I’m confused with this question.

Answer:

The family traveled at 45 miles per hour.

Step-by-step explanation:

The minimum average score Ethan can earn on his fifth and final test is option (D) 60% is the correct answer.

An average of a list of data is the expression of the central value(mean) of a set of data. Average is calculated by adding quantities together and dividing the total by the number of quantities.

For the given situation,

The scores for 4 exams are 68%,72%, 85%, and 90%.

Let the score for the fifth test be x.

Formula for the average,

[tex]A = \frac{Sum of individual scores}{Total number of tests}[/tex]

⇒ [tex]75=\frac{68+72+85+90+x}{5}[/tex]

⇒ [tex]375=315+x[/tex]

⇒ [tex]x=60[/tex]

Hence we can conclude that the minimum average score Ethan can earn on his fifth and final test is option (D) 60% is the correct answer.

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The option C. Driver's License is not necessary to book a flight.

Driver's License is an official document given to a person who is permitted to drive vehicle on the road.

This is usually given after certain tests including Physical driving and other general knowledge of driving.

Now, when we book a flight, credit card can be used to book a flight, but not necessary.

But there is a chance than you can use the credit card.

Arrival city is necessary when you book a flight because then only other procedures will follow.

Similarly, date of travel is also required in order to book the flight on a particular day.

So the least necessary document is Driver's License.

Hence Driver's License is not necessary to book a flight.

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Answer:

14x+3

Step-by-step explanation:

The given expression is as follows :

4x + 3(2x +1) + 4x

We need to find the equivalent expression for the above.

So,

4x + 6x +3 + 4x

Adding x terms,

14x+3

Hence, the correct equivalent expression is 14x+3.

Answer:

5 units

Step-by-step explanation:

Answer:

B: 15

Step-by-step explanation:

22 x 3 = 66, so you have to multiply 5 by 3,

5 x 3 = 15, and there is your answer!

Answer:

your answer is B

Step-by-step explanation:

If you multiply 5x3 you get 15, and if you multiply 22 is 3 you get 66.

5:22 is just a simplified version of 15:66

Answer:

d=√((x_2-x_1)²+(y_2-y_1)²)

d=√((2-(-4))²+(1-(-3))²)

d=√(6²+4²)

d=√36+16

d=√52

d=7.21110255...

d=7.2

Step-by-step explanation:

d=7.2

The distance between the points on the coordinate plane is 7.2 units.

Coordinate geometry is the study of geometry using the coordinate points.  It provides a link between geometry and algebra through line graphs and curves.

For the given situation,

The points are (x1, y1) be (–4, –3) and (x2, y2) be (2, 1)

The formula for the distance between points,

[tex]d=\sqrt{(x2-x1)^{2}+(y2-y1)^{2} }[/tex]

On substituting the above points,

⇒ [tex]d=\sqrt{(2-(-4))^{2}+(1-(-3))^{2} }[/tex]

⇒ [tex]d=\sqrt{6^{2}+4^{2} }[/tex]

⇒ [tex]d=\sqrt{52}[/tex]

⇒ [tex]d=7.211[/tex] ≈ [tex]7.2[/tex]

Hence we can conclude that the distance between the points on the coordinate plane is 7.2 units.

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Answer:

Approximate difference between 1 mile and 2 km in meters = 390.66meters

Step-by-step explanation:

I mile =1609.34meters

also 1000m = 1km

therefore 2km = 2 x 1000= 2000m

Approximate difference = 2000m - 1609.34m

=390.66 meters.

 Approximate difference between 1 mile and 2 km in meters = 390.66meters

Answer:

144

Step-by-step explanation:

to find the missing angle in side of the triangle we subtract 111 and 33 from 180

180-111-33=36

so the angle inside of the triangle equals 36 to find the one on the outside of the triangle we subtract 36 from 180

180-36 which equals 144 so 1=144

Answer:

C: $30/hr

Step-by-step explanation:

In order to find the rate per hour you must divide: 150 ÷ 5

Which will give you 30

Also if you took away the 0 in "150" then it would be like says "15 ÷ 5" which is 3 but then you have to add the zero back making it 30

Therefore your overall answer is going to be C, $30/hr

Answer:

54

Step-by-step explanation:

all you have to do is times 18 by 3

Answer:

I think 5.

Step-by-step explanation:

You'd do this backwards.

51 ÷ 4 = 12.75

12.75 - 7 = 5.75.

You could either round that to 6 or keep it at 5.

Answer:

I believe it is 5 or 6. the answer I got was 5.75 so I am leaning towards 6 but I would let someone else answer.

Step-by-step explanation:

ok so we have 51 so then you would divide by 4 and subtract 7.

