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3 years ago

20 Points Can anyone help me with these Geometry questions? Will give Brainliest.

Mathematics

1 answer:

Tom [10]3 years ago

4 0

Answer:

give brain list first

Step-by-step explanation:

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Which expression is always equivalent to sin X when 0 < x <90

MA_775_DIABLO [31]

cos (90° - x) should be the answer

7 0

3 years ago

If the cost of producing the product is 25,000 plus $5.00 per piece, then what is the cost equation for producing x items?

Alexus [3.1K]

If you mean it's $5 for each item and then you add $25,000 to it, then the equation would be
y=5(x)+25,000
let me know if that's what you were asking

4 0

3 years ago

Read 2 more answers

Item 6 for what value of a is 8x−8+3ax=5ax−2a an identity?

Readme [11.4K]

Let's rewrite the expression as

$8x+3ax-5ax = 8-2a \iff 8x - 2ax = 8-2a \iff 2x(4-a) = 2(4-a)$

So, if $a \neq 4$ , you may divide both sides by $4-a$ , the equation becomes $2x=2$ , and the only solution is $x=1$ , which means that this is not an identity (an indentity is tautologically true, no matter the value of x).

If instead $a = 4$ , you are multiplying both sides by zero, so the equation becomes

$2x \cdot 0 = 2 \cdot 0 \iff 0=0$

So, it doesn't matter which value for x you choose, because you will always end up with $0=0$ , which is obviously always true.

8 0

4 years ago

F(x) = 2 + x^2, evaluate f(7)

Pachacha [2.7K]

$\begin{gathered} f(x)=2+x^2 \\ f(7)=2+(7)^2 \\ f(7)\text{ = 2 + 49} \\ f(7)\text{ = 51} \end{gathered}$

Result

f(7) = 51

8 0

2 years ago

Engineering The equation for the cross section of a spotlight is y+5= 1/2x^2.

Marysya12 [62]

Answer:

$p=1/2\ or\ 0.5\ inches$

Step-by-step explanation:

From the question we are told that

Equation of cross section is $y+5= \frac{1}{2x^2}$

Generally the equation can be rewritten mathematically as

$y+5= \frac{1}{2}x^2$

$x^2=(y+5)2$

$(x-0)^2=(y-(-5))2$

Generally the equation of a parabola with vertical axis is mathematically given by

$(x - h)2 = 4p(y - k)$

Therefore comparing equations

$(x-0)^2=(y-(-5))2$

$4p=2$

$p=2/4$

The distance from the bulb to the vertex of the cross section is given by

$p=1/2\ or\ 0.5\ inches$

4 0

3 years ago