Mathematics High School



A robin can fly 10 miles per hour faster than a blue jay. It takes a robin 1 1/2 hours to fly 45 miles.

How many hours will it take a blue jay to fly that same distance?

Answers

Answer 1

Answer: [tex]2\dfrac14\text{ hours}[/tex]

Step-by-step explanation:

Given:  It takes a robin [tex]1\dfrac12[/tex] hours to fly 45 miles.

[tex]1\dfrac12=\dfrac32[/tex]

Speed of robin= [tex]\dfrac{distance}{time}=\dfrac{45}{\dfrac32}[/tex]

[tex]\dfrac{45}{3}\times2= 15\times2= 30\text{ miles per hour}[/tex]

A robin can fly 10 miles per hour faster than a blue jay. It

Speed of Blue jay = Speed of robin - 10 miles per hour

= 30 miles per hour - 10 miles per hour

= 20 miles per hour

Time taken to cover 45 miles = [tex]\dfrac{45}{20}=\dfrac{9}{4}=2\dfrac14\text{ hours}[/tex]

Hence, it will take [tex]2\dfrac14\text{ hours}[/tex]  by a blue jay to fly that same distance.

Related Questions

Which expression can you simplify by combining like terms?




6d2+5cd−3dc+8

12c2−8d2c+3dc+4

7d2−3c2+6d−c

16c2+8cd+7c−8d

Answers

Answer:

[tex]6 {d}^{2} + 5cd - 3dc + 8[/tex]

Step-by-step explanation:

b/c we can substructure 5cd and 3dc b/c it doesn't matter if the place of cd and dc change. what I mean if 5 ×3=15 and it is the same with 3×5=15 both of the product are the same but, if it is - and ÷ it wil be wrong for example 5-3=2 but 3-5= -2

if is helpful ❤❤

THANK YOU

In this hanger, the weight of the triangle is x and the weight of the square is y.

Answers

Answer:

y = 4

Step-by-step explanation:

4y 1x  

3x 1y

1x=6

18

6+16 =22

18+4= 22

Is this a proportional relationship?

Answers

Yeah

It’s is a Proportional Relationship

Are x+2 (7-x) and x+20-3x equivalent?

Answers

Answer:

No

Step-by-step explanation:

Johnny and Mark's combined age is 26 years old. Johnny is two years older than twice Mark's age. Write a system of equations and solve for each of their ages

Answers

m * 2 + 2 = j

Answer:

Mark is 8

Johnny is 18

Step-by-step explanation:

m * 2 = j - 2

26 - 2 = 24

24 / 3 = 8

8 * 2 + 2 = 18

Please help me thanks please

Answers

Answer:

1200 cubic units

Step-by-step explanation:

If you split the shape into two parts, you can find the volume of each and solve. For the first part, you do 10x8x6 to get 480. For the second part you do 12x10x6 to get 720. Add 480+720 to get 1200.

Hope it helps!

A student has a container with a volume of 0.5 liter. He estimates the volume to be 0.4 liter. By what percent is the​ student's estimate​ off?

Answers

Answer:

20

Step-by-step explanation:

0.5-0.4=0.1,0.1/0.5×100= 20

The students's estimation is 80%.

What is a percentage?

A ratio or value that may be stated as a fraction of 100 is called a percentage. And it is represented by the symbol '%'.

Given that a student has a container with a volume of 0.5 liter.

He estimates the volume to be 0.4 liter.

Now to find the percentage of estimation,

estimated volume = correct volume × required percentage / 100

0.4 = 0.5 × required percentage / 100

Required percentage = 0.4 × 100 / 0.5

Required percentage = 0.4 × 100 / 0.5

Required percentage = 80%

Therefore, the students's estimation is 80%.

To learn more about the percentage;

https://brainly.com/question/24159063

#SPJ2

r+11=5
what is r? in order to get 5

Answers

Answer:

6 lol

Step-by-step explanation:

Answer:

r = -6

Step-by-step explanation:

r + 11 = 5 which is also 5 - 11 = r

So, r = -6

Write an equation for the nth term of the following arithmetic sequence. 30, 26, 22, 18, . . . (WILL GIVE BRAINLEST)

Answers

It’s minus 4 so I’d say 30,26,22,18,14,10,4 than that’s it hope this helps :)

Calculate |m| if m=21-72i. Round off answer to nearest hundred

Answers

Answer:

n6666667900087474455

What is the y-intercept?

(0, 8)
(8, 0)
2/1
4/1

Answers

Answer:

8 and 0

Step-by-step explanation:

Solving Inequalities, HELP PLEASE.!!

Answers

Answer:

Group 1. x>-2

Group 2.x≥-2

Group 3.x<-2

Group 4.x≤-2

The answers are going to be group 1 x>-2
Group 2.x>-2 group 3.x<-2 group 4.x_<-2

Mrs.Walker would like to give each of her 32 students no less than three stickers. How many stickers must she have
​

Answers

Answer:

Mrs. Walker will need at least 96 stickers in order to give each of her students at least 3 stickers each.

Step-by-step explanation:

32*3=96.

96 is the minimum

The Invisible Hand promotes
A. marketplace inflation
B. marketplace competition
C. marketplace monopolies
D. marketplace shortages​

Answers

The answer to this is D

plz help me out with this

Answers

Answer:

B and a great deal on a spring break and a good time to get answer for the spread of Islam in the Horn of the following elements has your examination and your

find the equation of the line shown​

Answers

Answer:

[tex]y = - 1x + 9[/tex]

Step-by-step explanation:

Remmeber:

[tex]Slope = \frac{rise}{run} [/tex]

The total cost of a pizza and 3 drinks is $19. The price of the pizza is $10 and each drink is the same price, d.

