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
Troyanec [42]
3 years ago
7

Can someone help with this question?

Mathematics
1 answer:
Nina [5.8K]3 years ago
8 0

Answer:

1. 5

2. -3

3. -4

4.  0

Step-by-step explanation:

Substitute the value of x in the equation with each of the x's given in the table.

Example:

When x = -1

y = -1^2 - 4 x -1 = 1 - 4 = -3

When x = 4

y = 4^2 - 4 x 4 = 16 - 16 = 0

Please add brainiest

You might be interested in
PLEASE PLEASE HELP ASAPP
adoni [48]

Answer:

17pi/15

Step-by-step explanation:

s = r *theta where r is the radius and theta is the central angle in radians

Convert 51 to radians

51 * pi/180 = 51pi/180

s = 4 * 51pi/180

   = 17pi/15

5 0
3 years ago
Read 2 more answers
How much Zn and how much HCl should be used to produce 1.5 g ZnCl2
tatuchka [14]

Answer:

  • 0.71963 g of Zn
  • 0.80256 g of HCl

Step-by-step explanation:

The required mass of reactants can be computed from the number of moles of product.

  moles of ZnCl₂ = (1.5 g)/(136.282 g) ≈ 0.0110066 moles

Then the mass of Zn required is ...

  mass of Zn = (0.0110066 mol)(65.382 g/mol) = 0.71963 g

Two moles of HCl are used in the reaction with each mole of Zn, so the mass of HCl required is ...

  mass of HCl = 2(0.0110066 mol)(36.458 g/mol) = 0.80256 g

_____

<em>Comment</em>

The discrepancy in the last two decimal places of the weights above versus the calculator output below comes from rounding of moles of Zn to 4 significant digits, instead of 5 or more. The number of moles of ZnCl₂ is closer to 0.0110066.

4 0
3 years ago
(Before you answer I am looking for how I do it. I have the answers but I need to know an equation to do this instead of using l
Tema [17]

Answer:

14 and 16.

Step-by-step explanation:

We know that two consecutive even numbers is 30.

Let's let n be <em>any number</em>.

Then the first <em>even</em> number must be 2n.

This is because n can be any number, either even or odd. However, if we multiply it by 2, this <em>ensures</em> that 2n is even. Remember that any number multiplied by 2 yields an even number.

Therefore, the consecutive even number will be (2n+2). Not (2n+1), because that gives an odd number.

We know that they sum to 30. So, we can write the following equation.

(2n)+(2n+2)=30

And we solve from there:

4n+2=30\\\Rightarrow4n=28\\\Rightarrow n=7

So, the value of n is 7.

Therefore, the first even number is 7(2)=14.

And the consecutive even number is 16.

Edit: Typo

7 0
3 years ago
A team of psychologists studied the effect of multitasking on the completion of cognitive tasks. A group of 40 women participate
kakasveta [241]

Answer: Matched-pairs t-test

Step-by-step explanation:

5 0
3 years ago
PLEASE HELP!! DUE SOON
zhenek [66]

Answer:

C is false as the other three are 100% correct statements. I dont know what is linear growth and exponential growth but I know that the other 3 statements are correct so the only 1 left C must be false.

4 0
3 years ago
Read 2 more answers
Other questions:
  • A single die is rolled one time. Find the probability of rolling an oddodd number or a number less than 55
    7·1 answer
  • Solve the inequality -12≤2x-4&lt;10
    9·1 answer
  • Which of the equations shown have infinitely many solutions?
    15·2 answers
  • What percent of 22 is 58
    5·1 answer
  • a standard number cube has six labeled sides labeled 1-6. think about rolling a number cube one time. why is it just as likely t
    13·1 answer
  • In a certain chemical, the ratio of zinc to copper is 4 to 19. A jar of the chemical contains 646 grams of copper. How many gram
    10·1 answer
  • If the graph of a quadratic function opens down, the function has a minimum value. true or false?​
    12·1 answer
  • Help pleaseeeee??????????????
    5·1 answer
  • Consider the following 8 numbers, where one labelled x
    14·1 answer
  • Easy question plz help
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!