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professor190 [17]
3 years ago
6

Xsquare-8x+15 please help me answer it thank you​

Mathematics
1 answer:
Murrr4er [49]3 years ago
4 0

Step-by-step explanation:

{x}^{2}  - 8x + 15 = 0 \\ (x - 3)(x - 5) = 0 \\ x = 3 \: or \: x = 5

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Angles BAE and FAC are straight angles. What angle relationship best describes angles BAC and EAF?Adjacent anglesComplementary a
Natalka [10]

The best angle relationship that describes angles BAC and EAF is supplementary angles

The sum of angle on a straight line is supplementary i.e. they sum up to 180 degrees.

If Angles BAE and FAC are straight angles, it means they are linear pairs and their sum is 180 degrees. Mathematically;

m<BAE + m<FAC = 180degrees

Hence we can conclude that the best angle relationship that describes angles BAC and EAF is supplementary angles

Learn more here: brainly.com/question/22309882

8 0
2 years ago
VGravel is being dumped from a conveyor belt at a rate of 50 ft3/min. It forms a pile in the shape of a right circular cone whos
kupik [55]

Answer:

0.325 ft/min

Step-by-step explanation:

To solve we must follow the following steps:

First, the volume of a cone is given by the equation:

Vc = (1/3) * Pi * (r ^ 2) * h

where r is the radius and h is the height.

they tell us that the height is equal to twice the radius, therefore

h = 2r; r = h / 2

replacing r in the volume of the cone:

Vc = (1/3) * Pi * ((h / 2) ^ 2) * h

solving we have:

Vc = (1/3) * Pi * (1/4) * (h ^ 2) * h

Vc = (1/12) * Pi * h ^ 3

They give us the change in volume with respect to time, that is, dV / dt = 50

It can also be expressed in the following way:

dV / dt = (dV / dh) * (dh / dt)

We know V, so we can derive with respect to h, we are like this:

dV / dh = 3 * (1/12) * Pi * h ^ 2

dV / dh = (1/4) * Pi * h ^ 2

we know that h is equal to 14, therefore:

dV / dh = (1/4) * Pi * 14 ^ 2

dV / dh = (1/4) * 3.14 * 196 = 153.86

Now if we replace

dV / dt = (dV / dh) * (dh / dt)

50 = 153.86 * (dh / dt)

(dh / dt) =  50/158.36

(dh / dt) =  0.3249

This means that the change in height with respect to time is 0.325 feet per minutes.

4 0
2 years ago
Read 2 more answers
F(x)=x^2+4x and g(x)= 2x+2, find f(5)+ g(6)
Lubov Fominskaja [6]
F(5) = 5² +4*5=25+20 = 45
g(6) = 2*6 +2 =12+2=14

f(5) + g(6)
= 45 +14 =59
3 0
3 years ago
(-9) + (-4) =
Gwar [14]

\\ \bull\sf\longmapsto -9+(-4)=-9-4=-13

\\ \bull\sf\longmapsto +3-(-5)=3+5=8

\\ \bull\sf\longmapsto 2\times 2=4

\\ \bull\sf\longmapsto 36+4=40

\\ \bull\sf\longmapsto 5\times 7=35

\\ \bull\sf\longmapsto 8(9)=72

\\ \bull\sf\longmapsto -4+(-2)=-4-2=-6

\\ \bull\sf\longmapsto 3-(-6)=3+6=9

\\ \bull\sf\longmapsto -6(-3)=18

\\ \bull\sf\longmapsto -4+(-4)=-4-4=-8

\\ \bull\sf\longmapsto 5(7)=35

\\ \bull\sf\longmapsto 4-(-5)=4+5=9

\\ \bull\sf\longmapsto 4-3=1

\\ \bull\sf\longmapsto 10+5=15

\\ \bull\sf\longmapsto 3(8)=24

7 0
3 years ago
<img src="https://tex.z-dn.net/?f=-13%20%3D%5Cdfrac%20r9%2B8%E2%88%9213%3D%209r%E2%80%8B%20%2B8" id="TexFormula1" title="-13 =\d
Murljashka [212]
Don’t know but it I’ll be here with a big boi 2
7 0
3 years ago
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