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Rudiy27
2 years ago
11

How i can answer this question

Mathematics
2 answers:
timurjin [86]2 years ago
8 0

Answer:

B,C and D

Step-by-step explanation:

They all expand back to 16x + 20.

sweet-ann [11.9K]2 years ago
7 0

Answer:

B

D

C

Glad I coild help you out.

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The length of a rectangle is 2m longer than its width.
blsea [12.9K]

Answer:

35m

Step-by-step explanation:

length = 2+w

width = w

Perimeter = 2(length)+2(width)

24 = 2(2+w)+2(w) =  4+2w+2w = 4+4w

24=4+4w

4w=20

w=5

width =5

length = 2+5 = 7

Area = (length)(width) = 5(7) = 35m

8 0
3 years ago
On his vacation, Chad spent 1/8 of the day swimming, 1/6 of the day shopping, and 1/4 of the day water skiing. How much of the d
Anastaziya [24]

Answer:

11/24

Step-by-step explanation:

First find the common denominators of each fraction:

The common denominator of each fraction is 24

  • 1/8 multiplied by 3 is 3/24
  • 1/6 multiplied by 4 is 4/24
  • 1/4 multiplied my 6 is 6/24

add these fractions up

3/24 + 4/24 + 6/24 = 13/24

subtract 24/24 - 13/24 = 11/24

6 0
3 years ago
Identify any extrema of the function by recognizing its given form or its form after completing the square. Verify your results
Andrews [41]

Answer:

Step-by-step explanation:

Given that,

g(x, y) = 5 - (x - 3)² - (y + 2)²

Let find the grad of the function,

The grad of a function is defined as

∇g= ∂g/∂x •i + ∂g/∂y •j + ∂g/∂z •k

∇g = gx•i + gy•j + gz•k

gx = -2(x-3) = -2x+6

gy = -2(y+2) = -2y -4

∇g = (-2x+6) •i + (-2y-4)•j

We have a maximum or a minimum If g conservative, then, ∇g = 0i +0j

Then comparing this to the grad of the function

(-2x+6) •i + (-2y-4)•j = 0i +0j

Then, -2x+6 = 0

2x=6

x = 3

Also, -2y-4=0

-2y=4

y = -2

Then, g(x, y) = 5 - (x - 3)² - (y + 2)²

g(x, y) = 5 - (3 - 3)² - (-2 + 2)²

g(x, y) = 5

So the critical point is (3, -2, 5)

gx =-2x+6

Second derivative of gx with respect to x

gxx=-2

gy=-2y-4

Second derivative of gy with respect to y

gyy=-2

Second derivative of gx with respect to y

gxy =0

d =gxxgyy - (gxy)²

Then, gyy=gxx

d = -2×-2 -0²

d = 4-0=4

Since d>0

Since d is greater than 0, then, it is not a chair points.

Then, since gxx=-2<0, gyy=-2<0

Cause the second derivative in x (or in y) is less than zero, then the point is relatively maximum

So the maximum point is (3, -2, 5).

6 0
3 years ago
I NEED HELP ASAP
DIA [1.3K]

Answer:

y = \frac{3}{2} x + 13

Step-by-step explanation:

1) Use point-slope formula y-y_1 = m (x-x_1) to find the slope-intercept form (or y = mx + b form) of the equation. m represents the slope, and x_1 and y_1 represent the x and y values of a point the line intersects. So, substitute \frac{3}{2} for m, -4 for x_1, and 7 for y_1. Then, simplify and isolate y on the left side like so:

y-(7) = \frac{3}{2} (x - (-4)) \\y -7 = \frac{3}{2} (x + 4) \\y - 7 = \frac{3}{2} x + 6\\y = \frac{3}{2} x + 13

3 0
3 years ago
I went to the mall to buy four shirts that cost $6.00 dollars each. If you buy three shirts and get the other one 20% off. How m
Mice21 [21]
I think it would be It would be 4.80
5 0
3 years ago
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