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
Scilla [17]
4 years ago
13

PLEASE HELP!! I will really appreciate it! (Math)

Mathematics
1 answer:
Effectus [21]4 years ago
4 0
Literally, plug the numbers into the equation.

T(x) = 30 - 19x
??? = 30 - 19(20.5)
??? = 30 - 19(11)

Figure these equations out, with a calculator, and you're all set.
Or you can just ask ME to do it, lol!

-179, -359.5
You might be interested in
Can you please help me on 3n-2(-2-7n)=4(1-8n)
MatroZZZ [7]

Answer:

n = 0

Step-by-step explanation:

3 0
3 years ago
Giving brainliest :)
Verizon [17]

Answer:

f^{-1}(x)=x^2+1

Step-by-step explanation:

The inverse of a function is when the x and y are swapped. So the first step is to write f(x) as y and then swap the x and y

Original Equation:

f(x)=\sqrt{x-1}\\

write f(x) as y (since that's what it represents)

y=\sqrt{x-1}

Swap x and y

x=\sqrt{y-1}

Square both sides

x^2=y-1

Add 1 to both sides

x^2+1=y

So this gives you the equation:

f^{-1}(x)=x^2+1

8 0
2 years ago
Which equation represents a proportional relationship? y= 1 /2x or y=2(x+ 1 3 ) or y = 3x or y=−3x+2
disa [49]
Y = -3x + 2 represents a proportional relationship. 
3 0
4 years ago
A true-false test contains 21 questions. In how many different ways can this test be completed.
KatRina [158]

There are 5.1090942e+19 different ways this test can be completed

<h3>In how many different ways can this test be completed?</h3>

The given parameters are:

Questions, n =21

Options = 2 i.e. true or false

The number of different ways this test can be completed is calculated as:

Ways = n!

Substitute 21 for n in the above equation.

So, we have:

Ways = 21!

Expand the above equation

Ways = 21 * 20 * 19 * ...... 1

Evaluate the products

Ways = 5.1090942e+19

Hence, there are 5.1090942e+19 different ways this test can be completed

Read more about factorials at:

brainly.com/question/25997932

#SPJ1

8 0
2 years ago
If anyone is good at grade 8 math problems pls help answer these questions thanks!! :DD
wolverine [178]

Answer:

53 Meters.

Step-by-step explanation:

34*34 + 41*41 = 2837.

1156 + 1681 = 2837.

The square root of 2837 would be your answer.

34*34 + 41*41 = 53.26349 * 53.26349

a*a + b*b = c*c.

a² + b² = c².

5 0
2 years ago
Read 2 more answers
Other questions:
  • ned, the owner of neds nut shop, sells peanuts for $7 per pound and cashews for $6 per pound. ned wants to great a 20 pound barr
    13·1 answer
  • X + 8 = –15<br> I just don’t understand
    5·2 answers
  • -4(9n + 9) = -12(4n - 6).
    15·1 answer
  • Please solve for x .?
    12·1 answer
  • Evaluate <br> - 2x - 6y when x = 5, y=-3
    10·1 answer
  • Choose the angle that is supplementary to angle 2. (it's not angle 3 btw)​
    7·1 answer
  • A baker has small and large bags of sugar for making cakes. The large bag contains 30 cups cups of sugar and is 2.5 times larger
    7·1 answer
  • Expand &amp; simplify<br> 6(3x+3)−3(4x−2)
    8·1 answer
  • 72 ፥ 3² x 2² + 36 ፥ 9 =
    12·1 answer
  • A sheet of plywood costs $10. 75. Production is down which causes the price to rise 25%. What is the new price?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!