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Degger [83]
3 years ago
15

Which statement about the data is true

Mathematics
1 answer:
Alina [70]3 years ago
7 0

Answer:

D. A value of 0.9 is more than 2 standard deviations from the mean.

Step-by-step explanation:

A is wrong, because the standard deviation is +/-0.15 (the measure up or down from the mean)

B is wrong, because the mean is exactly 0.5

C is wrong, because 1 standard deviation up from the mean is 0.65, and 0.7 is outside of that.

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Isolate the h in c=25h+350
Sati [7]
Subtract 350 from both sides then divide both sides by 25.

(c-350)/25 = h
7 0
3 years ago
X decreased by 50 % and then increased by 50%<br> which number is heater and by how much
dimaraw [331]

Answer:

baddie uwu

Step-by-step explanation:

harder daddy harder

6 0
2 years ago
A boat travels upstream for 48 miles in 3 hours and returns in 2 hours traveling downstream in a river. What is the rate of the
alekssr [168]

Answer:

20 mph and 4 mph

Step-by-step explanation:

GIVEN: A boat travels upstream for 48 miles in 3 hours and returns in 2 hours traveling downstream in a river.

TO FIND: What is the rate of the boat in still water and the rate of the current.

SOLUTION:

Let the speed of boat in still water be s and speed of current be a.

\therefore speed of water in upstream =s+a

  speed of water in downstream =s-a

As  speed=\frac{distance}{time}

s+a=\frac{48}{3}=16

s-a=\frac{48}{2}=24

Solving both we get

s=20\text{ mph}

a=4\text{ mph}

Hence speed of boat in still water and rate of current is 20mph and 4mph respectively.

3 0
3 years ago
What is true regarding two adjacent arcs created by two<br> intersecting diameters?
Juli2301 [7.4K]

Given:

Two diameters intersect each other.

To find:

The correct statement regarding two adjacent arcs created by two  intersecting diameters.

Solution:

We know that, two diameter intersect each other at origin and measure of arc is equal to the corresponding angle generated by the intersection of diameters.

If two lines intersect each other then we get 4 angles and sum of any two adjacent angles is 180°.

It means the sum of any two adjacent central angles generated by the intersection of diameters is 180°.

So, the sum of two adjacent arcs created by two  intersecting diameters is 180°.

Therefore, the correct option is C.

7 0
2 years ago
local radio station WMTH schedules 2 minutes of news for every 20 minutes of music complete the ratios
Katen [24]

Answer:

7/20

Step-by-step explanation:

because it is 2 minutes of news for every/ 20 minutes of music.

4 0
2 years ago
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