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
Ivan
3 years ago
8

Pls help! I don't get this!!

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
8 0

Answer:

5;   2n + 5 ≤ 15

6;   n/5 ≤ 15

7;   5n ≥ 15

Step-by-step explanation:

<em>"a number" means a variable denoted "n" </em>

"product" means to multiply

"quotient" means to divide

"The sum" means to add

<u>"is at least" means </u><u>greater than or equal to</u><u> or  ≥ </u>

<u>"is no greater than" means </u><u>less than or equal to</u><u> or ≤ </u>

<u>"Is at most" means </u><u>less than or equal to</u><u> or ≤</u>

You might be interested in
What is 2/3 of 800 dollars
omeli [17]
2/3 of 800

The word 'of' generally means multiply, so then

(2/3) * 800

800 is like 800/1, the fraction, and when multiplying fractions we multiply the top of the first and the second together, and multiply the bottom of the first and second together (numerator, denominator).

\frac{2}{3} * \frac{800}{1}&#10;=\frac{1600}{3}&#10;=533.333333333333

You don't really need the 800/1, but that might make it more clear exactly what's happening.

Edit: So I'm not sure if it's just me or that LaTeX formatting actually doesn't render. If not,

(2\3)*(800/1) = 1600/3 = 533.333333
5 0
3 years ago
Sophie is riding her bike home when she runs over a nail. It gets stuck to the tire of her bike but does not pop the tire. As sh
pochemuha

Answer:

a) The sinusoidal equation is;

The function is h = -24·cos[π(t )] + 24

The sketch of one full revolution is attached

b) The height of the nail at 0.8 seconds is 43.42 cm

Step-by-step explanation:

The sinusoidal equation that models the nails height can be given as follows;

y = A·cos[B(x - C)]+D

A = The amplitude = Half maximum height =  48/2 = 24 cm

The period = 2·π/B = Time to complete one oscillation = 2 seconds

∴ B = 2·π/2 = π

x = t  = Time

C = The horizontal shift

D = the vertical shift = 24 cm

y = The height of the nail = h

We have;

h = -24·cos[π(t - C)] + 24

At t = 0, h = 0, therefore, we have;

0 = -24·cos[π(0 - C)] + 24

24·cos[π(0 - C)] = 24

∴ cos[π(0 - C)] = 24/24 = 1

π(0 - C) = 0

C = 0

The function is h = -24·cos[π(t )] + 24

b) The height of the nail at 0.8 seconds is given as follows;

h = -24×cos[π(0.8)] + 24 =

h = 19.42 + 24 = 43.42 cm.

3 0
3 years ago
Help me plz I don’t understand
puteri [66]
Emma’s statement makes sense and Charles’ doesn’t, bcuz when you say 0.75 it should be 75 tenths, because it’s less than a whole number, but charles said 7 and 5 tenths, if it’s 7 and 5 tenths, it would be 7.5.
3 0
3 years ago
What is the distance between -7 and 21 on a number line?
pshichka [43]

Answer:

The distance is 28

5 0
3 years ago
Read 2 more answers
Alculate the product below and give VOur answer in Sciencnotato
aivan3 [116]

Answer:

1.64

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • A long distance runner does a first lap around a track in exactly 50 seconds. As she tires, each subsequent lap takes 20% longer
    6·1 answer
  • Plz help me with this problem
    14·2 answers
  • Which of the following is a factor of 6x^2+2x-21
    8·1 answer
  • Which is equivalent to (9y^2-4x)(9y^2+4x), and what type of special product is it?
    5·1 answer
  • James and Sylvie need to paint the line around the outside of a soccer field. To know how much paint to buy, they must find the
    14·1 answer
  • What is 9+ 10 i need the answer you pick the one you think is right.
    15·2 answers
  • What is the distance between (-3,7) and (-3,-4)
    5·1 answer
  • Help, Which show the correct way to factor 18 + 9?
    9·2 answers
  • URGENT Find Area of shapes. Need to complete by 11:30 to pass!
    12·1 answer
  • What is the unit rate for 1/4 gallon for every 3/10 mile
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!