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2 years ago

Solve 11 and 13 pleaseeeee

Mathematics

1 answer:

nata0808 [166]2 years ago

6 0

32 degees, 43.8 degrees, 53.8, 63.8 Yes they are proportional

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If 5(y+10)=40, find the value of 1\4y.

PolarNik [594]

Expand the brackets:
5y + 50 = 40
minus 50 on both sides to get 5y alone
5y = -10
divide both sides by 5 to find y
y= -2
∴ 1/4y = -0.5

6 0

3 years ago

A Dr. needs to prescribe a certain medication for her patient. The amount of medicine prescribed per day is based on the weight

aniked [119]

150/2=75 75(3mg)= 225mg/day

8 0

3 years ago

A human’s DNA code, found in nearly all body cells, can be condensed into chromosomes.

Firlakuza [10]

Answer:

I'm a alien, sorry.

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Simplify the following expression <br> (X9 Y5) -4

KATRIN_1 [288]

Answer:

Step-by-step explanation:

$( x^{9} y^{5} )^{-4} \\x^{(9)(-4)} y^{(5)(-4)} \\x^{-36}y^{-20} \\\frac{1}{x^{36}y^{20}}$

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2 years ago

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When Noah goes bowling, his scores are normally distributed with a mean of 150 and a standard deviation of 12. What is the proba

Zarrin [17]

Answer:

The probability of his score being between 135 and 167 is 0.8151 or (0.8151*100=81.51%)

Step-by-step explanation:

Given that:

Mean = μ = 150

SD = σ = 12

Let x1 be the first data point and x2 the second data point

We have to find the z-scores for both data points

x1 = 135

x2 = 167

So,

$z_1 = \frac{x_1-mean}{SD}\\= \frac{135-150}{12}\\=\frac{-15}{12}\\=-1.25$

And

$z_2 = \frac{x_2-mean}{SD}\\z_2 =\frac{167-150}{12}\\=\frac{17}{12}\\= {1.416}$

We have to find area to the left of both points then their difference to find the probability.

So,

Area to the left of z1 = 0.1056

Area to the left of z2 = 0.9207

Probability to score between 135 and 167 = z2-z1 = 0.9027-0.1056 = 0.8151

Hence,

The probability of his score being between 135 and 167 is 0.8151 or (0.8151*100=81.51%)

3 0

2 years ago