A plane descends 1000 ft while flying
2.7 mi. What is the angle of descent?

Answer:

33/19

Step-by-step explanation:

slope = [tex](-11-22)/(3-22) = -33/-19 = 33/19[/tex]

Answer:

The speed of the car is 50 mph.

The speed of the plane is 150 mph.

Driving time = 185/50 = 3.7 hours

Flying time = 645/150 = 4.3 hours

Step-by-step explanation:

R be the speed of the car.

t is the driving time.

185 = R* t

645 = (3R)*(8-t) <---  the plane is 3 times as fast; the total time is 8 hours, so 8-t hours is spent flying

645 = 24R - 3rt <--- distributive

645 = 24R - 3(185)  <--- substitutes rt = 185

645 = 24R - 555

1200 = 24R

R = 50

Answer:

51

1−2+3−4+5−.....+101

=(1+3+5+.....+101)−(2+4+6+.....+100)

=(1+3+5+.....+101)−2(1+2+3+.....+50)

=(51)

2

−2(

2

50(50+1)

)

=2601−2×1275

=2601−2550

=51

Answer:

x = 2, -1

Step-by-step explanation:

Move all terms to the left side and set equal to zero Then set each factor equal to zero

Answer:46, f(n)=2x+16

Step-by-step explanation:

1=0+18

2=2+18

3=4+18

4=6+18

f(n)=2x+16

f(15)=30+16=46

Answer:

V=7982.4 in

Step-by-step explanation:

V=4/3pi*r^3

V=4/3pi*12.4^3

V=4/3pi*1906.62

V=7626.48/3pi

V=2542.16pi

V=2542.16*3.14

V=7982.4

Answer:

x=3

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Answer:

The circumference of the blue circle is about  

62.8 cm.

The circumference of the orange circle is about  

31.4 cm.

Step-by-step explanation:

First the blue circle, it shows that there are 5 cm on the outside of the orange circle so the would be 5+5=10, then you add the orange circle to the 10 cm, that would give you 20 cm. Then you multiply 20 cm by pi (3.14) which will give you your answer 62.8. Do the same thing for the orange circle, 5+5=10 so 10 multiplied by pi (3.14) is 31.4

bye bestie

Answer:

50% of 108: 54

25% of 108: 27

75% of 108:  81

Step-by-step explanation:

Hope this helps have a nice day

Answer:

50% : 54

25% : 27

75% : 81

Step-by-step explanation:

If you multiply by the decimal version of the precentages, you will get the remaining amount of how much it is. so to find 50% of 108, you do 108 * 0.50 and it will give you the 50% of 108.

Answer:

n= 18

Step-by-step explanation:

:)

Answer:

18

Step-by-step explanation:

[tex]\frac{2}{3} *n=12\\\frac{2}{3} *n/\frac{2}{3} =12/\frac{2}{3} \\n=18[/tex]

Answer:sorry that’s math not art

Step-by-step explanation: math is not art therefore I can’t help u

Answer:

C) 4

Step-by-step explanation:

1 + x/2 = 3

x/2 = 2

x = 4

The value of x is 4.

Start with 4. Half of 4 is 2. Add 1. You get 3. 4 makes the problem work, so 4 is the answer.

Answer: C) 4

Answer:

2/3

Step-by-step explanation:

I think that's the answer.

Answer:

1944

Step-by-step explanation:

I used the pyramid formula and used 18 as the bases and heights since it’s a perfect triangular pyramid.

Answer:

25.65

Step-by-step explanation:

rounded to tens: 30,190, 5,010 and 20

rounded to tenths: 62.6, 1.1, 0.0, and 270.6

rounded to hundredths: 0.12, and 98.51

The value of P(X ≥ 93) when X pertains a normal distribution with mean of 79 and standard deviation of 7 is 0.0228

If we've got a normal distribution, then we can convert it to standard normal distribution and its values will give us the z score.

