A truck travels 30 km in 30 minutes. What is the average speed of the truck?

Answer:

5, 8, 11, 14, 17, 20, 23, 26, 29, 32

Answer:

180

Step-by-step explanation:

5×+36 is 180

hope this helps !!?

Answer:

x = 7.2

Step-by-step explanation:

First we write down the equation

5x + 36

In order to find what x equals we will need to isolate the variable. To do this we divide the variable by 5.

This gets us...

x = 7.2

Sorry if you didn't need to find what x equaled.

Answer:

t is 3.055.<-not a decimal just a period

Step-by-step explanation:

Answer: C 1/4

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

edge 2021

Answer:

2

Step-by-step explanation:

Slope = ( y2-y1) / (x2-x1)

= (1- (-5)) / (4-1)

= (1+5) / 3

= 6/3

= 2

The slope of the line that goes through the points (1.-5) and (4.1) will be 2. Option D is correct.

The ratio that y increase as x increases is the slope of a line. The slope of a line reflects how steep it is, but how much y increases as x increases. A straight line is a combination of endless points joined on both sides of the point. A linear equation has the form y = mx + b in the slope-intercept format. X and Y are the variables in the equation. The values m and b represent the line's slope (m) and the value of y when x is 0. The slope 'm' of any straight line is given by:

m =(y₂-y₁)/(x₋-x₁)

It is given that, the line that goes through the points (1.-5) and (4.1).

(x₁,y₁) = (1.-5)

(x₂,y₂)= (4.1)

m =(y₂-y₁)/(x₋-x₁)

m= (1- (-5)) / (4-1)

m= (1+5) / 3

m= 6/3

m= 2

Thus, the slope of the line that goes through the points (1.-5) and (4.1) will be 2. Option D is correct.

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Answer:

x=8.33

Step-by-step explanation:

3x : 10 = 5 : 2

3x/10 =5/2

3x= (5/2) multiple 10

=25

x=25/3

= 8.33

Answer:

47/20

Step-by-step explanation:

Answer:

B 47/20

Step-by-step explanation:

2.35/1

2.35×100=235

1×100=100

Reduce the fractions gives you 47/20

Answer:

D is the answer

Step-by-step explanation:

EDGE 2020

Mean is 5.2, median is 5 and S.D is 2.135

Given data 2, 4, 5, 7, 8

We need to find mean, Median and standard deviation

Mean = Sum of Observations/ Number of observations

Median=Middle most Number when arranged in a sequence

Mean = (2+4+5+7+8)/5=26/5=5.2

Median= 5

Standard deviation:

S.D=∑(x- bar)^2/N

To find sD

Subtract mean from each value

2-5.2=-3.2

4-5.2=-1.2

5-5.2=-0.2

7-5.2=1.8

8-5.2=2.8

Square each of those differences

-1.2*-1.2=1.44

-3.2*-3.2=10.24

-0.2*-0.2=0.04

1.8*1.8=3.24

2.8*2.8=7.84

Determine the average of those squared numbers to get the variance.

1.44 + 10.24 + 0.04 + 3.24 + 7.84 = 22.8

Average = 22.8/5=4.56

To find the standard deviation make square root of variance

2.135

Therefore Mean is 5.2, median is 5 and S.D is 2.135

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Answer:

A sequence

Step-by-step explanation:

A sequence is a collection of things arranged such that there is order or form in the collection. The components of a sequence are called elements or terms

The pattern in a sequence is achieved by the implementation of well defined rules, such that a term more than one space from a known term can be calculated

An example of a sequence is the following numbers;

1, 6, 11, 17, 22, 28,...

It can be observed that each subsequent term of the sequence is larger than the previous term by 5, therefore, 5 is known as the common difference, and the sequence is known as an arithmetic progression.

Answer:

n can be all numbers.

Step-by-step explanation:

Expand 3(n-2)+14

3n+8-8=3n+8-8

Simplify

3n=3n

Subtract 3n from each side

3n-3n=3n-3n

Simplify

0=0

All numbers work for n.

Hope this helped! :)

When I did the problem i got 2,445

Answer:

D

Step-by-step explanation:

Let's look at each option:

A. Distance =600 ✓

This is because the graph is a distance- time graph. To find the distance between her house and the post office, look at the y value of the point at the end of her journey. In this case, at t=24 mins, the y -value is 600 and thus the statement is correct.

B. ✓ correct

First 9 mins is from t=0 to t=9. Speed can be found by taking the gradient of the line of a distance- time graph.

Gradient can be found by taking rise/ run, which is also the difference in the y- coordinates divided by the difference in the x -coordinates.

[tex]\boxed{ gradient = \frac{y1 - y2}{x1 - x2} }[/tex]

[tex]gradient \\ = \frac{315}{9} \\ = 35[/tex]

Thus, the speed in the first 9 minutes is indeed 35m/min.

C. ✓correct

Since distance remained at 315m from t=9 to t=13mins, she stopped for that period of time.

