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
patriot [66]
3 years ago
5

Find the constant of variation k for the direct variation

Mathematics
2 answers:
solong [7]3 years ago
8 0

Answer:

The answer is C. K=2

Step-by-step explanation:

I just took the quiz and this was the answer

Rasek [7]3 years ago
4 0
\bf \qquad \qquad \textit{direct proportional variation}\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad  y=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad  variation
\end{array}\\\\
-------------------------------\\\\
\textit{we know that }
\begin{cases}
x=4\\
y = 8
\end{cases}\implies 8=k4\implies \cfrac{8}{4}=k\implies 2=k
You might be interested in
Two angles are conplementary.the smaller is 25 less than the larger. what is the larger angle
Gemiola [76]

the larger angle should be 65


6 0
4 years ago
Read 2 more answers
A person invests 7000 dollars in a bank. The bank pays 6.25% interest compounded semi-annually. To the nearest tenth of a year,
KengaRu [80]

Answer:

brainliest?

Step-by-step explanation:

5.3 years

we know that    

The compound interest formula is equal to  

 

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal

t is Number of Time Periods  

n is the number of times interest is compounded per year

in this problem we have  

 

substitute in the formula above  and solve for t

 

 

applying log both sides

 

 

7 0
3 years ago
Solve the equation for x <br> 3/10x-1/5=1
Vikki [24]

Answer:

x=4

Step-by-step explanation:

\frac{3}{10}x-\frac{1}{5}=1\\ \\\frac{3}{10}x=\frac{6}{5}  \\3x=12\\x=4

3 0
3 years ago
What is the standard form of the equation of the circle in the graph
Taya2010 [7]

The standard form of a circle:

(x-h)^2+(y-k)^2=r^2

(h;\ k) - the coordinates of a center of a circle

r - the radius

We have:

the center: (0;\ -4)

the radius: r=2

substitute

(x-0)^2+(y-(-4))^2=2^2\\\\x^2+(y+4)^2=4

8 0
4 years ago
Read 2 more answers
Prove (1+sin/csc-cot)-(1-sin/csc+cot)=2(1+cot)​
Aloiza [94]

\dfrac{1+sin}{csc-cot}-\dfrac{1-sin}{csc+cot}=2(1+cot)\\\\\\\text{Proof from LHS }\rightarrow \text{ RHS}\\\\\dfrac{1+sin}{csc-cot}\bigg(\dfrac{csc+cot}{csc+cot}\bigg)-\dfrac{1-sin}{csc+cot}\bigg(\dfrac{csc-cot}{csc-cot}\bigg)\\\\\\\dfrac{csc+cot+sin csc+sincot}{csc^2-cot^2}+\dfrac{-csc+cot+sincsc-sincot}{csc^2-cot^2}\\\\\\\dfrac{2cot+2sincsc}{csc^2-cot^2}\\\\\\\dfrac{2(cot+sincsc)}{1}\\\\\\2\bigg(\dfrac{cos}{sin}+\dfrac{sin\cdot1}{sin}\bigg)\\\\\\2(cot+1)\\\\\\2(1+cot)=2(1+cot)

LHS = RHS \checkmark

3 0
3 years ago
Other questions:
  • Help me with these two problems? (attatched below)
    9·1 answer
  • Evaluate the following expression 4×[1+(19+26)÷9]
    15·2 answers
  • What is sin 7 (3.14) /4
    9·1 answer
  • A furniture store bought a couch for $425 and marked the price up by 70%. Angela bought the couch with a 6% tax. How much did An
    11·2 answers
  • (4+6)x6÷3-1x3 what's the answer?
    14·2 answers
  • Solve the absolute value inequality: |x + 12| + 5 &lt; 27 Isolate the absolute value by subtracting 5 from both sides.
    6·2 answers
  • The cost ,in dollars ,of renting a locker is a function of the time duration of the rental t in hours.the function c(t) outputs
    12·1 answer
  • Marissa has $800 in her checking account on July 1. She is paid w dollars per week from her part-time job each week. She will ne
    13·1 answer
  • Jimmy has saved 375 to purchase a new guitar. this is 3/4 of the total price of the guitar. what is the price of the guitar?​
    11·1 answer
  • I need help with this!
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!