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3 years ago

What is the mean of -3,-8,12,-15,9

1 answer:

6 0

Mean = sum of the observations
--------------------------------
<span> number of observations
</span>=> -3 + (-8) + 12 +(-15)+ 9
-----------------------------------
5
=> mean = -1 ..

Hope it helps!!!!

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A belt and a pair of pants cost $490 altogether. A bag costs twice as much

m_a_m_a [10]

Answer:

$196

Step-by-step explanation:

Lets assume,

cost of a belt = 'x'

cost of a pair of pants = 'y'

Now, According to the question;

x + y = 490;
cost of a bag = twice the cost of belt = 2x;
cost of a pair of pants = twice the cost of bag

⇒ y = 2×2x ⇔ 4x

hence, by subtituting the values in equation' we get;

⇒ x + 4x = 490

⇒ 5x = 490

⇒ x = 98

So, the difference between the cost of the pair of pants and the bag ;

⇒ y - 2x

⇒ 4x - 2x

⇒ 2x = 2×98 = 196.

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3 years ago

Help me please ( on the image )

Mrac [35]

Answer:

$\frac{\pi}{3}$ radians

Step-by-step explanation:

Number of hours on a clock = 12

Since, measure of a circle at the center = 360°

Measure of central angle formed by the arc between each number (representing hours) = $\frac{360}{12}$

= 30°

Central angle formed by the arc intercepted by the hands of the clock at 8:00 = 4 × 30°

= 120°

Therefore, angle measure in radians = $\frac{\pi }{360}\times (120^0)$

= $\frac{\pi }{3}$

Angle formed by the hands of the clock at 8:00 = $\frac{\pi}{3}$ radians

6 0

3 years ago

Please help 15 points worth

boyakko [2]

Answer:

Step-by-step explanation:

A line is on the 40 degree angle and AOX is the <.

4 0

3 years ago

Estimate [5 7/8 - 2 3/20] + 1 4/7

riadik2000 [5.3K]

change into improper fraction then do the problem then turn back into mixed number

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3 years ago

Problem #2 A, B,C,D,E

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2x+4

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(x/5)+6

(x+6)squared

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4 years ago

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