Does the ratio 15/12 and 5/4 form a proportion?

The answer is yes

Answer:

0.45 m, 0.63 m, 0.72 m

Step-by-step explanation:

Let the three parts of the line be 5x, 7x and 8x

Therefore,

5x + 7x + 8x = 1.8

20x = 1.8

x = 1.8/20

x = 0.09

5x = 5*0.09 = 0.45 m

7x = 7*0.09 = 0.63 m

8x = 8*0.09 = 0.72 m

Answer:

C

Step-by-step explanation:

32/4 (4)

32/16 = 2

Therefore, the answer is C, 2.

I hope this helps! Please mark me brainliest if you can!

Answer:

480^12

Step-by-step explanation:

When you're multiplying exponents with the same base, the simplest way is to add the two exponents:

480^8 * 480^4 =

480^(8+4) =

480^12

Then solve, but your question doesn't ask for that.

Answer:

10 dogs, 5 cats

Step-by-step explanation:

2:1 = whole to half

The percentage error is approximately 10%

We have:

Estimated = 1242

Actual = 1378

The change in the measurement is:

Change = Actual - Estimate

So, we have:

Change = 1378 - 1242

Evaluate

Change = 136

The percentage error is then calculated as:

Percentage error = Change * 100%/Actual

This gives

Percentage error = 136 * 100%/1378

Evaluate

Percentage error = 9.869%

Approximate

Percentage error = 10%

Hence, the percentage error is approximately 10%

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Answer: 1. no

2. yes

3. no

4. yes

Step-by-step explanation:

Answer:

the K/D range is 22%

Step-by-step explanation:

Answer:

the answer is J

Step-by-step explanation:

Answer:H

find the slope

Answer:

B

Step-by-step explanation:

Because the slope is a positive slope (goes through the positive quandrants on the graph), we can eliminate answer choices c. Now, if we solve a, b, and d and we can see if the slope + y-intercept matches the graph.

For A.) (solve for y to get a y=mx + b equation)

3x-2y=4

-2y= -3x + 4

y= 3/2 -2

For B.)

3x-2y= -4

-2y= -4-3x

y= 3/2 + 2

For D.)

2x+3y= 4

3y= 4-2x

y= -2/3x + 4/3

Now, if we look at D, the slope is negative so it cannot be D. That leaves us with A and B. The b in the y=mx + b equation stands for the y-intercept, so we can see that the y-intercept is 2. So, since the graph intersects the y-axis at (0,2), the answer is B! y=3/2 + 2 has a positive slope and 2 for the y-intercept!

Answer:

- 4

Step-by-step explanation:

( 3 - r ) / ( 1 + 5) = 7/6

[tex]\frac{3-r}{1+5}[/tex] = [tex]\frac{7}{6}[/tex] ⇒ 3 - r = 7 ⇒ r = - 4

Answer:

m<1 is 115°

This is said to be true by the alternate interior angles theorum which describes this situation

Step-by-step explanation:

Answer:

115

Step-by-step explanation:

alternate interior angles

Answer:

7/10

Step-by-step explanation:

4 1/5 - 3 1/2 = 7/10

Answer:

a

 [tex]P( X > 46) = 0.7 \ minute[/tex]

b

[tex]\mu = 42 \ minute[/tex]

Step-by-step explanation:

From the question we are told that  

   The procedure for performing a certain task is uniformly distributed on the interval from( a =  32 )minutes to (b= 52) minutes

  Generally the cumulative distribution function for continuous uniform distribution is  

             [tex]F(x) = \left \{ {{0 \ \ \ \ \ for \ x \ x < a} \atop {\frac{x-a}{b-a} } \ \ for \ a \le x \ge b} \atop {1 \ \ \ \ \ \ \ for \ x > b }\right.[/tex]

Generally the probability that it takes more than 46 minutes to learn the procedure is mathematically represented as

          [tex]P( X > 46) = F(46) = \frac{46 - 32}{52-32}[/tex]

=>       [tex]P( X > 46) = 0.7 \ minute[/tex]

Generally the average time required to learn the procedure is mathematically represented as

        [tex]\mu = \frac{a + b}{2}[/tex]

=>     [tex]\mu = \frac{32 + 52}{2}[/tex]

=>     [tex]\mu = 42 \ minute[/tex]

Answer:

Step-by-step explanation:

When x=-2; y = -16+12= -4. This means a=-4

When x=-1; y= -2+3 = 1. This means b= 1.

When x=2; y = 16 +12 = 28 . This means c= 28

When x=4; y= 128+48 = 176. This means d= 176

Answer:

The mean will double and add 7, the SD will double

Step-by-step explanation:

If the old mean is x, the new mean will be 2x+7, and since the SD is based on x, the SD for after the curve will based on 2x, so it will also double.

Answer:

x+8

Step-by-step explanation:

"a number" is x? And it is added to 8.

