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
Bas_tet [7]
3 years ago
7

-x2-2z for x=2, z=-4

Mathematics
2 answers:
sattari [20]3 years ago
5 0
-(2)2 = -4. 2(-4) = -8. -4 - (-8) = 4. The answer is 4
ddd [48]3 years ago
3 0
-12 because the answer says negative two multiply by 2 subtract 2 multiply by 4
You might be interested in
Trigonometric Identities
bogdanovich [222]
\bf \textit{symmetry identities}\\\\
sin(-\theta )\implies -sin(\theta )\qquad \qquad cos(-\theta )\implies cos(\theta )
\\\\\\also~recall\\\\ sin^2(\theta)+cos^2(\theta)=1\implies cos^2(\theta)=1-sin^2(\theta)
\\\\\\
sin^2(\theta)=1-cos^2(\theta)
\\\\
-------------------------------\\\\\
[1-cos(-t)][1+cos(t)]\implies [1-cos(t)][1+cos(t)]

\bf 1^2-cos^2(t)\implies 1-cos^2(t)\implies sin^2(t)\\\\
-------------------------------\\\\\
%Simplify each expression.  (1−cos⁡(−t))(1+cos⁡(t)) =  (1+sin(t))(1+sin(-t))=  csc⁡(t)tan⁡(t)+sec⁡(−t) =
[1+sin(t)][1+sin(-t)]\implies [1+sin(t)][1-sin(t)]
\\\\\\
1^2-sin^2(t)\implies 1-sin^2(t)\implies cos^2(t)\\\\
-------------------------------\\\\

\bf csc(t)tan(t)+sec(-t)\implies \cfrac{1}{\underline{sin(t)}}\cdot \cfrac{\underline{sin(t)}}{cos(t)}+\cfrac{1}{cos(-t)}
\\\\\\
\cfrac{1}{cos(t)}+\cfrac{1}{cos(-t)}\implies \cfrac{1}{cos(t)}+\cfrac{1}{cos(t)}\implies \cfrac{2}{cos(t)}
\\\\\\
2\cdot \cfrac{1}{cos(t)}\implies 2sec(t)
3 0
3 years ago
Identify the domain of the function shown in the graph.
Leno4ka [110]

Domain is set of all x-values. You are supposed to focus on the x-axis instead.

From the graph, the point starts from x = -5 and ends on x = 5. That means no values would exist after x = 5 or before x = -5.

Hence, the domain starts from -5 to 5.

Answer

  • -5≤x≤5
4 0
3 years ago
A scientist wants to find the average mass of fish living in a large pond. So she will use the masses of a sample of fish from t
Oxana [17]
The scientist would use milligrams, grams, and kilograms.

The best procedure would be to randomly pick 52 fish from the entire pond and weigh each of them as this would be the most unbiased way to achieve the average mass
6 0
3 years ago
25. Willa purchases a vase for her kitchen
IgorC [24]

Answer:

7,7, and 7

Step-by-step explanation:

If she vase is cubical we know that all 3 dimensions are the same. This means that x^3 = 343. So we know the answer is the cube root of 343, which is 7

3 0
3 years ago
In a study by the Texas A & M University, found there were 23,000 prairie dogs in Texas in 2000. By 2010, the number has inc
Dima020 [189]

let x=k

D=dog

T=Taxes

I=increase P=population

solve k

d=23,000

t=2000

d=2.3e^

divide both sides by 2

after year is,2000+k2-2.3

=1.999.7

k2- 23,000=

k-x

or

k2-2

5 0
3 years ago
Other questions:
  • The container below contains 2 gray, 1 white, and 4 black marbles. Without looking, if Eric chooses a marble from the container,
    6·1 answer
  • the nature park has a pride of 5 adult lions and 3 cubs. the adults eat 8 pounds of meat each day and the cubs eat 4 pounds. how
    15·1 answer
  • What is the difference between associative and commutative property?
    11·1 answer
  • Is a octagon concave or convex
    15·2 answers
  • A fluid has density 860 kg/m3 and flows with velocity v = z i + y2 j + x2 k, where x, y, and z are measured in meters and the co
    13·1 answer
  • Can Anyone tell me whats going on in this picture
    15·2 answers
  • Diante has $3.75
    7·1 answer
  • A dance studio offers ballet and hip-hop classes. The studio has 10 ballet classes for every 15 hip hop-hop classes.
    12·2 answers
  • How many solutions does the following system of equations have?
    5·2 answers
  • Help will mark brainless if ur right ​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!