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2 years ago

Any line perpendicular to the line y = 2x +4 has a slope of -2.

Mathematics

1 answer:

liubo4ka [24]2 years ago

7 0

Answer: FALSE

You get y = 2x +4 so the slope is 2. Perpendicular lines have opposite-reciprocal slopes, so the slope of the line we want to find is -1/2.

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Please help I don't understand. This question

Doss [256]

9*2 =18 add 27 =45 this is the answer hope this helped

8 0

2 years ago

Read 2 more answers

The function f(x) = –x2 + 20x – 75 models the profit from one customer, in dollars, a shop makes for printing photos, where x is

trasher [3.6K]

The function is graphed as shown below

Part A:

We use the formula $- \frac{b}{2a}$ to find the vertex of the function. A quadratic function of the form of $a x^{2} +bx+c$ and equating this form to the given function $- x^{2} +20x-75$ , we have
$b=20$ and $a=-1$ .

Substituting $a$ and $b$ into the vertex formula, we have
$x=- \frac{20}{2(-1)}=10$ , as shown in the graph

This calculation means that the highest profit is achieved when the number of photo printed equals to ten photos

Part B:

We can find solution to this equation by factorising

$- x^{2} +20x-75=0$
$-( x^{2} -20x+75)=0$
$x^{2} -20x+75=0$
$(x-5)(x-15)=0$
$x=5$ and $x=15$ , as shown in the graph

The two values means that the company makes no profit when they either produce 5 or 15 photos

8 0

3 years ago

Find f(4) please, I need help

mixer [17]

Answer:

f(4) = 1

Step-by-step explanation:

f(4) = what?

So if we know that x, aka 4, is technicially f is greater then 2, so you can plug in x as 4. So that means 5(4) - 19 = 20 - 19 = 1, so f(4) = 1

7 0

2 years ago

Plot the point first and then use the slope from that point (-4,3) M=-1/2

Goshia [24]

Plot the point first and then use the slope from that point - 3270801. ... Plot the point first and then use the slope from that point (-4,3) M=-1/2. 0

7 0

2 years ago

The area of the surface of a circular pond is needed. A measure about the pond gives a circumference of about 47 feet. Find the

Whitepunk [10]

Answer:

55.95 ft²

Step-by-step explanation:

Circumference formula: C = 2πr => r = C / (2π)

Area formula: A = πr²

Substituting C / (2π) for r in the above equation, we get:

C 47 ft

A = π( ----------- )² = π ( -------------- )²

2π (2π)

or ...

π(47 ft)² 2209 ft²

A = ---------------------- = -------------------- = 55.95 ft²

4π² 4(3.14159)²

3 0

2 years ago