Answer:

35 if the n are m but while im her pla help me with my question i rilly need the answer its ergent thnx

Step-by-step explanation:

Answer:

5m+15n+5

Step-by-step explanation:

Combine like terms

10m-5m = 5m

12n+3n = 15n

5m+15n+5

Answer:

posistive i think welp hope this helps :D

Step-by-step explanation:

Answer:

Adult : $12.5 per ticket

Kids: $7.5 per ticket

Day 1

Adult tickets were $75

Kids tickets were $37.5

Day 2

Adult tickets were $100

Kids tickets were  $30

Step-by-step explanation:

Answer:

The first Day for Adults it cost 18.75 and for the kids it cost 22.5

The Second Day for the Adults is 16.25 and for the kids it is 32.5

Step-by-step explanation:

The way I Solved this is i took the amount it cost a didved it by how many Adult tickets there were and how many Kids tickets there and there you go. Super Easy!!

Answer:

(7x^2 -1)(x - 2).

Step-by-step explanation:

7x^3 - 14x^2 - x + 2

We can factor this by grouping - that is factoring the first 2 terms and the last 2:

= 7x^2(x - 2)  - 1(x - 2)      <-- the x - 2 is common to both parts so we have:

(7x^2 -1)(x - 2).

Answer:

The answer is 230.14

Easy long division

Answer:

= √b/2a⁴

Step-by-step explanation:

First, we can simplify the ³⁄₁₂ to ¼

Next, we can simplify the a⁻³/a⁵ to a⁻⁸ which is ¹⁄ₐ⁸

Then we can simplify the b²/b to b

Now we should have:

√(b/4a⁸)

= √b/√(4a⁸)

= √b/2a⁴

Answer:

d = 140t

Step-by-step explanation:

The function that relates the distance travelled d to the time t is d = f(t) = 140t.

Speed is a scalar quantity which measures the rate of change of the position of an object without measuring on the direction.

In other words, it can be defined as the ratio of distance covered by an object to the time taken by the object to cover the distance.

The train leaves the station at time t = 0.

Distance travelled by the train = 280 kilometers

Time taken to travel the distance = 2 hours

Speed = Distance / Time

           = 280 / 2

           = 140 kilometers/ hour.

Given that train travels at a constant speed.

So for any distance 'd' and the time taken to travel the distance 't',

d / t = 140

d = 140t

d = f(t) = 140t

Hence the distance travelled by the train can be related to the time taken by the function, d = f(t) = 140t

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Answer:

why she doing this

Step-by-step explanation:

Tell them that they are slow

Answer:

-2/7

Step-by-step explanation:

thats how math works?

Step-by-step explanation:

First, we need to get it to slope-intercept form:

So you distribute the 4 to x-4:

4x-16

now the equation looks like this:

y-6=4x-16

now move the -6 to the other side:

y=4x-10

Answer:

The graph of the equation y - 6 = 4(x - 4) is attached at the end.

To graph the equation y - 6 = 4(x - 4), rewrite it in slope-intercept form by solving for y:

y - 6 = 4(x - 4)

y - 6 = 4x - 16

y = 4x - 16 + 6

y = 4x - 10

Now, the slope (m) is 4 and the y-intercept (b) is -10.

To graph the equation, plot a few points and draw a straight line passing through those points.

Choose some x-values and calculate the corresponding y-values:

For x = 0, y = 4(0) - 10 = -10

For x = 2, y = 4(2) - 10 = -2

For x = 4, y = 4(4) - 10 = 6

For x = 6, y = 4(6) - 10 = 14

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Correct OPTIONS:

A It is snowing at a steady rate.

B It is snowing at a rate of ½ inch per hour.

C The amount of snow is proportional to the time.

D The coordinate (2, 1) indicates that it has snowed 2 inches in 1 hour

Answer:

D The coordinate (2, 1) indicates that it has snowed 2 inches in 1 hour

Step-by-step explanation:

Using the graph given, let's analyse each options provided to see which statement is ✅CORRECT or ❌ INCORRECT.

A. "It is snowing at a steady rate."

✅This is CORRECT because a straight line graph has a constant rate of change.

B. "It is snowing at a rate of ½ inch per hour."

✅This is CORRECT, because when x (time in hrs) is 1, y (snow in inches) is ½.

C. "The amount of snow is proportional to the time."

✅This is CORRECT because the line of the graph intercepts the point of origin, (0, 0).

D. "The coordinate (2, 1) indicates that it has snowed 2 inches in 1 hour"

❌This is NOT CORRECT. The coordinate (2, 1) indicates that it has snowed 1 inch in 2 hours rather.

x = 2 => time(hours)

y = 1 => snow(inches)

Answer:

The slope is 0

Step-by-step explanation:

y = mx + b

y = 0x - 4

You can also graph it

Since the graph would be straight, the slope is 0