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expeople1 [14]
3 years ago
7

I need help......,.................

Mathematics
2 answers:
Reptile [31]3 years ago
7 0

The answer is B

everyone should know this

Alexxandr [17]3 years ago
4 0

Answer:B

Step-by-step explanation:

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What is the surface area of the regular pyramid given below?
yuradex [85]

For this case we have by definition, that the total surface area of a regular pyramid with a square base is given by:

SA = \frac {1} {2} p * S + A_ {b}

Where:

p: It is the perimeter of the base

S: It's the inclination

A_ {b}: It is the area of the base

Substituting:

A_ {b} = 7 ^ 2 = 49units ^ 2\\p = 7 + 7 + 7 + 7 = 28units\\S = 10units\\SA = \frac {1} {2} 28 * 10 + 49\\SA = 140 + 49\\SA = 189 \ units ^ 2

ANswer:

Option B

3 0
3 years ago
H(t)=-16(t-1)^2+16 <br> What is the maximum height the ball reaches and how long does it take?
Aleksandr-060686 [28]

Given t = time and h = height

h(t) =  - 16(t - 1)^{2}  + 16

From the equation.

y = a(x - h)^{2}  + k

h is the axis od symmetry

(h, k) is the vertex.

In the equation, h is 1 and k is 16.

So the maximum value is 16 at t = 1.

The ball reaches maximum at 16 and it takes t = 1 to reach the maximum point.

4 0
2 years ago
There are 10 girls and 6 bios in class the teacher randomly draws one student’s name and then draws another
adell [148]

Answer:

Step-by-step explanation:

if there are 10 girls and 6 boys total we have 16 students. Divide 10 by 16 which give 62% a girl will be picked and for boys divide 6 by 16 which is 38% a boy will be picked.

6 0
2 years ago
Evaluate the following expression when x = -4 and y = 4. x^6-x/4y
tester [92]

Answer:

Step-by-step explanation:

4 0
3 years ago
14] two drivers, starting at the same place, begin driving in opposite directions at the same time. one heads east at 65 kilomet
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65+85=150
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