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JulijaS [17]
3 years ago
9

Speed=60 km/h time= 2 hours 20 minutes, what is the distance?

Mathematics
1 answer:
daser333 [38]3 years ago
8 0

Answer:

26km

Step-by-step explanation:

d=speed × time

d=60×2.33

d= 140km

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Name a point that is between 50 and 60 units away from (7,-2) and state the distance between the two points.
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Let the required point be (a,b)

The distance of (a,b) from (7,-2) is

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But this distance needs to be betweem 50 & 60

So

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2500 < (a-7)² + (b+2)² < 3600

Let a = 7

So we have

2500 < (b+2)² <3600

b+2 < 60    or  b+2 > -60   => b <58 or b > -62

Also

b+2 >50    or b + 2 < -50  => b >48 or B < -52

Let us take one value of b < 58 say b = 50

So now we have the point as (7, 50)

The other point is (7,-2)

Distance between them

= \sqrt{(7-7)^2+(50+2)^2}= \sqrt{(52)^2}=52

This is between 50 & 60

Hence one point which has a distance between 50 & 60 from the point (7,-2) is (7, 50)


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What is the area of a triangle.
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Answer:

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Answer:  The first option with sss as part of the proof

Step-by-step explanation:

The lengths of the arcs drawn in the constructions are the same, so when the line is drawn, the lengths of the sides will all be the same.  SSS is proof of congruence.

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Answer:

The correct option is C) The results were not statistically significant but were practically significant.

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Consider the provided information.

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We reject the null hypothesis if p value is less than α.

We are fail to reject null hypothesis if p value is greater or equal to α.

Here p value is greater than 0.05.

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Therefore, the correct option is C) The results were not statistically significant but were practically significant.

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2 years ago
It is 64º F at the 5000-foot level of a mountain, and 48º F at the 10,000-foot level of the mountain. Write a linear equation, i
Eduardwww [97]

Answer:

T = - 3.2e + 80

Step-by-step explanation:

Given the following :

e = elevation in thousands of feets

T = temperature (°F)

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y = ; m = slope, c = intercept

64 = m5 + c - - - - (1)

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From (1)

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Substitute c = 64 - m5 into (2)

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Inserting our c and m values into T = me + c

T = - 3.2e + 80

Where e is in thousands of feet

T is in °F

8 0
3 years ago
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