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3 years ago

Pls help!!! i don’t understand how to solve this

Mathematics

1 answer:

Novay_Z [31]3 years ago

7 0

Answer:

Average velocity = 1

Step-by-step explanation:

f(3) = 3² - 3(3) + 4 = 4

f(1) = 1² - 3(1) + 4 = 2

$Velocity = \frac{f(3) - f(1)}{3-1} =\frac{4-2}{3-1} =\frac{2}{2} =1$

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Greeley [361]

40 - 4 = 36

average = 36/9 = 4

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3 years ago

What is the area, in square inches, of the rectangle? Show your work!!

erma4kov [3.2K]

Answer:

$\huge\boxed{\sf 7 \frac{13}{20} \ in. ^2}$

Step-by-step explanation:

Length of the rectangle = $\displaystyle 2 \frac{1}{4} = \frac{9}{4} \ in.$

Width of the rectangle = $\displaystyle 3 \frac{2}{5} = \frac{17}{5} \ in.$

<u>Area of the rectangle:</u>

= Length × Width

$\displaystyle = \frac{9}{4} \times \frac{17}{5} \\\\= \frac{9 \times 17}{4 \times 5} \\\\= \frac{153}{20} \\\\= 7 \frac{13}{20} \ in.^2\\\\\rule[225]{225}{2}$

4 0

2 years ago

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Cual es la regla del consiente

Vadim26 [7]

Answer:

Generalmente significa que en la situación dada, se debe obtener el consentimiento.

6 0

3 years ago

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I have to find the value of x

Debora [2.8K]

Answer:

x = 10

Step-by-step explanation:

To find x, write a proportion between the side lengths for the similar triangles in the figure.

$\frac{x+5}{x}=\frac{18}{12}$

To solve, cross multiply and isolate x.

(x+5)(12) = 18(x)

12x + 60 = 18x

60 = 6x

10 = x

4 0

3 years ago

The speed of a stream is 4 mph. A boat travels 8 miles upstream in the same time it takes to travel 16 miles downstream. what is

sasho [114]

The speed of the stream = 4 mph.

Let us assume speed of the boat in still water = x mph.

Total speed upstream = (x-4) mph.

Total speed downstream = (x+4) mph.

We know, time, speed and distance relation.

Time = Distance / Speed.

Total time taken upstream = 8 / (x-4)

Total time taken downstream = 16/(x+4).

<em>Time taken upstream = time taken downstream.</em>

Therefore,

8 / (x-4) = 16/(x+4).

On cross multiplication, we get

16(x-4) = 8(x+4).

16x - 64 = 8x +32.

Adding 64 on both sides, we get

16x - 64+64 = 8x +32+64

16x = 8x + 96.

Subtracting 8x from both sides, we get

16x-8x = 8x-8x + 96.

8x = 96.

Dividing both sides by 8, we get

x = 12.

<h3>Therefore, 12 mph is the speed of the boat in still water.</h3>

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3 years ago

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