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
barxatty [35]
3 years ago
9

Please help!! Andy is 2 year older than jeff. in 5 years the sum of their ages will be 40 years . find their ages now .... provi

de a complete algebraic solution
Mathematics
1 answer:
ANTONII [103]3 years ago
8 0
Andy's age            = x
Jeff's age              = x-2
Andy's age in five years            = x+5
Jeff's age in five years              = x-2+5
The sum of their ages in five years        = x+5 + x-2+5

                                       x + 5 + x - 2 + 5 = 40
                                         2x + 8 = 40
                                         <u>    -8        -8</u>
                                              2x = 32
                                             <u> :2      :2</u>
                                               x = 16
x - 2 = 14

<u>Andy is 16 years old and Jeff is 14 years old</u>
You might be interested in
For altitudes up to 36,000 feet, the relationship between ground temperature and atmospheric
Verizon [17]

Answer:

The equation for a is a=-\frac{2000}{7}*(t-g)

The altitute is 101,428.57 feet

Step-by-step explanation:

You know that the relationship between ground temperature and atmospheric  temperature can be described by the formula

t = -0.0035a +g

where:

  • t is the atmospheric  temperature in degrees Fahrenheit
  • a is the altitude, in feet, at which the atmospheric temperature is  measured
  • g is the ground temperature in degrees Fahrenheit.

Solving the equation for a:

-0.0035a +g=t

-0.0035a= t - g

a=\frac{t-g}{-0.0035}

a=-\frac{2000}{7}*(t-g)

<u><em>The equation for a is </em></u>a=-\frac{2000}{7}*(t-g)<u><em></em></u>

If the atmospheric temperature is -305 °F and the ground temperature is 50 °F, then t= -305 °F and g= 50 °F

Replacing in the equation for a you get:

a=-\frac{2000}{7}*(-305-50)

a=-\frac{2000}{7}*(-355)

a= 101,428.57

<u><em>The altitute is 101,428.57 feet</em></u>

4 0
3 years ago
The most recent census for a city indicated that there were 919,716 residents. The population of the city is expected to increas
OLEGan [10]

Answer:

1,474,951.

Step-by-step explanation:

Given a population that increases by a constant percentage, we can model the population's growth using the exponential model.

P(t)=P_o(1+r)^t,$ where \left\{\begin{array}{lll}P_o=$Initial Population\\r$=Growth rate\\$t=time (in years)\end{array}\right\\P_o=919,716\\r=3.7\%=0.037\\$t=13 years

Therefore, the population of the city in 13 years time will be:

P(t)=919,716(1+0.037)^{13}\\\\=919,716(1.037)^{13}\\\\=1,474,950.9\\\\\approx 1,474,951

The population be at that time will be approximately 1,474,951.

3 0
3 years ago
HELP ME WITH THIS PLEASE!!! COORDINATES!
likoan [24]
(0, 4)
(-1, -3)
(2, -3)

For a 90 degrees clockwise rotation, the rule is (y, -x)
7 0
3 years ago
What characteristics of a graph tell you that it represents a proportional relationship ?
Alexeev081 [22]

Answer:

if they are both equeal

Step-by-step explanation:

3 0
3 years ago
Question is in the picture I will make brainlest if u are correct
AlexFokin [52]

Answer:

SAS (Side-Angle-Side)

8 0
3 years ago
Other questions:
  • Last month we had sixteen days of either green beans or carrots in the cafeteria for lunch. There were six more days of green be
    12·1 answer
  • What is the volume of the figure
    13·1 answer
  • Ruby is decorating for a party and needs 120 meters of ribbon. At the party supply store, the ribbon is sold in rolls. Each roll
    5·1 answer
  • A horse is free to roam and feed in an enclosed pasture that is 150 feet by 200 feet. At any given time, what is the probability
    11·1 answer
  • On the school playground, the slide is due west of the tire swing and due south of the monkey bars. If the distance between the
    11·1 answer
  • What is <br>1.63 x 0.98 =​
    6·2 answers
  • BEG is a triangle ABC And DEF are parellell lines
    11·1 answer
  • There are 7 red marbles, 7 blue marbles, 7 yellow marbles, and 7 green marbles in a bag. If a person randomly selects 1 marble f
    8·1 answer
  • How many solutions does 7x -10 = 7(x+3)
    14·1 answer
  • Work out the percentage change to 2 decimal places when a price of £15 is decreased to £14.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!