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
Darya [45]
3 years ago
15

Evaluate -1 -(-z) where z = -2

Mathematics
2 answers:
jarptica [38.1K]3 years ago
6 0

Answer:

-3

Step-by-step explanation:

IRISSAK [1]3 years ago
4 0

Answer:

1

Step-by-step explanation:

-1 - (-z)

-1 - (-2)

-1 + 2

1

You might be interested in
How much alfalfa does Helmut need to add to 30L of ostrich pellets to make a feed mix that is 40% alfalfa by volume?
Nutka1998 [239]

Answer:

  a = 20 . . . . liters

Step-by-step explanation:

To solve this, multiply the equation by 30+a:

  a = 0.4(30 +a)

  a = 12 + 0.4a . . . . . eliminate parentheses

  0.6a = 12 . . . . . . . . subtract 0.4a

  a = 12/0.6 = 20 . . . divide by the coefficient of a

20 L of alfalfa must be added

_____

<em>Check</em>

  20/(30+20) = 20/50 = 40/100 = 0.4 . . . . . . answer checks OK

8 0
3 years ago
In triangle XYZ with vertices X(4,5), Y(5,3) and Z(1,3).
bixtya [17]

Answer:

6747978

Step-by-step explanation:

Mndjdbnsjrjjeijdkd

5 0
2 years ago
What is the related rate of the ratio 90 to 3?
Valentin [98]

Answer:

30:1

Step-by-step explanation:

90:3

90÷3=30

3÷3=1

=30:1

7 0
3 years ago
X-1/2=15 1/4 whats x and show work
ikadub [295]
X-1/2=15 1/4

15  1/4 = 15*4 + 1 = 61/4

61/4

x - 1/2 = 61/4
    +1/2   +1/2

61/4 + 2/4 = 63/4

x = 63/4 
7 0
3 years ago
Producing a musical costs $88,000 plus $5900 per performance. one sold out performance earns $7500 in revenue. If every performa
yan [13]
X = # of perfomances

y = total amount of money

Income: y = 7500x

Expense: y = 5900x + 88000



Substitution:

7500x = 5900x + 88000

1600x = 88000

x = 55

y = 7500(55) = $412,500

55 performances are needed to break-even.
5 0
2 years ago
Other questions:
  • A random variable is normally distributed with a mean of 25 and a standard deviation of 5. if an observation is randomly selecte
    9·1 answer
  • What is the surface area for a rectangle with a length of seven a width of seven and a height of 11
    14·1 answer
  • How do I solve 12 &lt; 4 + 2p
    13·2 answers
  • SUMMER SCHOOL PLZ HELP
    13·1 answer
  • Factor completely.<br><br> 48y^2 + 82y – 70<br><br> please help and show work. super confused :P
    8·1 answer
  • WILL GIVE 20 POINTS!!! PLEASE HELP!!!
    8·2 answers
  • Pls answer number 6 fast pls someone help
    9·2 answers
  • A 3-pack of raffle tickets costs $5.76. What is the unit price​
    7·2 answers
  • Help me I didn't learn this lol ╥﹏╥
    8·2 answers
  • Combine like terms to complete the equivalent expression. 2 1/2 z² + 4 1/2 + 7z - 4 +5z - 1/2 z² = ( _ z² - _z²) + ( 7z + _ z) +
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!