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____ [38]
2 years ago
14

Wahaj buys a pizza for rs 800.A week later,the same piza costs rs 900.When wahaj asks the manger for the reason ,he explain that

the government has imposed a general sales tax on all resturants .What is the general sale tax percentage
Mathematics
1 answer:
lions [1.4K]2 years ago
6 0

Answer:

12.5%

Step-by-step explanation:

The price increased from 800 to 900. So what is the PERCENTAGE INCREASE??

The increase is 900 - 800 = 100

To find this in terms of original, we need to divide 100 by 800 and multiply by 100 to get the "percentage". Let's do it:

\frac{100}{800}*100=12.5

So the increase is 12.5% and thus the general sales tax is 12.5%

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Find the x intercept of the line graphed by the equation 1/2x-7y=7
Rina8888 [55]

Answer:

1/2*x - 7y = 7

1/2*x - 7 = 7y

1/14*x - 1 = y

y = 1/14*x - 1

3 0
3 years ago
you eat 3/10 of a coconut your friend eats 1/5 of the coconut what fraction of the coconut do you have and your friend eat write
Bas_tet [7]

Answer:

I eat 3/10 of the coconut and my friend eats 1/5 which is 2/10.

We both eat 3/10 + 2/10 which is 1/2 of the coconut.

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2 years ago
Angelica’s bouquet of a dozen roses contains 5 white roses. The rest of the roses are pink. What fraction of the bouquet is pink
Vladimir [108]

Answer:

b) 7 over 12 or (7/12)

Step-by-step explanation:

The number of white roses = 5

Therefore,

The number of pink roses= 12-5

= 7

So the fraction will be

Pink roses/ total roses

= 7/12

3 0
3 years ago
Read 2 more answers
A rectangular solid has width w, a length of 7 more than the width, and a height that is equivalent to 15 decreased by 3 times t
dexar [7]

Answer:

For a rectangular solid with:

width = w

length = l

height = h

The volume is equal to:

V = w*l*h

in this case we know that:

width = w.

"length of 7 more than the width"

l = w + 7.

"a height that is equivalent to 15 decreased by 3 times the width."

h = 15 - 3*w

Then the volume will be:

V = w*l*h = w*(w + 7)*(15 - 3w) = (w^2 + 7*w)*(15 - 3*w)

V =  ( -3*w^3 + 15*w^2 + 105*w - 21*w^2)

V = (-3*w^3 - 6*w^2 + 105*w)

Now, the maximum volume will be for the value of w such that:

V'(w) = 0.

and:

V''(W) < 0

Where:

dV/dw = V'(w).

dV'/dw = V''(w)

Then first we need to differentiate the equation for the volume.

V'(w) = dV/dw = ( 3*(-3*w^2) + 2*(-6*w) + 105)

V'(w) = -9*w^2 - 12*w + 105.

Then we need to find the solution for:

-9*w^2 - 12*w + 105 = 0.

We can use the Bhaskara formula, and we will get:

w = \frac{+12 +-\sqrt{(-12)^2 - 4*(-9)*105} }{2*-9}  = \frac{+12 +- 62.6}{-18}

Then the two solutions are:

w₁ = (+12 - 62.6)/(-18) = 2.81

w₂ = (+12 + 62.6)/(-18) = -15.5

But we can not have a negative width, so we can just discard the second solution.

Now let's check the second condition for the maximum, we must have:

V''(2.81) < 0.

V'' = dV'/dw = 2*(-9*w) - 12 = -18*w - 12

V''(2.81) = -18*2.81 - 12 = -62.58 < 0 .

Then the volume is maximized when w = 2.81, and the maximum volume will be:

V(2.81) =  (-3*(2.81)^3 - 6*(2.81)^2 + 105*2.81) = 180.1

 

8 0
2 years ago
Solve the equation <br> 0.5 (14a + 46) = -11a - 42 + 5a
Nata [24]

Answer:

a = - 5

Step-by-step explanation:

Given

0.5(14a + 46) = - 11a - 42 + 5a ← distribute left side

7a + 23 = - 6a - 42 ( add 6a to both sides )

13a + 23 = - 42 ( subtract 23 from both sides )

13a = - 65 ( divide both sides by 13 )

a = - 5

7 0
3 years ago
Read 2 more answers
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