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2 years ago

I WILL MARK AS BRAINLIEST PLEASEEEEE HELPPPP MEEEEE!!! (look at the pic)

Mathematics

1 answer:

nikdorinn [45]2 years ago

7 0

Answer:

C x = 5 ÷ 3

Step-by-step explanation:

x³ = 125 ÷ 27

x = ³√125 ÷ ³√27

x = 5 ÷ 3

It can't be D because a negative number cubed will result in a negative number. Therefore it must be C.

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The perimeter of a rectangular window is 324 cm.

padilas [110]

Answer:

76 cm

Step-by-step explanation:

P=2L+2w

324=2(86)+2w

324=172+2w

324-172=2w

2w=152

w=152/2

w=76 cm

4 0

2 years ago

A restaurant operator in Accra has found out that during the partial lockdown, if she sells a plate of her food for GH¢20 each,

Lilit [14]

Answer:

Step-by-step explanation:

First, note this parameters from the question.

We let x = number of $5 increases and number of 10 decreases in plates sold.

Our Revenue equation is:

R(x) = (300-10x)(10+5x)

We expand the above equation into a quadratic equation by multiplying each bracket:

R(x) = 3000 + 1500x - 3000x - 1500x^2

R(x) = -1500x^2 - 1500x + 3000 (collect like terms)

Next we simplify, by dividing through by -1500

= 1500x^2/1500 - 1500x/1500 + 3000/1500

= X^2 - x + 2

X^2 - x + 2 = 0

Next, we find the axis of symmetry using the formula x = -b/(2*a) where b = 1, a = 1

X = - (-1)/2*1

X = 1/2

Number of $5 increases = $5x1/2 = $2.5

=$2.5 + $20 = $22.5 ticket price gives max revenue.

7 0

2 years ago

How many and what type of solutions does the equation have?<br><br> 2k² = 9 + 3k

anzhelika [568]

Answer:

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

The volume of the cylinder above is 2,314.25, and the radius of the base is 8.9 Find the volume of the cone.

olga55 [171]

Answer: $771.41\ units^3$

Step-by-step explanation:

The missing figure is attached.

The volume of an oblique cylinders and the volume of a right cylinder can be found with this formula:

$V_{cy}=\pi r^2h$

Where "r" is the radius and "h" is the height.

The volume of an oblique cone and the volume of a right cone can be found with this formula:

$V_{co}=\frac{1}{3}\pi r^2h$

Where "r" is the radius and "h" is the height.

According to the information given in the exercise, you know that the volume of the cylinder and also the radius of the cylinder and the cone ,are the following:

$V_{cy}=2,314.25\ units^3\\\\r=8.9\ units$

Therefore, in order to find the volume of the cone, you only need to multiply the volume of the cylinder by $\frac{1}{3}$ .

Then, you get:

$V_{co}=\frac{1}{3}(2,314.25\ units^3)\\\\V_{co}=771.41\ units^3$

8 0

2 years ago

Read 2 more answers

How does h

Agata [3.3K]

Answer:

h(t) = 16t changes 16 units every t. in the interval t=7 to t=2,

if its asking for:

$\int\limits^2_7 {16t} \, dt$

then it's

16(2) - 16(7) = 32 - 112 = -80

4 0

2 years ago