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
pogonyaev
3 years ago
9

Evaluate -(a + b), given values a = -4, b = - 12.

Mathematics
2 answers:
tatuchka [14]3 years ago
4 0
The answer would be -16
stira [4]3 years ago
4 0
16 I think is the correct answer
You might be interested in
I need help with 20 and 21
7nadin3 [17]
Https://us-static.z-dn.net/files/d63/6f064638901e33bea26f4fc25a74aa69.jpg

6 0
3 years ago
Select the two values of x that are roots of this equation x^2+3x-3=0<br> Apex
andrew-mc [135]

Answer:

C, and D are both roots of this equation

8 0
2 years ago
Read 2 more answers
Calculate the arc length of GH in terms of pi
Trava [24]
Idk how to do this I forgot
4 0
3 years ago
Vertical angles 4x+7 and [5(x-4)] what is the value of x
choli [55]

Answer:

x = 27

Step-by-step explanation:

vertical angles are congruent , then

5(x - 4) = 4x + 7 ← distribute parenthesis on left side

5x - 20 = 4x + 7 ( subtract 4x from both sides )

x - 20 = 7 ( add 20 to both sides )

x = 27

5 0
2 years ago
Read 2 more answers
Find the area of an isosceles trapezoid, if the lengths of its bases are 16 cm, and 30 cm, and the diagonals are perpendicular t
Klio2033 [76]
For this case we have:
 a = 30 cm
 c = 16 cm
 We look for the length of the diagonal:
 d = x + y
 Where,
 For x:
 a ^ 2 = x ^ 2 + x ^ 2
 x = a / root (2) = 30 / root (2) = 21.2132 cm
 For y:
 c ^ 2 = y ^ 2 + y ^ 2
 y = c / root (2) = 16 / root (2) = 11.3137 cm
 The diagonal is:
 d = x + y
 d = 21.2132 + 11.3137
 d = 32.5269 cm
 Then, the height is:
 h = h1 + h2
 For h1:
 h1 = root (x ^ 2 - (a / 2) ^ 2) = root ((21.2132) ^ 2 - (30/2) ^ 2)
 h1 = 15 cm
 For h2:
 h2 = root (y ^ 2 - (c / 2) ^ 2) = root ((11.3137) ^ 2 - (16/2) ^ 2)
 h2 = 8 cm
 Finally:
 h = h1 + h2
 h = 15 + 8
 h = 23 cm
 Then, the area is:
 A = (1/2) * (a + c) * (h)
 A = (1/2) * (30 + 16) * (23)
 A = 529 cm ^ 2
 Answer:
 
the area of an isosceles trapezoid is:
 
A = 529 cm ^ 2
4 0
2 years ago
Other questions:
  • Write an equation of a line that passes through the given point and has slope m<br> (3,4) m=1/2
    11·2 answers
  • 8<br> Factor x2 + 12x + 35.<br> x2 + 12x + 35 =
    15·1 answer
  • Which expression represent a number that is one fourth as great as 10-2
    12·2 answers
  • 6n = 3n + 27 please help
    7·2 answers
  • Karonlina flips a coin 60 times. how many times would you expect it's to land heads up?
    15·2 answers
  • What is the domain of the given function?
    12·2 answers
  • Solve the system.
    10·1 answer
  • ILL GIVE THE BRAINLIEST pls help me with this question EVERYTHING IS IN THE PICTURE PLS HELP DUE TODAY ​​IF YOU PUT A WRONG ANSW
    11·2 answers
  • Solve for x in the triangle. Round your answer to the nearest tenth.
    5·1 answer
  • PLEASE HELP! What is the value of a?<br><br> A 12<br> B. 15<br> C. 17:25<br> D. 21.25
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!