Mathematics College

Emma is building a scale model of a jet airplane. The real airplane has a wingspan of 200 feet and a length of 240 feet. If Emma’s model has a wingspan of 30 centimeters, what is the length of the model ?

Answers

Answer 1

Answer:

Since it is a to-scale model,

the ratio of the wingspan to the length of both the airplanes must be equal

wingspan1 = 200 ft wingspan2 = 30 cm

length1 = 240 ft length2 = x cm

wingspan1 / length1 = wingspan2/length2

replacing the variables

200 / 240 = 30 / x

x = 30 * 240/200

x = 36 cm

Therefore, the length of Emma's airplane is 36 cm

Answer 2

Answer:

Step-by-step explanation:

Related Questions

a laptop computer is purchased at $1,100 after each year the resale value decreases by 30% what will the resale value be after 3 years

Answers

786 hope this helps

Answer:770

Step-by-step explanation:30% of 1100 is 330 330-1100=770

Chau rented a truck for one day. There was a base fee of $20.99, and there was an additional charge of 79 cents for each mile driven. Chau had to pay $130.80 when he returned the truck.

For how many miles did he drive the truck?

Answers

Answer:

Chau drove 139 miles

Step-by-step explanation:

Knowing how much Chau spent at the end makes the question much much easier. So what you want to do is take of the base fee ($20.99) off the final amount he had to pay.

$130.80 - $20.99 = $109.81

Now you divide $109.81 by the additional charge ($0.79)

Change the divisor (0.79) to a whole number by moving the decimal point 2 places to the right. Then move the decimal point in the dividend (109.81) the same, 2 places to the right.

We then have the equations:

10981 ÷ 79 = 139.000

and therefore:

109.81 ÷ 0.79 = 139.000

Chau drove 139 miles.

It’s D right? Let me know if I’m wrong.

Answers

Answer:

yes D is right... brainliest plz

The function f(x) = 2x – 3 is graphed below.
What is the y-intercept?

Answers

Answer:

ill give u the answer if u do 73 divided by 2628

Step-by-step explanation:

A lil help please T.I.A

Answers

Answer:

A. x=32 and x=o

YOUR WELCOME

Answer: A. x = 32 and x = 0

Explanation: Solve using the quadratic formula

Learn more: https://brainly.com/question/17177510

David earns 8$ per hour. He works 40 hours each week. How much does he earn in 6 weeks?

Answers

Answer:

$1920

Step-by-step explanation:

40×8= 320

320×6= 1920

Hope this helps!! :)

$1920

8x40x6

8=dollars
40=hours each week
6=weeks

PLEASE HELP ME OK SO WHAT IS X/5 + 6 <2

Answers

Answer:

x < -20

Step-by-step explanation:

[tex]\frac{x}{5}[/tex] + 6 < 2

subtract 6 from both sides of the equation

[tex]\frac{x}{5}[/tex] < 2 - 6

[tex]\frac{x}{5}[/tex] < -4

multiply both sides of the equation by 5

x < -4 * 5

x < -20

shopkeeper sells one machine for 990 re at a profit of 10% and another machine for 1960 at a loss of 2%

Answers

Complete question :

shopkeeper sells one machine for 990 re at a profit of 10% and another machine for 1960 at a loss of 2%. What is his gain or loss percent

Answer:

1.72%

Step-by-step explanation:

Given that :

MACHINE 1:

Sales price = 990

Profit percent = 10%

The cost price of the machine (x) :

10% profit of x :

(100 + 10)% of x = 990

110% of x = 990

1.1x = 990

x = 990/1.1

x = 900

MACHINE 2:

Sales price = 1960

Loss on sale = 2%

Cost price (x) :

(100 - 2)% of x = 1960

98% x = 1960

0.98x = 1960

x = 1960/0.98

x = 2000

Total amount realized from sale = (990 + 1960) = 2950

Total cost of production = (2000 + 900) = 2900

Profit Made = (2950 - 2900) = 50

% profit:

(Profit / cost of production) * 100

(50 / 2900) * 100%

0.0172413 * 100%

profit % = 1.72

The profit made is 50

Cost price of first machine will be:

= 100/(100 + 10) × 990

= 100/110 × 990

= 100 × 9

= 900

Cost price for second machine will be:

= (100 - 2) × x = 1960

= 98% × x = 1960

= 0.98x = 1960

x = 1960/0.98.

x = 2000

The total cost price = 900 + 2000 = 2900

Total selling price = 990 + 1960 = 2950

Therefore, profit will be:

= Selling price - Cost price .

