3 years ago

Which input value produces the same output value for the two functions?

Mathematics

1 answer:

LuckyWell [14K]3 years ago

8 0

Step-by-step explanation:

where are the 2 functions ?

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Two trains 150 miles apart are traveling toward each other along the same track. The first train goes 60 miles per hour; the sec

Nataly_w [17]

Answer:

120 miles

Step-by-step explanation:

Distance = 150 miles

train 1 = 60 mph

train 2 = 90 mph

directions of trains = towards each other

Time to meet = 150/(60+90) = 150 miles / 150 mph = 1 hour

Speed of fly = 120 mph

Since fly has been flying for one hour, it travelled 120 miles.

3 0

3 years ago

Find the linear approximation of the function f(x, y, z) = x2 + y2 + z2 at (4, 4, 7) and use it to approximate the number 4.022

miss Akunina [59]

Answer:

80.66

Step-by-step explanation:

$L\left( x \right) = f\left( a \right) + f'\left( a \right)\left( {x - a} \right)$

$f(x, y, z) = x^2+y^2+z^2$

Since we have three variables,

$L(x, y,z) = f(a, b,c) + f_x (a, b,c) (x - a) + f_y (a, b,c) (y - b) +f_z(a,b,c)(z-c)$

$f(4, 4, 7) = 4^2+4^2+7^2=81$

$f_x (a, b,c)=2x=2*4=8\\f_y (a, b,c)=2y=2*4=8\\ f_z(a,b,c)=2z=2*7=14$

Therefore:

$L(x, y,z) = 81+ 8(x - 4) + 8 (y - 4) +14(z-7)$

Using the above:

f(4.02, 3.99, 6.97) =81+ 8(4.02 - 4) + 8 (3.99 - 4) +14(6.97-7)=80.66.

The approximation of $4.02^2 + 3.99^2 + 6.97^2$ is 80.66000.

3 0

3 years ago

Carl is paid $10 plus $8 an hour he was paid $66 how many hours did he work?

loris [4]

10+8h=66
minus 10 both sides
8h=56
divide both sides by 8
h=7
worked 7 hours

6 0

3 years ago

Read 2 more answers

4x=2<br>5x+2y=13<br>6x²-3x=16<br>5x³-x²+2=0<br>son ecuaciones cuadraticas o no?

Verdich [7]

Only the 3rd one is a quadratic equation if we move the 16 to the other side of the equal sign.

3 0

1 year ago

Could someone please answer this And explain I would really appreciate it thank you so much :)

makvit [3.9K]

Answer:

The first choice

Step-by-step explanation:

So you see that square down there, does mean that the angle is 90 degrees. So 90-50 = 40 so yea the first choice.

6 0

3 years ago