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
Lubov Fominskaja [6]
2 years ago
15

Solve the compound inequality 3t-8/5 and 4-t<-7

Mathematics
1 answer:
Sav [38]2 years ago
8 0

Answer: -2.8

Step-by-step explanation:

3t-(8/5) * 4-t < -7

(15t-8)/5 * 4-t < -7

((15t-8)(4-t))/5 < -7

(15t^2)-28t-32< -7

(15t^2)-28t-32-7< 0

(15t^2)-28t-39< 0

Using the quadratic/almighty formula

t= (-b +- ((b^2)-4ac)^(1/2)/2a)

a=15, b=-28, c=-39

t= (-(28) +- (((-28)^2)-4(15)(-39))^(1/2))/2(15))

t= -2.8 or t= 0.9

Since

t<0, then t= -2.8

You might be interested in
Please don't answer just to say "I don't know"<br> Thank you
AlekseyPX

8x+15 = 2x+39

8x =2x+24

6x = 24

x = 24/6 = 4

 angle 4 = 2(4) +39 = 8+39 = 47

 angle 6 = angle 4

angle 6 = 47 degrees

5 0
3 years ago
Read 2 more answers
10 fish are in a tank, 3 fish drown, how many fish are left?
taurus [48]
10. Fish don't drown (; nice try tho
6 0
2 years ago
Read 2 more answers
Find the sum and choose the correct answer.
Alborosie
B, n to the 3rd power + 4n to the 2nd power +8n -16
5 0
3 years ago
Read 2 more answers
Colin’s piano lesson is 45 minutes, or Three-fourths of an hour, long. If he practices 6 different songs and spends an equal amo
NikAS [45]

Answer:

<em>Colin spends 1/8 of an hour practicing each song</em>

Step-by-step explanation:

Colin's piano lesson is 3/4 of an hour, long.

In that period, he practices 6 different songs, spending an equal amount of time on each one.

This means that each song gets the sixth part of the lesson duration. The fraction that expresses that amount is:

\displaystyle \frac{\frac{3}{4}}{6}=\frac{3}{24}=\frac{1}{8}

Colin spends 1/8 of an hour practicing each song

5 0
3 years ago
Read 2 more answers
1+1000000000000000000000
solniwko [45]

Answer:

1000000000000000000001

Step-by-step explanation:

Done. You're welcome

4 0
2 years ago
Read 2 more answers
Other questions:
  • The diagram shows PQR. Which term describes point S?
    15·2 answers
  • Experimental probability that it will rain on any given day in Houston Texas is about 50% out of the 365 days about how many day
    8·1 answer
  • Please help me out! :)
    11·1 answer
  • Please help me with this math problem
    13·2 answers
  • Question12....................................
    7·1 answer
  • Area models 6437 divide 5
    10·1 answer
  • Explain how to find the value of x. Be sure to include the postulates, definitions and theorems that justify your answer.
    10·1 answer
  • Pleaseeee help!!!! I will mark you as brainlinest for correct answer!!!!!!!!
    7·1 answer
  • Task 1: How do you get from one number to the next using multiplication or division?
    11·1 answer
  • You are planning a 500 mile trip and your car averages 20 miles per gallon.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!