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vodomira [7]
2 years ago
15

A square pyramid has a slant height of 15 cm. A side length of the base is 20 cm. What is the surface area of the pyramid? Enter

your answer in the box. Answer in cm²​
Mathematics
1 answer:
nevsk [136]2 years ago
4 0

Answer:

1000 cm2

Step-by-step explanation:

Pretty sure

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If f(x)=1/9x-2 , what is f–1(x)?
Anna71 [15]
Lets get started :)

f(x) = \frac{1}{9}x - 2
 y   = \frac{1}{9}x - 2
This is the original equation, and now we have to find the inverse.

When finding the inverse, just flip the variables, x as y and y as x

f ⁻¹(x) 
  ↓
x = \frac{1}{9}y - 2
We have to isolate y as it is our f ⁻¹(x)

Take 2 to the other side { When you see subtraction, you do addition }
x + 2 = \frac{1}{9} y

Take 9 to the other side { When you see division, you do multiplication }
9 ( x + 2 ) = y
9x + 18 = y

f ⁻¹ (x) = 9x + 18


7 0
3 years ago
Function: y=x2+5x−7<br><br><br>Vertex: ( , )<br><br><br>Solutions: ( , ) and ( , )
Dima020 [189]

Answer:

vertex : (-5/2, -53/4)

solutions: (-(5-sqrt53)/2, 0) (-(5+sqrt53)/2, 0)

Step-by-step explanation:

6 0
1 year ago
Gloria deposited $500 into a bank account that earned 7.5% simple interest each year. She earned $225 in interest before closing
pav-90 [236]
T = 6 years

Equation:
t = (1/r)(A/P - 1)
Calculation:
First, converting R percent to r a decimal
r = R/100 = 7.5%/100 = 0.075 per year,
then, solving our equation

t = (1/0.075)((725/500) - 1) = 6
t = 6 years

The time required to get
a total amount, principal plus interest, of $ 725.00
from simple interest on a principal of $ 500.00
at an interest rate of 7.5% per year
is 6 years.
5 0
3 years ago
What is the value of x?<br><br> A) 102<br><br> B) 78<br><br> C) 39<br><br> D) 51
Over [174]

Answer:

D

Step-by-step explanation:

The inscribed angle x whose vertex lies on the circle and whose sides are chords of the circle is one half the measure of the intercepted arc, thus

x = 0.5 × 102° = 51° → D

7 0
3 years ago
PPPLLLZZZ HELP ITS (#3 TIMES) :( ILL GIVE U BRAINLIST AND A THANK YOU!! AND U WILL GET POINTSS TOO :)
Marrrta [24]

Answer:

A = mean: 30.7 median:29 mode:29

B= mean

C=median

8 0
2 years ago
Read 2 more answers
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