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zhuklara [117]
3 years ago
8

17.) Evaluate a/b for a = 4/5 and b = - 9/2

Mathematics
1 answer:
brilliants [131]3 years ago
5 0

Answer:

D

Step-by-step explanation:

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What area is this composite figure??
klemol [59]

This composite figure consists of a right triangle and semicircle

The area of a triangle is: 1/2(bh)

The area of a semicircle is 1/2(pi)(r²)

Plug in the values:


1/2( 12)(8)

=48


1/2(3.14)(4²)

=25.12


25.12+48=73.12


Hope this helped :)


3 0
3 years ago
A pair of shoes is on sale for 15% off.With this discount,customers will save $9 if they buy the shoes.What was the original pri
tiny-mole [99]

15 percent off 9.00 is 7.65

Step-by-step explanation:

The difference is 1.35

3 0
3 years ago
An open box is made from a square piece of cardboard 30 inches on a side by cutting identical squares and turning up the sides.
pychu [463]

Step-by-step explanation:

A)

The length of the box is 30 − 2x inches.

The width of the box is 30 − 2x inches.

The height of the box is x inches.

So the volume is:

V = x (30 − 2x)²

B)

V(3) = 3 (30 − 6)² = 1728

V(4) = 4 (30 − 8)² = 1936

V(5) = 5 (30 − 10)² = 2000

V(6) = 6 (30 − 12)² = 1944

V(7) = 7 (30 − 14)² = 1792

As x increases, the volume of the box increases to a maximum and then decreases.

C)

The ends of the domain occur when V = 0.

0 = x (30 − 2x)²

x = 0 or 15

So the domain is (0, 15).

3 0
3 years ago
The graph 4x^2-4x-1 is shown. Use the grpah to find the estimates for the solutions of 4x^2-4x-1=0 and 4x^2 - 4x-1=2
Darina [25.2K]

Answer:

a) The estimates for the solutions of 4\cdot x^{2}-4\cdot x -1 = 0 are x_{1}\approx -0.25 and x_{2} \approx 1.25.

b) The estimates for the solutions of 4\cdot x^{2}-4\cdot x -1 = 2 are x_{1}\approx -0.5 and x_{2} \approx 1.5

Step-by-step explanation:

From image we get a graphical representation of the second-order polynomial y = 4\cdot x^{2}-4\cdot x -1, where x is related to the horizontal axis of the Cartesian plane, whereas y is related to the vertical axis of this plane. Now we proceed to estimate the solutions for each case:

a) 4\cdot x^{2}-4\cdot x -1 = 0

There are two approximate solutions according to the graph, which are marked by red circles in the image attached below:

x_{1}\approx -0.25, x_{2} \approx 1.25

b) 4\cdot x^{2}-4\cdot x -1 = 2

There are two approximate solutions according to the graph, which are marked by red circles in the image attached below:

x_{1}\approx -0.5, x_{2} \approx 1.5

5 0
3 years ago
What is the slope of the line
SOVA2 [1]

Answer:

-2/3 Give brainliest

Step-by-step explanation:

7 0
3 years ago
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