Mathematics College


Consider the pyramid below:
12 cm
15 cm
What is the length of a ?

Answers

Answer 1
[surface area of the square pyramid]=area of the base+4*[area of one lateral triangle]

area of the base=12²----> 144 cm²

area of one lateral triangle=b*h/2
b=12 cm
h=slant height -----> 15 cm
area of one lateral triangle=12*15/2-----> 90 cm²

[surface area of the square pyramid]=144+4*[90]----> 504 cm²

the answer is
the surface area of the square pyramid is 504 cm²

Related Questions

what is the answer to this question

Answers

Answer:

0

Step-by-step explanation:

The answer is A srry if I’m wrong

Can a triangle be formed with the sides lengths of 7 cm, 5 cm and 12 cm?

Answers

Answer:

NO because 7+5=12

The sum must be larger (not equal to) the longest side. If it's exactly the same, there's no room to for the shorter two sides to angle up to form a triangle.

The relationship between the number of grams of carbohydrates in a loaf of bread and the number of calories the loaf contains can be modeled by the equation y approx15x-25 where the number of grams of carbohydrates, and y is the number of calories. According to the model, which statements are correct? Select all that apply.

Answers

Answer:

A and C

Step-by-step explanation:

Slope of the equation is 15, that represents calories per gram of carbohydrate increased.

What is linear equation?

A linear equation is an equation in which the highest power of the variable is always 1. It is also known as a one-degree equation.

Given equation,

y = 15x - 25

x is number of grams of carbohydrates in bread

y is number of calories in bread

Comparing it with y = mx + c

slope m = 15

y - intercept c = -25

Slope represents calories per gram of carbohydrate increased.

Hence, 15 is slope of the equation, which represents calories per gram of carbohydrate increased.

Learn more about linear equation here:

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y=-X+4
What is the slope and Y-intercept?

Answers

Answer:

Slope = 1 Y-intercept=4

Step-by-step explanation:

A TV is listed for 35% off. If the original price was $550, what is the sale price?

Answers

Answer:

357.50$

Step-by-step explanation:

550 x 35% =192.50$

550 - 192.50 = 357.50$

How to calculate percent off?
Divide the number by 100 (move the decimal place two places to the left).
Multiply this new number by the percentage you want to take off.
Subtract the number from step 2 from the original number. This is your percent off number.

Graduated containers are used to measure ingredients by weight. true or false

Answers

Answer:

false

Step-by-step explanation:

they are used to measure mL / L

I need help with this problem please

Answers

Answer:

dang i wish i knew but i dont ,_,

What is the answer??????????????????????

Answers

Answer:

I think so Yes

Step-by-step explanation:

Tanya purchases gifts for two friends The first is a purse for $19.99, and the second is pair of shoot. Her total is $45.67 before tax, How much did she spend on the shoes?​

Answers

Answer:

$25.68​

Step-by-step explanation:

Cost of purse = $19.99

Cost of shoe pairs = x

Total cost = $45.67

Total cost = cost of purse + cost of shoe pairs

$45.67 = $19.99 + x

x = $45.67 - $19.99

x = $25.68

Hence, cost of shoe pair = $25.68

A circle has a radius of 15 feet. What is the area of
the circle?

Answers

Answer:

A = 706.5 ft 2

Step-by-step explanation:

A = π ( 15  ft ) 2

A = π 225ft 2

A = 225 π  ft 2

A = 225 ⋅ 3.14  ft 2

Find the number that is exactly halfway between and
3/10 and 4/5

Answers

Answer:

0.550

Step-by-step explanation:

So. . . . what is ( 7 + 21 + 18 + 13 ) ?

Answers

Answer:

59

Step-by-step explanation:

Answer:

59 lol. Ty for the free points. Btw hello

Step-by-step explanation:

Combine Like Terms:
2x + 3 - 5x + 8x + 3x2 + 2



Help please

Answers

Answer:

14x + 5

Step-by-step explanation:

group all the varaibles with x

2x - 5x + 8x + 3x^2

-3x + 8x + 9x

5x + 9x

=14x

now the regular numbers

3 + 2

=5

now put them together to get

14x + 5

please help, asap! ive tried everything to solve this and everything has been wrong so far.

Answers

Answer:

Step-by-step explanation:

$575.68

In a marathon,mike finished ahead of fred.emma finished after fred.john finished after agnes and agnes finished later than emma.in what sequence did each of them finish the marathon?​

Answers

Answer:

Mike Fred Emma Agnes John

Step-by-step explanation:

Mike Fred Emma Agnes John

Create a list of the names in the order they're given and order them through the information provided.

