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
erma4kov [3.2K]
3 years ago
8

Please help anyone.​

Mathematics
1 answer:
Burka [1]3 years ago
7 0

Answer:

- \frac{27}{7}

Step-by-step explanation:

Given

f(x) = \frac{3}{x+2} - \sqrt{x-3}

Evaluate f(19) by substituting x = 19 into f(x)

f(19) = \frac{3}{19+2} - \sqrt{19-3}

       = \frac{3}{21} - \sqrt{16}

       = \frac{1}{7} - 4

       = \frac{1}{7} - \frac{28}{7} = - \frac{27}{7}

You might be interested in
-3y + 8x = 36<br> 6x + y = -21
tiny-mole [99]

Answer:

x=−27/26

and y=−192/13

Step-by-step explanation:

6x+y=−21;8x−3y=36

Step: Solve6x+y=−21for y:

6x+y=−21

6x+y+−6x=−21+−6x(Add -6x to both sides)

y=−6x−21

Step: Substitute−6x−21foryin8x−3y=36:

8x−3y=36

8x−3(−6x−21)=36

26x+63=36(Simplify both sides of the equation)

26x+63+−63=36+−63(Add -63 to both sides)

26x=−27

26x

26

=

−27

26

(Divide both sides by 26)

7 0
2 years ago
Tomas rides his bike at a steady rate of 2 miles every 10 minutes. Graph the situation. Find the unit rate of this proportional
hjlf

Answer:

\frac{1}{5}

Step-by-step explanation:

\frac{4 - 2}{20 - 10} = \frac{2}{10} = \frac{1}{5}

8 0
2 years ago
Please help me with these questions. I’m genuinely confused.
jok3333 [9.3K]

Answer:

16. 1 4/5

17. 2 2/3

18. 4/11

19. 4 1/2

20. 4/7

21. 1/2

22. 1 2/5

23. 2 1/2

24. 4 2/3

Step-by-step explanation:

1. subtract whole numbers first

2. subtract fractions next (simplify if you can)

3. subtract fractions and whole numbers

8 0
2 years ago
How do I solve this 45-45-90 triangle?
djyliett [7]
So basically x and y are 4 because the hypotenuse of a 45 45 90 triangle is x square root of four. both legs of the triangle are congruent, given taht it’s a 454590
7 0
2 years ago
I need help with number 1 P.S DONT JUDGE ME AM ONLY A 9 YEAR OLD GIRL THAT IS IN 3RD GRADE
grigory [225]
You would do 11 times 8 because you need all the legs of the spiders.
So, there would be 88 spider legs. 88 would be your answer.
5 0
3 years ago
Read 2 more answers
Other questions:
  • A cereal box is an example of what ?
    13·2 answers
  • The credit remaining on a phone card (in dollars) is a linear function of the total calling time made with the card (in minutes)
    11·1 answer
  • What is the value of x? Round to the nearest tenth.
    12·1 answer
  • Identify whether the function f(x)=3x5 is a monomial function, power function, both, or neither.
    14·1 answer
  • Bullco blends silicon and nitrogen to produce two types of fertilizers. Fertilizer 1 must be at least 40% nitrogen and sells for
    6·1 answer
  • How to multiply these
    13·2 answers
  • A cup has the shape of a right circular cone. The height of the cup is 12 cm, and the radius of the opening is 3 cm. Water is po
    12·1 answer
  • May someone please help me, please? This is about exponents by the way. About 5 questions I need help with.
    9·2 answers
  • Jackson is able to craft in Minecraft A cake is crafted from a recipe that requires 3 milk, 2sugar, 1egg and 3wheat. If Jackson
    9·2 answers
  • Factor completely the polynomial xy+2y-2x-4? please solve asap.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!