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nataly862011 [7]
3 years ago
9

PLEASEEE SOMEONE HELP ME ON THIS!!!! It’s due in a couple hours

Mathematics
2 answers:
labwork [276]3 years ago
8 0

Answer:

8

Step-by-step explanation:

This to the nearst tenth in decimal

zimovet [89]3 years ago
4 0

Answer:

x = 8.0 m

Step-by-step explanation:

With the angle presented, I'm assuming you know basic trigonometry. We know cosθ = adj/hyp from SOH CAH TOA. We have angle and hypotenuse, so plugging in those values we get cos(20°) = x / 8.5. Solve for x to get 8.5cos(20°) = 7.987387277 m = 8.0 m.

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The mean percent of childhood asthma prevalence in 43 cities is 2.16%. A random sample of 31 of these cities is selected. What i
IceJOKER [234]

Probability that the mean childhood asthma prevalence for the sample is greater than 2.6% is 0.0357 or 3.57 %.

What is Probability ?

Probability is the measure of likelihood of an event.

For a Normal Distribution ,

the z-score formula is given by

\rm Z = \dfrac{X - \mu }{\sigma}

Here \rm \mu\\ is the mean and \rm \sigma\\ is the standard deviation .

It is the measure of the deviation of the data from its central tendency.

Each z-score has a probability value.

It is given in the question that

Mean of 2.16% =  \rm \mu\\ = 2.16

Standard deviation of 1.36% means that  \rm \sigma\\ = 1.36

For Sample of 31 the value of standard deviation is \rm s = \dfrac{\sigma}{\sqrt{n}}

s = 1.36/√31

s = 0.2442

Substituting the values

Z = (2.6 -2.16)/0.2442

Z =1.8

the p value from the graph of z and p , 0.9643

To determine value of probability  more than X is 1 - 0.9643= 0.0357

the

Probability that the mean childhood asthma prevalence for the sample is greater than 2.6% is 0.0357.

To know more about Probability

brainly.com/question/11234923

#SPJ1

6 0
2 years ago
<img src="https://tex.z-dn.net/?f=4x%5E%7B0%7D%20x16x%5E%7B0%7D" id="TexFormula1" title="4x^{0} x16x^{0}" alt="4x^{0} x16x^{0}"
statuscvo [17]

Answer:

64

Step-by-step explanation:

its just how it is

8 0
2 years ago
What is the value of X?​
lozanna [386]

since all sides are equal, which means all angles must also be equal to one another

all angles =60°

solving 7x-3=60

7x=63

x=9

similarly 11 y+5=60

11y=55

y=5

5 0
3 years ago
I have 1 min left plz i need help
FrozenT [24]

Answer: the first, second, and fourth are correct.


Step-by-step explanation:

28-10%=25.2

28-25%=21

28-35%=18.2


3 0
3 years ago
Find the composite area
stepladder [879]

Answer:

Area of the composite figure = 42 in²

Step-by-step explanation:

Composite area of the given figure = Area of the rectangle + Area of the right triangle

Area of the rectangle = Length × Width

                                    = 6 × 5

                                    = 30 in²

Area of the right triangle = \frac{1}{2}(\text{Base})(\text{Height})

                                         = \frac{1}{2}(4)(6)

                                         = 12 in²

Area of the composite figure = 30 + 12

                                                  = 42 in²

7 0
2 years ago
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