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3 years ago

NEED HELP ASAP PLEASEEEE!!!!!!!!! DUE AT 5

Mathematics

1 answer:

motikmotik3 years ago

4 0

Answer:

Step-by-step explanation:

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A house costs $600 more than twelve times the lot on which it was built. If the lot cost x dollars, what did the house cost? Whi

Mnenie [13.5K]

House=600+12lot
lot=x
house=600+12x

answer is first expresion

7 0

3 years ago

Read 2 more answers

Find the directional derivative of f at the given point in the direction indicated by the angle θ.

anygoal [31]

Answer:

Directional derivative = 1/√2

Step-by-step explanation:

We are given f(x, y) = y cos(xy)

Now, we know that;

∇f(x, y) = ycos xy

Thus, applying that to the question, we have;

∇f(x, y) = [-y² sin xy, cos (xy) - xy sin xy]

At coordinates (0,1),we now have;

∇f(0, 1) = [-1²•sin0, (cos 0) - 0]

∇f(0, 1) = [0, 1]

Now, unit vector indicated by the angle θ is given as; u = [cos θ, sin θ]

From the question, since θ = π/4, thus

u = [cos π/4, sin π/4]

Cos π/4 in surd form is; 1/√2

Also, sin π/4 in surd form is; 1/√2

So, u = [1/√2, 1/√2]

Directional derivative = [∇f(0, 1)] • u

= [0, 1] × [1/√2, 1/√2] = 0 + 1/√2 = 1/√2

4 0

3 years ago

Karl is making a pot of chili. The recipe calls for StartFraction 3 Over 8 EndFraction cup of chili powder, but Karl only wants

mina [271]

Given:

The recipe calls for $\dfrac{3}{8}$ cup of chili powder.

Karl only wants to use half as much so it won’t be so spicy.

To find:

How much chili powder should Karl use?

Solution:

We have,

Chill power for recipe = $\dfrac{3}{8}$ cup

Chill power used by Karl is half of chill power for recipe.

$\text{Chill power used by Karl}=\dfrac{1}{2}\times \dfrac{3}{8}$ cup $\text{Chill power used by Karl}=\dfrac{3}{16}$ cup

Therefore, $\dfrac{3}{16}$ cup of chili powder should Karl use.

7 0

3 years ago

Find the approximate value of the circumference of a circle with the given radius. Use pi = 3.14. Round your results to one more

svetlana [45]

C = 2<span>πr
C = 2 * 3.14 * 5.1
C = 32.028

You can round that to A. 32.03, because if the decimal after 2 is greater than it, then you round it to the number which is higher than it, which is 3. </span>

4 0

3 years ago

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A rental car cost $60 plus an additional $0.15 per mile. What is the cost of renting a car for one day and driving it 65 miles.

ICE Princess25 [194]

Answer:

$69.75

Step-by-step explanation:

60+0.15x is your expression.

Now, plug in 65 miles for x, as that is the changing value.

60+(0.15*65)

60+9.75

$69.75

7 0

3 years ago