If we have

[tex]X \sim N(\mu, \sigma)[/tex]

(X is following normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex])

then it can be converted to standard normal distribution as

[tex]Z = \dfrac{X - \mu}{\sigma}, \\\\Z \sim N(0,1)[/tex]

(Know the fact that in continuous distribution, probability of a single point is 0, so we can write

[tex]P(Z \leq z) = P(Z < z) )[/tex]

Also, know that if we look for Z = z in z tables, the p value we get is

[tex]P(Z \leq z) = \rm p \: value[/tex]

For this case, we're specified that:

X pertains a normal distribution with mean of 79 and standard deviation of 7, symbolically, we have:

[tex]X \sim N(\mu = 79, \sigma = 7)[/tex]
The needed probability is P(X ≥ 93)

Converting X to standard normal variate makes us evaluate this probabiilty as:

[tex]Z = \dfrac{X -\mu}{\sigma} \sim N(0,1)\\\\P(X \geq 93) = 1 - P(X < 93)\\\\P(X \geq 93) = 1 - P\left (Z < \dfrac{93-79}{7}\right)\\\\P(X \geq 93) = 1 - P(Z < 2)[/tex]

The p-value for Z = 2 (from the z-tables) is found to be 0.9772

Thus, we get:

[tex]P(X \geq 93) =1 - P(Z < 2) = 1 - P(Z \leq 2) = 1 - 0.9772\\P(X \geq 93) = 0.0228[/tex]

Learn more about standard normal distribution here:

https://brainly.com/question/10984889

Answer:

Time taken for cover 1 miles = 0.16 hour (Approx.)

Step-by-step explanation:

Given:

Total distance cover by Duncan = 26.2 miles

Time taken by Duncan = 4 hours 10 minutes

Find:

Time taken for cover 1 miles

Computation:

Time taken by Duncan = 4 hours 10 minutes

Time taken by Duncan = 4 + 0.167 hour

Time taken by Duncan = 4.167 hour

Speed = Distance / Time

Speed = 26.2 / 4.167

Speed = 6.28 miles/hour (Approx.)

So,

Time taken for cover 1 miles = 1/6.28

Time taken for cover 1 miles = 0.16 hour (Approx.)

Answer:

18 sq meters

Step-by-step explanation:

A = 1/2(3)(9 + 3)

A = 1/2(3)(12)

A = 18

Answer: 1,431

Step-by-step explanation:

split the thing into two rectangular prisms

small prism dimensions: 18 x 2 x 3

multiply the dimensions to get 108

large prism dimensions: 7 x 21 x 9

multiply the dimensions to get 1,323

add 1,323 and 108 together to get 1,431

Answer:

Circumference: 81.681 in; Area: 530.929 in

Step-by-step explanation:

To find circumference we use the formula pi x diameter. Which in this case is pi x 26 in, or approximately 81.681 in.

For the area, we use pi x r^2. r = 1/2 d, so r = 13in. Therefore, the area is equal to 169 x pi in, which is about 530.929 in.

Answer:

answer is C

the slope is 3 and the intercept is (0,2) which is 2

Answer:

i converted θ to radians, then put that and the length of the arc into the formula shown.

Answer:

Will be reveled in part B.

Step-by-step Part A

Using O P N Chart for the profits of $500

O P N represent Original, Part Percent and New original.

O $500 ║100%

P   $410║-18%

N $90   ║82%

I got $410 which is my part percent by subtracting the original by the New original. (500 - 90 = 410)

Now to solve for the part percent and New original which we will know how much money would be given to charity?

Solving for part percent

Part percent x org = Part

(X) x 500 = 90

500x = 90

500      500

x = 0.18 =  18%.

If they sell $500  worth of calculators and donates $90 to charity they are left with $410 and they gave the charity 82%

Part B:

O: $90   ║ 100%

P:   $110  ║-18%

N: $200  ║82%

So this tells me that the charity recived $110.