Answers

Answer:

each of the drinks are $3

Step-by-step explanation:

Answer: 10 d d d / 19

D = 3

Step-by-step explanation:

Two fair dice are rolled. What is the probability of rolling:(a)double 6 (b)double 3(c) one dice 5, the other dice 6(d) a total of 10(e) a total of 3 or less

Answers

Is there a picture provided?

is 6z-2z+4=4+2z+6z equivalent

Answers

Answer:

Step-by-step explanation:

0

Answer:

Yes

Step-by-step explanation:

Lol

Plz help
Suppose y varies directly with x, and y = 13 when x = 4. What direct variation equation relates x and y? What is the value of y when x = –6?

Answers

Answer:

direct variation equation: y = 13/4x

y = -19.5 when x = -6

Step-by-step explanation:

y = kx  where 'k' is the constant to proportionality

13 = 4k

k = 13/4

equation:  y = 13/4x

plug in -6 for 'x' to find value of 'y'

y = 13/4(-6)

y = -19 1/2

A flagpole casts a shadow of 25.5 meters long. Tim stands at a distance of 15.4 meters from the base of the flagpole, such that the end of Tim's shadow meets the end of the flagpole's shadow. If Tim is 2.3 meters tall, determine and state the height of the flagpole to the nearest tenth of a meter.

Answers

Answer:

5.8 meters

Step-by-step explanation:

The formula to calculate this is given as:

Height/ Shadow

Shadow of the pole = 25.5 m

Height of the pole = x m

Tim's shadow = Height of the pole - Tim's distance

25.5 m - 15.4 m = 10.1 m

Tim's height = 2.3 m

Hence:

x/25.5 = 2.3/10.1

Cross Multiply

10.1x = 25.5 × 2.3

x = 25.5 × 2.3/10.1

x = 5.8069306931 m

Approximately = 5.8m

Hence, the height of the flagpole = 5.8m

The diameter of a circle measures 26 yd. What is the circumference of the circle?
Use 3.14 for it, and do not round your answer. Be sure to include the correct unit in your answer.
0
26 yd

Answers

Answer:

26 times 3.14=81.64

Step-by-step explanation:

The neon lights on the dance club sign blink 240 times in 2 minutes. How many times does the neon sign blink in 10 minutes?

Answers

To answer this, you can set up a ratio.

240:2
? :10

2 x 5 = 10
240 x 5 = ?
240 x 5 = 1,200

The neon sign would blink 1,200 times in 10 minutes. Hopes this helps!

Answer:

it blinks 1,200 times

Step-by-step explanation:

Determine the domain of this graph

Answers

Answer:

Domain: (-1, 7)

Step-by-step explanation:

Your x-values are your domain and your y-values are your range.  In this case, the function ranges from -1 to 7.

maria pays 15.20 for 5.3 pounds of candy what is the price per pound of candy

Answers

Answer:

$2.90 per pound

Step-by-step explanation:

You must divide the total from the amount bought.

15.20/5.3 = 2.8679245283

Next, you round the number by the first 2 decimals.

2.86 = 2.90 - The answer

Check if you need to make sure the answer is correct

-3w-4=3+3

w=?????????

Answers

Answer:

-3.33333

Step-by-step explanation:

-3w - 4 = 3 + 3

Combine like terms

-3w - 4 = 6

Add 4 on both sides

-3w - 4 + 4 = 6 + 4

-3w = 10

Divide by -1 to isolate the variable

-3w/-3 = 10/-3

w = - 3.33333 ( the 3 keeps repeating)

Write an equation of the line that passes through the given point and has the given slope. (4, 2); slope 1/2​

Answers

Answer:

y = 1/2x

Step-by-step explanation:

Substitute the given information into the equation y = mx + b

Your goal is to find what b is

Obviously, the point given --> (4, 2) is the x and y.

The m is the slope (1/2)

Work down below!

1. For each statement below, mark if it's TRUE or FALSE.

Answers

Answer:

1 is True 2 is False 3 is False 4 is True 5 is False

Step-by-step explanation:

please help with this.

Answers

Answer:

I don't know how sorry àaaaaaaaaaaaaàaàaaaaaàaaà

Kamilah noticed that three different-sized boxes of the same cookies were on sale at a grocery store. The 0.425 kg box was on sale for $3.59, the 0.74 kg box was on sale for $4.88, and the 0.95 kg box was on sale for $7.29. Which box of cookies was the best buy? Explain your reasoning. To get you started: 3.59 : 0.425 1kg/ 0.425kg= 2.35 0.425 x 2.35= 1kg $3.59 x 2.35= $8.44 3.59 : 0.425 -> $8.44 : 1kg

Answers

Answer:

The best buy is the 0.74 kg box

Step-by-step explanation:

Kamilah noticed that three different-sized boxes of the same cookies were on sale at a grocery store.

We find the unit price for 1 box

a) The 0.425 kg box was on sale for $3.59

= 1 kg = $3.25/0.425

= $7.6470588235

b) the 0.74 kg box was on sale for $4.88,

1 kg = $4.88/0.7$

= $6.5945945946

c) the 0.95 kg box was on sale for $7.29.

1 kg = $7.29/0.95

= $7.6736842105

Which box of cookies was the best buy?

The best buy is the 0.74kg box because 1kg of this box has a lesser price compared to the others.

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