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1 year ago

How many odd 2-digit positive odd integers greater than 50 are there?

Mathematics

1 answer:

Oduvanchick [21]1 year ago

7 0

Answer:

Should be 25

Step-by-step explanation:

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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

2 years ago

Here is the other question i was gonna mention, Ace =.= i would put it in the comments but i dont want to deal with brainly bein

navik [9.2K]

Answer:

a.) 9, -9

b.) 2(sqrt)15, -2(sqrt)15

c.) 4, -2+2i(sqrt)3, -2-2i(sqrt)3

d.) 3(sqrt)75

(some of the numbers are placed differently than I wrote them so here are screenshots- pls look at them rather than what I wrote ;w;)

3 0

2 years ago

Order from the fractions least to greatest <br> 1/6 ,2/5 ,3/5 ,3/7

Veronika [31]

What you want to do is find the comon demominator and than go from rhere pluse you should be able to go and look back at the lesson if you dont get ut well its like that for me

6 0

3 years ago

Reuben drove 260 miles using 12 gallons of gas. At this rate, how many gallons of gas would he need to drive miles

KATRIN_1 [288]

Answer:

286 miles / x gallons = 15miles per gallon.

286/15 = x = approximately 19.07 gallons.

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

A garden store has the following miscellaneous bulbs in a basket:

ArbitrLikvidat [17]

Okay. Since we know that the customer before them bought one of each type of bulb, we can subtract one bulb from each type so now, here is what the store has:

5 amaryllis

6 daffodils

3 lilies

2 tulips

Next, let’s find the probability of the customer picking an amaryllis.

We know there are 5 amaryllis, so we can put that as the numerator.

Next, we have to add up all the flowers to get the denominator.

5+6+3+2

I got 16.

So now we have 5/16

So, that is our answer! 5/16, or as a decimal 0.3125, or as a percentage 31.25%.

Hope this helps! Comment if you have any questions! :)

4 0

3 years ago