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OLga [1]
3 years ago
8

What is the exact value of sin(45)

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
6 0
The answer is sqrt(2)

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2. Find the perimeter and area of a square with a 7-ft side.
Rina8888 [55]

Answer:

Step-by-step explanation:

Perimeter 4L = 28

Area L^2 = 49

7 0
3 years ago
Find the distance between the points (3, -5) and (-6, -5).
Sophie [7]

ANSWER

9

EXPLANATION

We want to find the distance between the points (3, -5) and (-6, -5).

The given points have the same y-coordinates .

This means it is a horizontal line.

We use the absolute value method to find the distance between the two points.

We find the absolute value of the distance between the x-values.

The distance between the two points is

|3--6|=|3+6|=|9|=9

8 0
3 years ago
The volume of a rectangular prism is b3 + 8b2 + 19b + 12 cubic units, and its height is b + 3 units. The area of the base of the
omeli [17]
Given:

The volume of the rectangular prism is 

b^{3}+8 b^{2} +19b+12,

the height is h=(b+3)

1. The volume of a rectangular prism is (base area)*height

also, notice that the volume is a third degree polynomial, the height is a 1st degree polynomial, so the base area must be a 2nd degree polynomial, whose coefficients we don't know yet.
Let this quadratic polynomial be (mb^{2}+nb+k)

 
2

b^{3}+8 b^{2} +19b+12=(mb^{2}+nb+k)*(b+3)


notice that  b^{3} is the product of the largest 2 terms: mb^{2} and b, so m must be 1

also, notice that 12 is the product of the constants, k and 3

so k*3=12, this means k=4

3
we write the above equality again:

b^{3}+8 b^{2} +19b+12=(b^{2}+nb+4)*(b+3)


(b^{2}+nb+4)(b+3)= b^{3}+3 b^{2} +nb^{2}+3nb+4b+12

== b^{3}+(n+3)b^{2}+(3n+4)b+12


4
now compare the coefficient with the left side:

8 b^{2}=(n+3)b^{2}

8=n+3

n=5


substituting n=5: 

the base area is b^{2}+5b+4

Answer: b^{2}+5b+4


3 0
3 years ago
What is the value of log9 9?
steposvetlana [31]

Answer:

The answer is 1

Step-by-step explanation:

The value of any log where the base and the parameter are the same is always 1.

This is because the base raised to the first power will always be itself

7 0
3 years ago
Read 2 more answers
Which of the following is an example of a quadratic equation?
jasenka [17]

Answer:

C) any eqaution that has a variable or number squared is a qaudratic equation

5 0
3 years ago
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