= 2950 - 2900

= 50

Read related link on:

https://brainly.com/question/17698813

You have 12 balloons to blow up for a party. You blow up 13 of them, and your friend blows up 5 of them. What fraction of the balloons still need blowing up?

Answers

Answer:

None

Step-by-step explanation:

First of all you have 12 balloonas, and you blow up 13 of them and your friend blows up 5 of them but you only have 12. So you can’t find the right amoun.

Answer:

The Awnser is 1/4

Step-by-step explanation:

You never scale down to write a complex rate as a unit rate. True or false?

Answers

Answer:

True

Step-by-step explanation:

We should use simple units while doing any type of calculation, using simple units make it easy for other people to kn ow the calculation, on the contrary if we use complex units then it will make the calculation more complicated thereby increasing the chances of mistake.

Pls help i dont understand :( will give Brainliest + 25 Points

Answers

Answer:

Step-by-step explanation:

Find the slope using the formula [ y2-y1/x2-x1 ]

2-2/-5-3

0/-8

Find the y-intercept using slope-intercept form [ y = mx + b ] and (3, 2)

y = 0x + b

2 = 0(3) + b

2 = b

Put everything we know into the final form.

y = 0x + 2

y = 2

Best of Luck!

change in y/change in x

y2-y1/x2-x1

2-2/-5-3

0/-8 = 0

The slope is 0 - the answer is d

because when 0x = 0, then you are left with y and only y

when the equation is x=, then the equation is undefined

but, when an equation is y=, that the slope is 0

The square root of 144

Answers

Answer:

Step-by-step explanation:

a number increased by 15 is 114

Answers

Answer:

129

Step-by-step explanation:

all u have to do is add those two numbers

Answer:

114 - 15 = 99

Step-by-step explanation:

A "number" can be used as x since we don't know what it is at first- since it'd be x + 15 = 114 you can just do 114 - 15 to get the answer to x which is 99:)

Brenda has to remote controlled race cars painted red and blue. The red car travel 38 feet in two seconds. The blue car traveled 54 feet in four seconds. Which car was faster and by how much

Answers

The red car was faster by 11 feet
To make them even so we compare, divide 54 by 2
So,
: 27 feet in 2 seconds
: 38 feet in 2 seconds
Next, subtract
38 - 27 = 11
So, the red car was faster by 11 feet

if you gave someone an apple if you had 500 apples and then another 2x apples and then 3x apples next 456x how much left man?????????????????????????

Answers

Answer:

Step-by-step explanation:

Hope this helps!!!

Marjorie consumed 1.5 gallons of water in one day. How many milliliters are equal to 1.5 gallons, if 1 liter = 1,000 milliliters and 1 gallon = 3.785 liters? (3 points)

a.5.6775 milliliters
b.567.75 milliliters
c.5,677.5 milliliters
d.56,775 milliliters

Answers

Step-by-step explanation:

Do you wants to buy a bike for $180 he has $40 Dave mows lawns for $10 per lawn Write in equation that can be used to find eggs the number of lawns Dave needs mow to have enough money to the to buy his bike

Answers

Answer:

Dave needs to mow 14 lawns to have enough money to buy a bike.

Step-by-step explanation:

180-40=140, 140/10=14. Dave needs to mow 14 lawns to have enough to buy a bike.

Subtract 1 4/5 from 4 2/3 =?

Answers

Answer:

2.86666667

Step-by-step explanation:

Answer:

1 18/25

Step-by-step explanation:

4 2/3-1 4/5

=14/3-9/5

LCM is 15

=(70-27)/15

=43/25

what is the slope???

