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
vekshin1
3 years ago
7

Is the equation 3 +z=-19 true,false,open

Mathematics
2 answers:
denis-greek [22]3 years ago
8 0
Subtract 3 from both sides to get 3+z=-19 3+z-3=-19-3 z = -22 So it's only true when z = -22. This means that it's neither 100% true nor 100% false. So it's an open statement or sentence
siniylev [52]3 years ago
8 0

Answer:

Algebra 1 A Mid-Unit-Review

#1 C

#2 C

#3 B

#4 C

#5 B

#6 B

#7 C

#8 A

Have An Amazing Day!

Step-by-step explanation:

You might be interested in
PLEASE HELP FIRST GETS BRAINLIEST
Len [333]
I would say about 13 based on the graph.  

3 0
3 years ago
Read 2 more answers
What are the missing reasons in the proof abcd with diagonal bd prove abd = cdb
Marta_Voda [28]
3) Definition of a parallelogram
4) Alternate interior angles
5) Reflexive property
6) ASA property
Please say if I got anything wrong!
8 0
2 years ago
Read 2 more answers
In the equation <img src="https://tex.z-dn.net/?f=y%20%3D%20ax%5E%7B2%7D%20%2Bk" id="TexFormula1" title="y = ax^{2} +k" alt="y =
polet [3.4K]

virus link above me

dont download it pls u might get virus

3 0
2 years ago
Find the quadratic function y=​f(x) whose graph has a vertex ​(−3​,4​) and passes through the point ​(−7​,0). Write the function
olganol [36]

Answer:

Step-by-step explanation:

This is a parabola since a quadratic is a parabola.  The standard form for a parabola is y = ax² + bx + c

but before we do that, we will use the vertex form, since it will make our work easier at the beginning.  

First and foremost, when we plot the vertex and the given point, the vertex is higher up than is the point; that means that this parabola opens upside down, and its vertex form will be

y=-|a|(x - h)² + k

The absolute value is out in front of the a, so we know that the value of a is positive, but the quadratic itself is negative (upside down) and we will find that math takes care of that negative that needs to be out front.  So we need to solve for a by filling in the x, y, h, and k values from the point and the vertex:  x = -7, y = 0, h = -3, k = 4

0 = a(-7 - (-3))² + 4 and

0 = a(-7 + 3)² + 4 and

0 = a(-4)² + 4 and

0 = a(16) + 4 and

0 = 16a + 4 and

-4 = 16a so

a=-\frac{1}{4}

Now that we know a, we can plug it back into the vertex form and then put it into standard form from there.

y=-\frac{1}{4}(x+3)^2+4

Now we will FOIL out what's inside the parenthesis to get

y=-\frac{1}{4}(x^2+6x+9)+4

Simplify by distributing the -1/4 into the parenthesis:

y=-\frac{1}{4}x^2-\frac{3}{2}x-\frac{9}{4}+4

Combine like terms to get

y=-\frac{1}{4}x^2-\frac{3}{2}x+\frac{7}{4}

And there you go!

5 0
3 years ago
Use the front end addition strategy to add
ruslelena [56]
I cant see anything there needs to be more to the question

4 0
3 years ago
Other questions:
  • Which systems of equations have no solutions? (Check all that apply.)
    5·2 answers
  • 4x - 3y = -7<br> -8 + 2y = -6
    14·2 answers
  • What value of x is in the solution set of 9(2x+1)&lt;9x-18
    13·1 answer
  • Graph the following lines and write the equation in slope-intercept form. Through the point (2,−4) with y-intercept of −2.
    11·1 answer
  • Which of the following functions is graphed below?
    7·1 answer
  • This amendment ensures voting rights for
    6·1 answer
  • How to make a square root spiral​
    12·1 answer
  • PLEASE HELP EMERGENCY
    6·1 answer
  • Evaluate the following expression <br> 9+ 2/8^3=
    15·2 answers
  • Help me to solve all of this questions
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!