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3 years ago

Evaluate each expression please

Mathematics

1 answer:

Firlakuza [10]3 years ago

5 0

13. Is 18 15. Is 86 17 is 5 19 is 15 21 is 24 23 is 29

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Writing in Slope-Intercept Form, 4 Ways (3, 2) & (-3, -4)<br> help plz:)

AVprozaik [17]

Answer:

$let \: slope \: be \: s \\ s = \frac{( {y}^{1} - {y}^{o} ) }{( {x}^{1} - {x}^{o} ) } \\ s = \frac{( - 4 - 2)}{( - 3 - 3)} \\ s = \frac{ - 6}{ - 6} \\ s = 1$

8 0

3 years ago

Explain how you can use a model to find 6x17

FromTheMoon [43]

Answer:

6*17

6*7=42

6*17=42

6*17=60

6*17=42+60

=102

Step-by-step explanation:

7 0

3 years ago

Solutions for x2 −22x+121=49

slamgirl [31]

The answer is d I think

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2 years ago

A street light is mounted at the top of a 15-ft-tall pole. A man 6 ft tall walks away from the pole with a speed of 4 ft/s along

mina [271]

Answer:

The tip of the man shadow moves at the rate of $\frac{20}{3} ft.sec$

Step-by-step explanation:

Let's draw a figure that describes the given situation.

Let "x" be the distance between the man and the pole and "y" be distance between the pole and man's shadows tip point.

Here it forms two similar triangles.

Let's find the distance "y" using proportion.

From the figure, we can form a proportion.

$\frac{y - x}{y} = \frac{6}{15}$

Cross multiplying, we get

15(y -x) = 6y

15y - 15x = 6y

15y - 6y = 15x

9y = 15x

y = $\frac{15x}{9\\} y = \frac{5x}{3}$

We need to find rate of change of the shadow. So we need to differentiate y with respect to the time (t).

$\frac{dy}{t} = \frac{5}{3} \frac{dx}{dt}$ ----(1)

We are given $\frac{dx}{dt} = 4 ft/sec$ . Plug in the equation (1), we get

$\frac{dy}{dt} = \frac{5}{3} *4 ft/sect\\= \frac{20}{3} ft/sec$

Here the distance between the man and the pole 45 ft does not need because we asked to find the how fast the shadow of the man moves.

7 0

3 years ago

The distance between the two points (4,1) and (9,1) is

Rzqust [24]

Answer:

5 units. Since they have the same y coordinate the x coordinate determines the distance from each other. In the case 9-4=5.

6 0

3 years ago