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Mathematics

2 answers:

Nana76 [90]3 years ago

5 0

Answer:

4.4 km/h

Step-by-step explanation:

From the graph you can see she was at the shop after 30 minutes. If you travel 2.2 km in 30 minutes, your speed is 2.2 / 0.5 = 4.4 km/h

So the trick is to express the 30 minutes as 1/2 hour.

kramer3 years ago

3 0

Answer:

4.4 km/h

Step-by-step explanation:

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Solve for x under the assumption that x < 0. Select the correct graph!

bixtya [17]

X-5/x<4
times both sides by x
x²-5<4x
minus 4x both sides
x²-4x-5<0
factor
(x-5)(x+1)<0
hmm
special points at x=-1 and x=5
when x=-2, we get 10<0 which is false
when x=0, we get -5<0 which is true
when x=6, we get 7<0 which is false
so the solution must be the range between -1 and 5

so if x<0
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just pick the 3rd grah

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3 years ago

Proof triangles

Klio2033 [76]

No, two sides the same is not enough.
You need more proof.

Side, angle, side. (SAS).
AD = DC
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BD = BD

By the SAS property, the two triangles are the same.

I think this is one way to prove it...

Or, similarly...use ASA, (Angle, side, angle).

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4 years ago

100 POINTS! PLEASE HELP ME

choli [55]

Answer:

f(n) = 2 * f(n - 1) + 1

Step-by-step explanation:

First, notice that the difference between each neighboring term is different, so it is not linear, so we can rule out A and B. Now, it's all about finding a pattern. Eventually, through guess and check, you will get 2 * f(n - 1) + 1.

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4 years ago

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The slope of a line equals the “run over the rise.”<br> True or false

GalinKa [24]

Answer:

False

Step-by-step explanation:

The slope of a line is

Change in y over change in x

This is also known as rise over run