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ludmilkaskok [199]
3 years ago
15

A mother gives her son 2 drops of medicine for every 10kg of body weight how much drops does he need if he weighs 22.8kg

Mathematics
1 answer:
Dmitriy789 [7]3 years ago
5 0
2.28 drops. 3 if rounding up. 2 if rounding down
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X2+9x+20 plz help me with it plz​
ICE Princess25 [194]

Answer:

11x + 20

Step-by-step explanation:

x2 + 9x + 20

2x + 9x + 20

11x + 20

Hope this helps!

4 0
3 years ago
Read 2 more answers
Please help!!!!!WILL MARK BRAINLIEST.<br>what is the lateral area of the cone​?
Ratling [72]

Answer:

Therefore Lateral Area of Cone is 189.97 yd².

Step-by-step explanation:

Given:

Slant height = 12.1 yd

Diameter = 10 yd

∴ Radius = half of Diameter = 10 ÷ 2 = 5 yd

To Find:

Lateral Area of Cone = ?

Solution:

We know that,

\textrm{Lateral Area of Cone} = \pi\times Radius\times \textrm{Slant height}

Substituting the given values we get

\textrm{Lateral Area of Cone}=3.14\times 5\times 12.1\\\\\textrm{Lateral Area of Cone}=189.97\ yd^{2}

Therefore Lateral Area of Cone is 189.97 yd².

4 0
3 years ago
Scores on an exam follow an approximately Normal distribution with a mean of 76.4 and a standard deviation of 6.1 points. What p
klasskru [66]

Answer:

99.89% of students scored below 95 points.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 76.4, \sigma = 6.1

What percent of students scored below 95 points?

This is the pvalue of Z when X = 95. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{95 - 76.4}{6.1}

Z = 3.05

Z = 3.05 has a pvalue of 0.9989.

99.89% of students scored below 95 points.

5 0
3 years ago
Average movie prices in the United States​ are, in​ general, lower than in other countries. It would cost ​$78.73 to buy three t
likoan [24]

Average movie ticket cost in Japan = $17.23

Average movie ticket cost in Switzerland = $ 13.52

Step-by-step explanation:

Let <em>x</em> be the cost of movie ticket in Japan and <em><u>y</u></em> be the cost of movie ticket in Switzerland.

Given 3 ticket in Japan + 2 tickets in Switzerland = $78.73

              ⇒ 3<em>x</em> + 2<em>y</em> = 78.73 – – – – (1)

Given 3 ticket in Switzerland + 2 tickets in Japan = $75.02

              ⇒ 3<em>y</em> + 2<em>x</em> = 75.02

              ⇒ 2<em>x</em> + 3<em>y</em> = 75.02– – – – – (2)

Now, to solve (1) and (2), we multiply equation (1) by 2 and equation (2) by 3.

(1) × 2 ⇒       6<em>x</em> + 4<em>y</em> = 157.46 – – – – (3)

(2) × 3 ⇒       6<em>x</em> + 9<em>y</em> = 225.06 – – – – (4)

Subtract (3) from (4), we get

6<em>x </em>+ 9<em>y</em> – (6<em>x</em> + 4<em>y</em>)= 225.06 – 157.46

⇒ 6<em>x</em> + 9<em>y</em> – 6<em>x </em>– 4<em>y</em>= 67.6

⇒ 5<em>y</em> = 67.6

⇒ <em>y</em> = 13.52

Now substitute <em>y</em> = 13.52 in equation (1), we get,

(1) ⇒ 3<em>x</em> + 2(13.52) = 78.73

⇒ 3<em>x</em> = 78.73 – 27.04

⇒ <em>x</em> = 27.23

Hence, Average movie ticket cost in Japan is $27.23

Average movie ticket cost in Switzerland is $ 13.52.

4 0
4 years ago
What’s the area of the kite? 20 points! &lt;33
Margarita [4]
1200cm

20x50= 1000x1/2x2= 1000
10x20=200x2x1/2=200
1000+200=1200
the area of the kite is 1200 cm
6 0
3 years ago
Read 2 more answers
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