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3 years ago

CAN SOMEONE PLEASE HELP ME WITH THIS?? THANK YOU SO MUCH!!

Mathematics

1 answer:

vitfil [10]3 years ago

7 0

Answer:

volume = ⅓×π×4²×9 = 48π sq. meters

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Choice A: 3 nights and one meal for $ 250

poizon [28]

N = number of nights
M = number of meals
n = cost per night
m = cost per meal
T = total cost

Nn + Mm = T

They give us two scenarios :

1. N = 3 and M = 1 and T = 250

3n + 1m = 250

2. N = 3 and M = 6 and T = 330

3n + 6m = 330

Thus, we have a system of equations.

In the first equation, solve for m.

m = 250 - 3n

Now, plug this into the second equation and solve for n.

3n + 6m = 330
3n + 6(250 - 3n) = 330
3n + 1500 - 18n = 330
-15n = -1170
n = $78

Now, plug this back into our equation for m and solve.

m = 250 - 3n
m = 250 - 3(78)
m = 250 - 234
m = $16

Thus, it costs $78 per night and $16 per meal.

6 0

3 years ago

Solve for x 6x-89= -101

exis [7]

Answer:

x= 14.8 -16.83

Step-by-step explanation:

Try to get x by itself

6x= 89-101

divide both sides by 6 and you get x= 14.8 -16.83

7 0

3 years ago

Read 2 more answers

The first step for deriving the quadratic formula from the quadratic equation, 0 = ax2 bx c, is shown.step 1: –c = ax2 bxwhich b

Ksju [112]

Answer:

option (b) is correct.

First step to solve for deriving the quadratic formula from the quadratic equation is completing the square.

Step-by-step explanation:

Given : the quadratic equation $ax^2+bx+c=0$

We have to find the first step for deriving the quadratic formula from the quadratic equation.

Quadratic formula is given by $\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

Consider the given quadratic equation $ax^2+bx+c=0$

Divide the equation by a, we get,

$x^2+\frac{b}{a}x+\frac{c}{a}=0$

Take $\frac{c}{a}$ to other side, we get,

$x^2+\frac{b}{a}x=-\frac{c}{a}$

Add $(\frac{b}{2a})^2$ to both side, we get,

$x^2+\frac{b}{a}x+(\frac{b}{2a})^2=(\frac{b}{2a})^2-\frac{c}{a}$

Thus, the left side is in the form of $(a+b)^2=a^2+b^2+2ab$

On solving, we get,

$(x+\frac{b}{2a})^2=(\frac{b}{2a})^2-\frac{c}{a}$

Then solve for x , we get quadratic formula $\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

Thus, first step to solve for deriving the quadratic formula from the quadratic equation is completing the square.

Thus, option (b) is correct.

3 0

3 years ago

Read 2 more answers

It takes Audrey 3/5 hour to paint 2/5 square yards of wood to be used for making shelves. How many square yards can she paint in

ivanzaharov [21]

This is how I would do it;

Convert to minutes 3/5 *60 = 36
Convert this to decimal 2/5 = 0.4

Then;

if it takes 36 mnts to paint 0.4yd^
in 60 mnts x yd^
___________________

60 x 0.4 / 36 = 0.66666667

convert back to fraction = 2/3 yd^ in 1hr

5 0

3 years ago

What is the area of the triangle?

gavmur [86]

Answer:

Concept: Geometric Interpretation

$area = \frac{1}{2} (b \times h)$
So 1/2(10×24)= 120 units^2

8 0

3 years ago