

22.78125 + 1/2 (22.78125) = 34.17875

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Answer:

a=9

b=4

v=69

Step-by-step explanation:

Answer:

Divide 9 by 0.006 you should get 1500

Step-by-step explanation:

Answer:

0.054

Step-by-step explanation:

Velocity = wavelength times frequency

=  9 * 0.006

=  0.054

Answer:

x² + y² = 5

Step-by-step explanation:

The circle with center (h, k) and radius r has equation ...

... (x -h)² + (y -k)² = r²

You can find r² using the Pythagorean theorem or the distance formula, or you can simply calculate what it needs to be to make one or the other of the points lie on the circle.

For (h, k) = (0, 0), the equation is ...

... (x -0)² + (y -0)² = r²

Using (-1, 2) for (x, y), we can find r² as ...

... (-1 -0)² + (2 -0)² = r² = 1 + 4 = 5

Then the circle equation is ...

... x² + y² = 5