What is the area of this face?

please help!!!!

Answers

Answer:

it is 52 i did this ireafy before

Answer:

28 in^2

Step-by-step explanation:

overall face area =10x4=40

cutout area=6x2=12

40-12=28 in^2

I WILL MARK BRAINLIST, HELP PLEASE
#1.At the beginning of the season, McDonald had to remove 5 orange trees from his farm. Each of the remaining trees produced 210 oranges for a total harvest of 41790 oranges.

Answers

The equation that represents the initial amount of range trees on MacDonald farm is 41790 = 210t - 1050.

The initial amount of trees is 204

How to form an equation ?

The equation that represents the initial amount of range trees on MacDonald farm can be calculated as follows;

Therefore,

number of trees presently = t - 5

Therefore,

41790 = 210(t - 5)

41790 = 210t - 1050

41790 + 1050 = 210t

42840 = 210t

t = 42840 / 210

t = 204

Therefore, the initial amount of trees is 204 .

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Find the length of side x

Answers

Answer:

≈3.464

Step-by-step explanation:

1. the required 'x' belongs to the hypotenuse of the given triangle. It means, the formula of its length is:

x=4*cos30°=4*sin60°, note sin60°=cos30°=√3/2≈0.866.

2. according to the formula above the required length 'x' is:

x=4*0.866=3.464 (or 2√3)

Misty purchased a car several years ago for 21,459. The value of the car depreciated at a rate of 15% annually. What was the value of the car after 5 years? Round your answer to the nearest whole dollar.Misty purchased a car several years ago for 21,459. The value of the car depreciated at a rate of 15% annually. What was the value of the car after 5 years? Round your answer to the nearest whole dollar.

Answers

Answer:

I dont have one

Step-by-step explanation: I just need these 50 points srry :((((((((((

If y = 5x-2 were changed to y = 3x-2how would the graph of the new
function compare with the first one?

Answers

Hi there! The answer is B. it would be less steep.

The change of the function (in this case) influences the slope of the line. Since we've modified the slope from 5 to 3/4, the line will be less steep.

Pls help now ok am tired

Answers

Answer: -9.5

Step-by-step explanation:

10 hope it’s that........

A car averages 25 2/3
miles on a gallon of gas. How many miles can it travel on 8

Answers

205.28 miles is the correct answer

Answer:

205 1/3

Step-by-step explanation:

Because it travels an average of 25 2/3 on one gallon, you simply multiply it by 8 in order to find how many miles it travels on 8 gallons of gas.

Which value is the solution for this equation2
2(a + 3) -4

Answers

Answer:

a=-1

Step-by-step explanation:

2(a+3) -4

you bring it to the other side

2a + 6-4 so 2a+ 2

2a =-2

a =-1

help if you can please

Answers

Answer:

The answer is 44

All Triangles add up to 180° so since you already have two of the three angles you add them up and subtract by 180 to find the missing angle which in your case Is E

Answer: 44 because the I side of a triangle equals 180

Please solve this...................

Answers

Answer:

2 1/12.

Step-by-step explanation:

To solve this you have to find the least common denominator. You know that 4 and 6 can both go into 12 so 5/6 becomes 10/12 and 3/4 becomes 9/12. So now all you have to do is subtract. 7 10/12 - 5 9/12 = 2 1/12.

I hope this helps you :D

Answer:

24/2

Step-by-step explanation:

Hope it is helpful.....

9 times 10 to the power of 7 is how many times as large as 3 times 10 to the power of 3

Answers

Answer:

30000

Step-by-step explanation:

9×10=90

90 power 7=90[10000000]

3×10=30

30 power 3=30[1000]

900000000÷30000=30000

At the local bank 60% of the employees have 2 or more children. There
are 240 employees that have fewer than 2 children. How many
employees does the bank have?
A 96
400
D600

Answers


2
x
=
596


x
=
596
2
=
298
So like 400

Solve for w.
2w - 5 = -3
samana

Answers

Answer:

2w = -3 + 5

W = 2

Step-by-step explanation:

W=-1

Add 3 to -3 & -5
-5 becomes -2
Divide 2 into -2

PLEASE HELP!! DUE TONIGHT!!!

Answers

Answer:

Step-by-step explanation:

Even ( I think)

positivie ( I think )

x intercept - (0,0)(-2,0)(-4,0)

y intercept - (0,0)

I need help. I don't get this

Answers

Answer:

1) 2(x+1)(x+5)

2) (x-10)(x-4)

Step-by-step explanation:

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