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Ugo [173]
3 years ago
15

What is -4x+5y if x is 3 and y is 5

Mathematics
2 answers:
ella [17]3 years ago
8 0
FIrst we do multiplication, so 4x is 4*3, which is 12, but as it has a negative sign in front of it, the answer is negative. Then we do 5y which is 5*5, which is 25. Now we are left with -12 + 25, which is 13.
klasskru [66]3 years ago
6 0
The answer is 13 hope this helps
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A sector with an area of 26pie cm^2 has a radius of 6 cm. What is the central angle measure of the sector in radians?
Zolol [24]

Answer:

The central angle measure of the sector in radians is \theta=\frac{13}{9}.

Step-by-step explanation:

A sector of a circle is the portion of a circle enclosed by two radii and an arc. It resembles a "pizza" slice.

The area of a sector when the central angle is in radians is given by

                                                    A=(\frac{\theta}{2})\cdot r^2

where

r = radius

θ = central angle in radians

We know that the area of the sector is 26 \:cm^2 and the radius is 6 cm. Applying the above formula and solving for the central angle (\theta) we get that

                                                   26=(\frac{\theta}{2})\cdot (6)^2\\\\\left(\frac{\theta}{2}\right)\left(6\right)^2=26\\\\\frac{\frac{\theta}{2}\cdot \:6^2}{36}=\frac{26}{36}\\\\\frac{\theta}{2}=\frac{13}{18}\\\\\theta=\frac{13}{9}

3 0
3 years ago
Find the inverse of g(x) = 2x^3 +3<br><br> Step by step working please I want to learn
malfutka [58]

Set g(x) as y. Then you get y = 2x^3 + 3. Switch Y with X and you get x = 2y^3 + 3. Now you can put everything with x getting, y = cuberoot[(x-3)/2]

3 0
2 years ago
Read 2 more answers
A line passes through the point (–2, 7) and has a slope of –5. What is the value of a if the point (a, 2) is also on the line?
never [62]
(x1,y1) = (-2,7)
m = -5
(x,y) = (a,2)

Forming the equation,
(y-y1) = m(x-x1)
y - 7 = -5[x - (-2)]
y - 7 = -5x - 10
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Putting the values of (x,y) we get,
2 + 5a = -3
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8 0
3 years ago
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Which represents the inverse of the function f(x) = 4x?
irga5000 [103]

Answer:

y = x/4

Step-by-step explanation:

First, replace f(x) with y, so it's easier to find the inverse:

y = 4x

To find the inverse of this function, you would replace all the y's with x's and all the x's with y's, and then solve for y. That would be:

x = 4y

y = x/4

Therefore, the inverse function of y = 4x is y = x/4.

4 0
3 years ago
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PIT_PIT [208]

Answer:

0

Step-by-step explanation:

Slope is Rise over Run (y / x).

For 2 points, you would take the difference of y-coordinates and divide by the difference of x-coordinates.

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Since both y-coordinates are the same (ten minus ten), your slope is zero (zero divided by anything is zero).

7 0
3 years ago
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