1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Hoochie [10]
3 years ago
8

Get this right and you get brainliest

Mathematics
1 answer:
blagie [28]3 years ago
5 0

Answer:

2 1/3 planes

Step-by-step explanation:

3.5 lego planes / 60 minutes

So fraction =

3.5/60

In 40 minutes he will build x planes

So the fraction equation is:

3.5/60 = x/40

Solve:

Cross multiply =

140 = 60x

x = 2 1/3

2 1/3 planes

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

You might be interested in
The equation y= 39 4x describes the number of miles y that an airplane travels in x minutes. What is the constant speed of the a
7nadin3 [17]
Speed: distance traveled in a given time

y=distance ( given in miles).
x = time (given in minutes)

Speed = y/x

y = 39.4x

By rearranging this y/x =39.4 ( is the constant speed). don’t forget this is mile/minutes

There are 4 x 60 minutes in 4 hours

Hence, you are asked the distance (y) in 240 min

y = 39.4x
y = 39.4 miles/minutes x (240) minutes

y = 9456 miles
7 0
3 years ago
The population of a certain species of fish has a relative growth rate of 1.1% per year. It is estimated that the population in
Juliette [100K]

Answer:

(a) n(t) = P(0)*e^(0.010939940t)

(b) 12,674,681 (nearest unit)

(c) 14 years (nearest year)

Step-by-step explanation:

rate = 1.1% / year = 1.011

(a)

P(0) = 12,000,000  = population in 2010

In compound interest format, after t years

P(t) = P(0)* (1.011)^t

Given format = P(0)* e^(rt)

therefore

e^(rt) = 1.011^t       use law of exponents

(e^r)^t = 1.011^t

e^r = 1.011

r = log_e(1.011) = 0.010939940   (to 9 decimal places)

required formula is

n(t) = P(0)*e^(0.010939940t)

(b)

in 2015,

P(0)=12000000, n = 5 (years after 2010)

n(5) = 12000000*e^( 0.010939940 * 5 ) = 12,674,680.6 = 12,674,681 (nearest unit)

(c)

to reach 14 million, we equate

n(t) = 14,000,000

12,000,000 *e^(0.010939940*t) = 14,000,000

e^(0.010939940*t) = 14000000/12000000 = 7/6

take log on both sides

0.010939940*t = log(7/6)

t = log(7/6) / 0.010939940 = 14.091 years = 14 years to the nearest year.

See graph attached.  Y-axis is in millions, x-axis is in years.

4 0
3 years ago
Evaluate 5+ when each number is placed in the box
polet [3.4K]

Answer:

6. 8

7. 10

8. 29

Step-by-step explanation:

6. 3+5

7. 5+5

8. 24+5

4 0
3 years ago
If ΔABC ≅ ΔEDF where the coordinates of A(0, 2), B(2, 4), and C(2, −1), what is the measure of DF?
allsm [11]

Answer:

C. 5

Step-by-step explanation:

Since Triangle ABC is congruent to EDF it mean that the sides are the same so the length of BC is congruent to the length of DF:

distance formula:

d = √(x2 - x1)^2 + (y2 - y1)^2

d = √(2 - 2)^2 + (-1 - 4)^2

d = √(0)^2 + (-5)^2

d = √0 + 25

d = √25

d = 5

4 0
3 years ago
Read 2 more answers
Simple probability ....what is P(shaded sector)
Ludmilka [50]
The probability of landing on a shaded sector is 2/5.
6 0
3 years ago
Read 2 more answers
Other questions:
  • Cindy went to the carnival with her family. She paid $8 for every 10 rides she rode. She spent a total of $25 on rides. Which eq
    7·1 answer
  • Who knows this please!!!
    13·1 answer
  • Consider the graph of quadrilateral ABCD.
    11·2 answers
  • What is the five number summary of the following data set? Write the numbers separated by commas. 45, 8, 51, 47, 31, 45, 12, 55,
    14·1 answer
  • Find a general solution to the differential equation â6yâ²=1+x+y+xy by solving the equation and then applying the initial condit
    8·1 answer
  • A clothing article was originally priced at $120. It was reduced for a sale to $90. What fractional part of the original price w
    9·1 answer
  • Please help I dont get it​
    5·1 answer
  • Please help me solve this!!!!
    12·2 answers
  • Don't answer this question
    8·1 answer
  • Can someone look at this image?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!