Answers

Rise is 4 and run is 5. The line is also going left so it will be negative. The answer is -4/5

whats 8 more than the product of X and 8

Answers

Answer:

8X +8

Step-by-step explanation:

I believe the answer is 8x+8

What is the domain of the function
f(x)=1x-3
-3 when the range is {-6. 0, 9}?

Answers

Answer:

D : { -3, 3, 12}

Step-by-step explanation:

I would suggest substituting the range for the function and solving for x like so.

i.e -6 = 1x-3, -6 + 3 = 1x -3 + 3, -3 = x, x = -3.

0 = 1x - 3, 0 + 3 = 1x - 3 + 3, 3 = x, x = 3.

9 = 1x - 3, 9 + 3 = 1x -3 + 3, 12 = x, x = 12

Free 100 points What is the unit rate for the ratio 78 laps ? 26 miles O A. 78 laps =78 26 miles : 26 1 lap 1 mile 39 laps 0 78 laps : 2 26 miles + 2 B. 13 miles C. 1 mile 26 miles - 26 78 laps :78 1 lap D. 78 laps - 26 26 miles + 26 3 laps 1 mile

Answers

Answer:

Step-by-step explanation:

It’s the answer I did the math

The unit rate for the ratio is 3 laps per miles.

Given that the ratio is 78 laps/26 miles.

What is the ratio?

The ratio is defined as the comparison of two quantities of the same units that indicates how much of one quantity is present in the other quantity.

Now,

Unit rate =78 laps/26 miles

Divide both the numerator and the denominator by 26.

So, 78 laps÷26 miles/26 miles÷26 miles

= 3 laps/miles

Therefore, the unit rate for the ratio is 3 laps per miles.

To learn more about the ratio visit:

brainly.com/question/13419413.

#SPJ2

During the summer, Abrielle is a cashier at a grocery store and Zane serves ice cream. To show their earnings, Abrielle makes a graph and Zane makes a table. Which statement is true?

Answers

Answer:

The slope of Zane is 18.50/2 = 9.25

Subtract both slopes to find the true statement.

10.5 - 9.25 = 1.25

The correct statement is:

Abrielle earns $1.25 more than Zane.

Answer:

what the person on the top said. Their right.

Marissa is choosing a four-digit PIN for her ATM card. The first digit must be a digit from 1 through 9. For the other three digits, she can choose any combination of digits 0 through 9, but may not repeat a digit. Which shows part of the sample space for Marissa’s PIN?

Answers

Answer: the answer is C

Step-by-step explanation:

i did it

What do numbers have a difference of 8

Answers

Answer:

20-12=8

here it is the difference is 8.

general admission to the fair is 10.00. each ride costs 4.75. if lisa has 75.00 to spend at the fair, what method can be used to find out how many rides she can go on

Answers

Answer:

well the answer is 13

Step-by-step explanation:

The way you can figure this out is subtract 10 from 75 to get 65 and then you divide 65 by 4.75 to get 13 with a huge decimal but you just have 13 because you cant go for part of a ride.

PLEASE PUT BRAINLIEST.

Answer:

Step-by-step explanation:

75.00-10=65

65 divide 4.50=14

forty percent of the first 20 whole numbers are prime. how many of the first 20 whole numbers are prime

Answers

Answer:

there are 8 prime numbers before 20

Step-by-step explanation:

forty percent of 20 is:

40% × 20=

[tex]\frac{40}{100}[/tex]×20= 8

so the number of whole prime numbers before 20 are 8.

They are:

2,3,5,7,11,13,17,19.

Answer:

Step-by-step explanation:

Which of the following statement is false? 8 < 8 2>8 2<8 2<8 2<8

Answers

Answer:

8<8

2>8

Step-by-step explanation:

yw:))

A painting was sold for 179.4 million dollars, Write this amount in scientific notation

Answers

Answer:

[tex]1.794 \times {10}^{2} [/tex]

(in scientific notation)

1.794 x 10^2 is it's scientific notation form

I need help with this please

Answers

Answer:

idk

Step-by-step explanation:

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