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2 years ago

How do i solve this?

Mathematics

1 answer:

tigry1 [53]2 years ago

7 0

Answer:

x = 5

Step-by-step explanation:

The corresponding segments are proportional, so you can write any of several equations relating the different segment lengths. Here's one way:

top segment/bottom segment = x/(x+5) = (x-2)/(x+1)

Multiply by the product of denominators:

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

x² +x = x² +3x -10 . . . . . eliminate parentheses

10 = 2x . . . . . . . . . . . . . . add 10 -x -x² to both sides of the equation

5 = x . . . . . divide by 2

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A+b+c=31 2a+3b+4c=105 who's a,b,c

Alik [6]

Answer:

begin{aligned}

& x = \frac{D_x}{D} = \frac{-616}{-154} = 4 \\

& y = \frac{D_y}{D} = \frac{ 616}{-154} = -4 \\

& z = \frac{D_z}{D} = \frac{-770}{-154} = 5

\end{aligned} $begin{aligned} & x = \frac{D_x}{D} = \frac{-616}{-154} = 4 \\ & y = \frac{D_y}{D} = \frac{ 616}{-154} = -4 \\ & z = \frac{D_z}{D} = \frac{-770}{-154} = 5 \end{aligned}$

Step-by-step explanation:

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3 years ago

Is this right? if it isn't, what IS right?

umka2103 [35]

Answer:

You are wrong and the correct answer is vaunted.

Step-by-step explanation:

Why? Because it would be the only applicable word for this sentence.

Omnipotent: Having unlimited power; able to do anything.

Overt: One or shown openly; plainly or readily apparent, not secret or hidden.

Annihilated: Destroy utterly; obliterate.

Vaunted: Praised or boasted about, especially in an excessive way.

6 0

2 years ago

A lunch menu has 4 different sandwiches, 2 different soups, and 5 different drinks. How many different lunches consisting of a s

oksian1 [2.3K]

To find out all of the possible combinations, just multiply the amount of each variable:

4*2*5 = 40

There are 40 different combinations consisting of a sandwich, soup, and drink.

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3 years ago

The cost of internet access at a café is a function of time. The costs for 8, 25, and 40 minutes are shown. Write an equation in

PolarNik [594]

Answer:

$y=0.17x+3$
The cost of surfing the web at the café for one hour: $\$13.2$

Step-by-step explanation:

The equation of the line in Slope-Intercept form is:

$y=mx+b$

Where "m" is the slope and "b" is the y-intercept.

Take two points and substitute them into the formula for calculate the slope (The formula is $m=\frac{y_2-y_1}{x_2-x_1}$ ).

Having these points:

$(8,4.36)$ and $(40,9.80)$

You can identify that:

$y_2=4.36\\y_1=9.80\\\\x_2=40\\x_1=8$

Then, the slope is:

$m=\frac{4.36-9.80}{40-8}=0.17$

Substitute the slope and the coordinates of any point on the line into the equation $y=mx+b$ and then solve for "b":

$4.36=0.17(8)+b\\\\4.36-1.36=b\\\\b=3$

Therefore, equation in Slope-Intercept form that represents the function is:

$y=0.17x+3$

Since 1 hour hour has 60 minutes, you need to substitute $x=60$ into the equation and then evaluate, in order to find the cost of surfing the web at the café for one hour. Then:

$y=0.17(60)+3\\\\y=13.2$

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2 years ago

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k0ka [10]

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2 years ago