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3 years ago

3. A local fast food restaurant takes in $9000 in a 4 hour period. Write a direct variation equation

Mathematics

1 answer:

neonofarm [45]3 years ago

3 0

It would take about 9 hours

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The ratio of 1/2 to 3 is equal to the ratio of 5 to what number<br><br><br><br>plz halp ;(

Dvinal [7]

Answer:

5 : 30

Step-by-step explanation:

Note that $\frac{1}{2}$ × 10 = 5

Thus 3 × 10 = 30

Hence

$\frac{1}{2}$ : 3 = 5 : 30

8 0

3 years ago

Which is best estimate of each percent? 21/ of 387?

Phoenix [80]

81.27 is the answer to 21% of 387 so a good estimate would be 82

3 0

3 years ago

(-2x+3y=8....(i)<br>( x+y=2.........(ii)<br>solve by elumination method and substitution

yan [13]

Answer:

x = -2/5

y = 12/5

Step-by-step explanation:

Substitution method;

-2x + 3y = 8 -----------(i)

x + y =2 -----------(ii)

x = 2 - y

substitute the value of x in equ (i)

(-2)* (2-y) + 3y = 8

-4 + 2y + 3y = 8

5y = 8 + 4

y = 12/5

substitute the value of y in equ (ii)

x + 12/5 = 2

x = 2 - 12/5

= 2*5/1*5 - 12/5

= 10 -12/5 = -2/5

Ans: x = -2/5

y = 12/5

elimination method:

-2x + 3y = 8 -----------(i)

x + y =2 -----------(ii)

(i) ====> -2x + 3y = 8

multiply equ (ii) by 2 ====> <u> 2x + 2y = 4</u>

add (i) and (ii) 5y = 12

y = 12/5

Substitute in equ (ii)

x + 12/5 = 2

x = 2 - 12/5

= 2*5/1*5 - 12/5

= 10 -12/5 = -2/5

Ans: x = -2/5

y = 12/5

5 0

3 years ago

Read 2 more answers

I need help with this

Kruka [31]

Answer:

Step-by-step explanation:

The formula of a volume of a cylinder:

$V=\pi r^2H$

r - radius

H - height

From the pictue we have r = 5in and H = 3in. Substitute:

$x=\pi(5^2)(3)=\pi(25)(3)=75\pi\ in^3$

$\pi\approx3.14$

Therefore

$x=(75)(3.14)=235.5\ in^3$

5 0

3 years ago

Read 2 more answers

Verifying Trig Functions

anzhelika [568]

Answer:

The answer to your question is below

Step-by-step explanation:

csc α - cot α = $\frac{sin \alpha }{1 + cos \alpha }$

Work with the left part

$\frac{1}{sin\alpha } - \frac{cos \alpha }{sin \alpha}$

Simplify

$\frac{1 - cos\alpha }{sin\alpha }$

Multiply by the reciprocal

$\frac{1 - cos\alpha }{sin \alpha } x \frac{1 + cos\alpha }{1 + cos\alpha }$

Simplify

$\frac{1 - cos^{2}\alpha}{sin\alpha (1 + cos\alpha)}$

Remember that

sin²α = 1 -cos²α

Substitute the previous equation

$\frac{sin^{2}\alpha }{sin\alpha(1 + cos\alpha ) }$

Simplify

$\frac{sin\alpha}{1 + cos \alpha}$

The identity i proved.

5 0

3 years ago