Time stopped

= 13 -9

= 4 minutes

D. Incorrect

Average speed= total distance/ total time

Total distance= 600m

Total time= 24 mins

Thus, average speed

= 600 ÷24

= 25m/min

Answer:

n=-6

Step-by-step explanation:

2(n+5)=-2

2n+10=-2 (distribute the 2)

2n=-12 (subtract 10 from left, add it to right)

n=-6

Answer:6

Step-by-step explanation:

23=5x-7

Answer:

Point-slope form

y-b = m(x-a)

y- 725 = 12(x -50)

y -725 = 12x -600

  +725         +725

Slope Intercep form

y = mx + b

y = 12x + 125

Step-by-step explanation:

The slope- intercept form is y = 12x + 125 and the y- intercept is 125.

The slope-intercept form of a line is a way of writing the equation of a line so that the slope of the line and the y-intercept are easily identifiable.

Given:

y − 725 = 12( x −50 )

Now, arranging in the form of slope- intercept form

y- 725 = 12 x - 600

y = 12x - 600 + 725

y = 12x + 125

as, the slope intercept form is

y= mx + b

Hence, the y- intercept is  125

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Options :

A.) On average, the height of a child is 80% of the age of the child.

B.) The least-squares regression line of height versus age will have a slope of 0.8.

C.) The proportion of the variation in height that is explained by a regression on age is 0.64.

D.) The least-squares regression line will correctly predict height based on age 80% of the time.

E.) The least-squares regression line will correctly predict height based on age 64% of the time.

Answer:

C.) The proportion of the variation in height that is explained by a regression on age is 0.64.

Step-by-step explanation: from the scenario stated above, The correlation Coefficient R = 0.8, which shows the strength of relationship between age and height of children. From the value of correlation Coefficient Given, we can obtain the Coefficient of determination (R²) which gives the percentage of Variation which can be explained by the regression model.

Hence the Coefficient of determination (R²) = 0.8² = 0.64. Hence, the proportion of variation in height of children which can he due to age is 0.64 while 0.36 can be based on other factors.

Based on the line created from the data to the height of a child based on age the correct statement is given by: Option C.) The proportion of the variation in height that is explained by a regression on age is 0.64.

For that, we can use the coefficient of determination.

The coefficient of determination is square of correlation coefficient and thus, ranges from 0 to 1.

The coefficient of determination tells for unit variation in one variable will lead to how much variation in other variable and vice versa.

Let we take:

X = age of children of the sample considered

Y = height of children of the sample considered

Then, as it is given that:

[tex]r(X, Y) = 0.8[/tex]

Thus, the coefficient of determination is: [tex]r^2 = 0.8^2 = 0.64[/tex]

Thus, we get that 0.64 of the variation in the height is explained by the age of the children.

Thus, the true statement is:

Option C.) The proportion of the variation in height that is explained by a regression on age is 0.64.

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Answer:

45

Step-by-step explanation:

Answer:

Subtract 5 from both sides of the equation.

Step-by-step explanation:

Given the function:

[tex]5+|2x-4|=9[/tex]

First step to solve the above equation is to isolate the absolute value function i.e. one side(either Left Hand Side or Right Hand Side) of equation must contain the terms containing the absolute function only.

In Left Hand Side, we have the absolute value function added to 5.

If we subtract 5 from both the sides, we get:

[tex]5+|2x-4|-5=9-5\\\Rightarrow |2x-4|=4[/tex]

So, after "subtracting 5 from both sides of the equation", the absolute function gets isolated on the left hand side of the equation i.e. Left Hand Side contains the absolute value function only.

Answer:

I just finished the Quiz and the Correct answer is "Subtract 5 from both sides of the equation"

Step-by-step explanation:

Answer:

Slope Intercept

Step-by-step explanation:

Answer:

8

Step-by-step explanation:

[tex] \frac{80}{100} \times 10 = 8[/tex]

Answer:

Z=54 And Z+45=99

Step-by-step explanation:

Answer: Sorry um can you pick word or they give you some words?

Step-by-step explanation:

??

Answer: 42000

Step-by-step explanation:

10% =35000

1% =3500 × 2 = 7000 + 35000 42000

Answer:

tep-by-step explanation:

10% =35000

1% =3500 × 2 = 7000 + 35000 42000

Step-by-step explanation:

The answer is $3971. There are 209 members and each one gets one of each item. Add the costs of one of each item to get $19 per person. Then multiply $19 by 209 people and you get $3971 for everyone.

It is $17 for each person. ($10 + $3 + $2 + $2 = $17) So you do 17 x 209 = $3,553. So the answer is $3,553 dollars to pay for everyone.

Answer:

this aint no math question

Step-by-step explanation:

Answer/Step-by-step explanation:

Biased; How many serving of fruits and vegetable do you eat

~Learn with Lenvy~

Answer: x = 1/4

Step-by-step explanation:

Answer:

No

Step-by-step explanation:

Triangle inequality theorem : Any side of a triangle must be shorter than the other two sides added together.

Let's check if this theorem holds good with these side lengths

3< 9+5 (holds good)

5< 9+3 (holds good)

9< 5+3 (does not hold good)

So, these 3 sides cannot make a triangle

Answer:

$40.35

Step-by-step explanation:

the pole is 60% off so we only pay 40% of the pole

97*.40=38.80

38.80*.04=1.55 <---tax

38.80+1.55=40.35

Answer:

the slope is (-2,6)

i think correct me if i am wrong

Step-by-step explanation:

Answer:

slope is -1/3 or0.3333333333333

Step-by-step explanation:

rise/run