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Anna35 [415]
3 years ago
14

How many 4X4in squares will i need to cover 20ft high 10 ft wide wall

Mathematics
1 answer:
IRINA_888 [86]3 years ago
8 0
Find the area of the squares.
4 ×4 = 16

Find the area of the wall.
20 × 10 =200

Divide 200 by 16.
200 ÷ 16 = 12.5

You need 12.5 squares.
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g The tangent plane to z=f(x,y) at the point (1,2) is z=5x+2y−10. (a) Find fx(1,2) and fy(1,2). fx(1,2)= Number fy(1,2)= Number
murzikaleks [220]

Answer:

The values for Fx(1,2) and Fy(1,2) are 5 and 2 respectively.

Approximation at points (1.1,1.9) is 0.7

Step-by-step explanation:

Given:

Tangent plane to  a surface z=5x+2y-10 as the function at point (1,2)

To find :

f(x,y) at (1,2)

partial derivatives of function w.r.t. (x and y) and value of that function at given points.

Solution:(refer the attachment also)

Now we know that

the equation of tangent plane at given points to the surface is given by,

f(x1,y1,z1) and z=f(x,y)

z-z1=Fx(x1,y1)*(x-x1)+Fy(x1,y1)*(y-y1)

here Fx(x1,y1) and Fy(x1,y1) are the partial derivatives of x and y.

now

taking partial derivative w.r.t. x we get

Fx(x1`,y1)=\frac{d}{dx} (5x+2y-10)

=5.

Then w.r.t y we get

Fy(x1,y1)=

\frac{d}{dy}(5x+2y-10)

=2.

The values for Fx(1,2) and Fy(1,2) are 5 and 2 respectively.

Using the Linearization or linear approximation we get

L(x,y)=f(x1,y1)+Fx(x,y)*(x-x1)+Fy(x,y)(y-y1)

=-1+5(x-1)+2(y-2)

=5x+2y-10

Approximation at F(1.1,1.9)

=5(1.1)+2(1.9)-10

=5.5+3.8-10

=0.7

Approximation at points (1.1,1.9) is 0.7

6 0
3 years ago
(1/3)^3 = ____?<br><br> Im just working in school cheating on khan acad lol
Alexus [3.1K]

Answer:

Step-by-step explanation:

The answer is 1/27

due to

(1/3)^3 = [(1)^3]/[3^3] =1/27

Best regards

3 0
3 years ago
224 fl oz equals how many gallons
Eddi Din [679]
1.75 google got you
3 0
3 years ago
A radio is giving away tickets to a play. They plan to give away tickets for seats that cost $10 and $20. They want to give away
Lemur [1.5K]
Then maybe do 20 times 28
3 0
3 years ago
Read 2 more answers
If the confidence level is decreased and the standard deviation and sample size stay the same, then the margin of error will be
Eduardwww [97]

Answer:

true

Step-by-step explanation:

If the standard deviation is increased and the sample size and confidence level stay the same, then the margin of error will also be increased

3 0
3 years ago
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