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Dima020 [189]
3 years ago
6

Can someone define a domain please?

Mathematics
1 answer:
sdas [7]3 years ago
8 0
Domain is the range of inputs of a function that would make a function valid.
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HELPPPPP <br><br> *LOOK AT PICTURE*
marysya [2.9K]

Answer:

B is the answer of the question

5 0
3 years ago
What is the vertex of the graph of f(x) = x2 + 10x - 9? A) (-5, -34) B) (-5, -9) C) (5, -9) D) (5, 66)
sukhopar [10]

Answer:

A) (-5, -34)

Step-by-step explanation:

f(x) = x^2 + 10x - 9

We complete the square to get the equation in vertex form

Take the coefficient of the x term and divide by 2 then square it.  We add it and then subtract it not to change the value of the equation

f(x) = x^2 + 10x +(10/2)^2 - (10/2)^2 - 9

f(x) = x^2 +10x +25 -25 -9

f(x) = (x^2 +10x +25) -34

The term in parentheses simplified to (x+10/2) ^2

     = (x+5)^2 -34

   = (x - -5)^2 -34

This is in the form (x-h)^2 +k

The vertex is (h,k)  h=-5 and k=-34

(-5,-34)

4 0
3 years ago
Read 2 more answers
Given sec (theta) = 3 what is the exact value of csc (90 - (theta))
sp2606 [1]
Sec θ = 3
1/cos θ = 3
cos θ = 1/3

csc (90 - θ) = 1/sin (90 - θ) = 1/cos θ = 1/(1/3) = 3

Therefore, csc (90 - θ) = 3.
5 0
3 years ago
The area of a triangle is 1,440 cm2. The base of the triangle is 5 times the height. What is the height of the triangle?
madam [21]

Answer: 24 cm

Step-by-step explanation:

The formula for calculate the area of a triangle is:

A=bh/2

Where b is the base and h is the height.

Then if the base of the triangle is 5 times the height:

b=5h

Substitute the above into the formula and solve for the height. Therefore, you obtain that the height is:

1,440=\frac{5h*h}{2}\\1,440=\frac{5h^{2}}{2}

1,440cm^{2}=5h^{2}/2\\h=\sqrt{\frac{2(1,440)}{5}}\\h=24cm

3 0
3 years ago
Read 2 more answers
Hi can someone help me​
aksik [14]
Team a mode is 212 (mode is which number appears the most) median is 184.5 (list all the number from lowest to highest then then if the middle number is 2 add them up and divide by 2


B mode is 0 because there is no numbers that is shown more the. Twice the median is 138.5

Team b had to make dinner


There you go :]
3 0
2 years ago
Read 2 more answers
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