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AlekseyPX
3 years ago
8

Pls help me i need help asap 30!! points pls help on all 4 questions

Mathematics
1 answer:
zalisa [80]3 years ago
4 0

Answer:

b

d

a

d

Step-by-step explanation:

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Andy is building a model of a square pyramid for a class project. The side length of the square base is 11 inches and the slant
Wewaii [24]

Answer:

The surface area of the model pyramid is 451\ in^{2}

Step-by-step explanation:

we know that

The surface area of the pyramid is equal to

SA=B+LA

where

B is the area of the base of the pyramid

LA is the lateral surface of the pyramid

<em>Find the area of the base B</em>

B=11^{2}=121\ in^{2} -----> is a square

<em>Find the lateral surface area of the pyramid LA</em>

we know that

The lateral surface area is equal to the area of its four triangular faces

LA=4[\frac{1}{2}(11)(15)]=330\ in^{2}

<em>Find the surface area of the pyramid</em>

Substitute the values

SA=121+330=451\ in^{2}

6 0
3 years ago
. Add+18 and -32<br> please help urgent
levacccp [35]

Answer:

-14 is the answer

Step-by-step explanation:

Since 18+(-32) is the same as 18-32, the answer would be negative. When you subtract 32 by 18, you get 14. Moreover, you have to know which side is greater. If the integer is more on the left, meaning the negative side, then your sum of 18-32 is negative.

<em>I know it's hard for people to understand me but I've tried my best to explain it to you. :)</em>

4 0
3 years ago
Robin can mow a lawn in 3 hours, while Brady can mow the same lawn in 4 hours. How many hours would it take for them to mow the
Sauron [17]
The answer to your question is B.
 Please mark as Brainiest Answer.
5 0
3 years ago
Read 2 more answers
95i is a root of f(x)=x^2 +9025. find the other roots of f(x)
Alex_Xolod [135]

Answer:

Other root is -95i

Step-by-step explanation:

Here, Nature of roots of f(x) is imaginary roots.

Therefore, Roots are conjugate of each other.

Conjugate of x + yi is x - yi.

we get conjugate of 95i as -95i

Verification shows....

(x-95)(x+95i)=0

{x }^{2}  -  {95}^{2}  {i}^{2}  = 0 \\  {x }^{2}   + {95}^{2} = 0  \\ {x }^{2}   + 9025= 0   \\ f(x) = 0

this, roots are -95i and 95i

5 0
4 years ago
A circular park has 36 m diameter. Amira jogs around it 5 times every morning. How far does Amira jog every day?
Sedaia [141]

Answer:

D=565.6m

Step-by-step explanation:

From the question we are told that:

Diameter d=36m

Number of times jogged N=5

Generally the equation for Distance traveled is mathematically given by

D=Circumference of Park * Number of times jogged

Where

Circumference of Park c is mathematically give as

 c=2\pi r

 c=2 3.142*\frac{36}{2}

 c=113.1

Therefore

 D=c*N

 D=113.1*5

 D=565.6m

8 0
3 years ago
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