Answer:

15

Step-by-step explanation:

25 - 2t

t = 5

25 - 2(5)

25 - 10

= 15

Answer:

15

Step-by-step explanation:

The equation with the value t substituted for 5 will look like 25 - (2)5

first you multiply 2 and 5 because pemdas.

The equation Is now 25-10

25-10 is 15

The answer is 15

Answer:

The answer should be [tex]9*10^{16}[/tex]

Step-by-step explanation:

Answer:

yepp

Step-by-step explanation:

okkkkkkkkkkkkkkk

Answer:

680kg

Step-by-step explanation:

The average weight of ten bulls is 500kg and the standard deviation of the weight is 30kg. What would be the weight of a bull that is 6 standard deviations above the mean weight

The formula to solve for the weight that is 6 standard deviation above the mean weight =

μ + 6σ = w

Where

μ = Mean weight = 500kg

σ = Standard deviation = 30kg

Hence:

w = 500kg + 6(30kg)

w = 500kg + 180kg

w = 680kg

Therefore, the weight of a bull that is 6 standard deviations above the mean weight is 680 kg

Using the normal distribution, it is found that the weight of a bull that is 6 standard deviations above the mean weight is of 680 kg.

In a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

In this problem, the mean and the standard deviation are, respectively, of [tex]\mu = 500[/tex] and of [tex]\sigma = 30[/tex].

The weight of a bull that is 6 standard deviations above the mean weight is X when Z = 6, hence:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]6 = \frac{X - 500}{30}[/tex]

[tex]X - 500 = 6 \times 30[/tex]

[tex]X = 680[/tex]

The weight of a bull that is 6 standard deviations above the mean weight is of 680 kg.

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Answer:

1.298701298701

Step-by-step explanation:

hope this helped

Answer:

1.37741046832

Step-by-step explanation:

Answer:

Slope: 3.083333333

Step-by-step explanation:

Answer:

angle ADB = 41 degrees

angle ABD = 90 degrees

angle AFE = 70 degrees

angle ACE = 31 degrees

Step-by-step explanation:

angle ADB = 41 degrees because minor arc AB = 82 degrees and it's inscribed angle is 1/2 of it's arc.

angle ABD = 90 degrees because arc AED = 180 degrees and inscribed angles are equal to 1/2 of the arc.

arc ABD = 180

arc ABE = arc ABD + 70 degrees = 250 degrees

minor arc AE = 360 degrees-250 degrees = 110 degrees

angle AFE = 1/2 (250-110) = 70 degrees

angle ACE = 1/2(110-48) = 31 degrees

Answer:

I don't get it send a pic of the question Please I will see if I can help

Answer:

the answer is 2 or 2/1 hope this helps

Answer:

In fraction form, the slope is 2/1.

Or, the slope is just 2.

Step-by-step explanation:

Using the equation:

m =  

y2 - y1  /

x2 - x1

Plug in the x and y points and solve.

note: m = slope in slope intercept form, y - mx + b

y2 = 14     y1 = 18

x2 = -16     x1 = -14

14 - 18 / -16 -(-14)

-4 / -2

Simplified: -2 / -1

In fraction form, the slope is -2 / -1, or 2/1 because either way works.

Or, the slope is just 2.

Hope this helps! If you have any additional questions, please don't hesitate to ask me or your teacher to be sure you master the subject. Stay safe, and please mark brainliest! :)

Answer:

14-8=6/300=50 thats your answer

Answer:

A)

Decay

B)

Initial value is 5.

C)

The decay factor is 0.75.

D)

75%

Step-by-step explanation:

An exponential function is given by:

[tex]f(x)=a(r)^x[/tex]

Where a is the initial value and r is the rate.

We have the function:

[tex]y=5(1/4)^x[/tex]

So, a = 5 and r = 1/4.

A)

Remember the guidelines:

Our rate is 1/4 or 0.25.

It is less than 1, so our function is exponential decay.

B)

The initial value is the value in front of our rate.

So, our initial value in this case is 5.

C)

The decay factor will be 1 - r, where r is our rate.

Since our rate is 0.25, our decay factor is 1 - 0.25 = 0.75.

So, we are decaying by a factor of 0.75.

D)

To convert a decimal to a percent, we move the decimal dot two places to the rght and add a percent sign.

So, 0.75 will be 75.0 % or smply 75%.

It is a 75% decay.

Answer:

Step-by-step explanation:

13x + 47 = 151

subtract 47 from both sides

13x = 104

divide by 13 on both sides

x = 8

Answer:

$1.50

Step-by-step explanation:

okay so its asking whats the cost of one notebook so if you are gonna add you will get 10.30

Answer: 63 mph

Step-by-step explanation:

Speed is determined by dividing the distance traveled by the time taken to travel it.

Speed = Distance of highway / Time spent on highway

= 157.5 / 2.5

= 63 miles per hour