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4 years ago

Please help!! Will give brainliest to correct answer!

Mathematics

2 answers:

vagabundo [1.1K]4 years ago

6 0

Your answer is - 18 units squared

Anna71 [15]4 years ago

4 0

Answer:

18 units squared

Step-by-step explanation:

A=a+b over 2h=

9+3 over 2 times 3=18

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Alexandra purchases two donuts and three cookies at the donut shop and it's charged $3.30. Brianna purchases five donuts and two

Amiraneli [1.4K]

Given:

Cost of two donuts and three cookies = $3.30

Cost of five donuts and two cookies = $4.95

To find:

The cost of each donut.

Solution:

Let x be the cost of each donut and y be the cost of each cookie.

Cost of two donuts and three cookies = $3.30

$2x+3y=3.30$ ...(i)

Cost of five donuts and two cookies = $4.95

$5x+2y=4.95$ ...(ii)

Multiply equation (i) by 2.

$4x+6y=6.60$ ...(iii)

Multiply equation (ii) by 3.

$15x+6y=14.85$ ...(iv)

Subtracting (iii) from (iv), we get

$15x+6y-4x-6y=14.85-6.60$

$11x=8.25$

Divide both sides by 11.

$x=\dfrac{8.25}{11}$

$x=0.75$

Therefore, the cost of each donut is $0.75.

7 0

3 years ago

Need help!

blagie [28]

$\mathcal \pink{GIVEN:}$

Radius = 3 m
Height = 7 m

$\mathcal \purple{TO \: FIND:}$

Volume = ?

$\mathcal \blue{CALCULATION:}$

$\qquad{ \sf \: volume = \pi{r}^{2}h }$

Where,

r is radius
h is height

$\qquad{ \tt\nrightarrow \: \frac{22}{7} \times {3}^{2} \times 7}$

$\qquad{ \tt\nrightarrow \: \frac{22}{ \cancel7} \times {3}^{2} \times \cancel7}$

$\qquad{ \tt\nrightarrow \: 22 \times {3}^{2} }$

$\qquad{ \tt\nrightarrow \: 22 \times 9 }$

$\qquad{ \boxed{ \tt\Rrightarrow \: 198\: {m}^{3} }}$

➪ Henceforth, The volume of the cylinder is 198 m³...

6 0

2 years ago

A rectangular carpet has a perimeter of 244 inches. The length of the carpet is 90 inches more than the width. Determine the dim

RSB [31]

Answer:

The dimensions of rectangle are:

Width = 16 inches

Length = 106 inches

Step-by-step explanation:

Perimeter of rectangle = 244 inches

Let Width of rectangle = w

Length of rectangle = w+90

We need to find the dimensions (length and width) of the carpet

The formula used will be: $Perimeter=2(length+width)$

Putting values and making equation:

$244=2w+2(w+90)\\Solving:\\244=2w+2w+180\\244=4w+180\\Switching\:sides\\4w+180=244\\Subtracting\:180\:from\:both\:sides\\4w=244-180\\4w=64\\Dividing\:both\:sides\:by\:4\\\frac{4w}{4} =\frac{64}{4}\\w=16$

So, we get w = 16

The width w = 16 inches

Now, finding length = w+ 90 = 16+90 = 106 inches

Therefore the dimensions of rectangle are:

Width = 16 inches

Length = 106 inches

4 0

3 years ago

How do you tell if its one solution

lisov135 [29]

Answer:

when x equals one number, if it was no solution then x=y

Step-by-step explanation:

6 0

3 years ago

A student is chosen at random from a large statistics class and asked how much time (in whole hours) she spent studying during t

allochka39001 [22]

Answer:

Step-by-step explanation:

The sample space is the total possible values of an experiment or research. Since the total number of hours is 24, then the total possible number (or the limit she can use have) is 24. This she cannot exceed this 24 hour limit. Then we call this the total possible outcome and thus the sample space.

6 0

3 years ago