A side of 6 feet, and a 120° angle<br> A. One<br> B. None. C. Many

I need help ASAP.........

aliina [53]

Answer:

it will take 20 minutes for her to weed all of her garden

Step-by-step explanation:

8 minutes=40% 16 minutes= 80% 20 minutes=100%

plz mark brainliest

7 0

2 years ago

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What is the value of y?Exaplain what the coordinates repersent

FinnZ [79.3K]

Answer:

(1, 35) means that $35 is the cost per hour of hiring a face painter.

Step-by-step explanation:

Notice that this is a linear function that goes through the origin and also through the point (5, 175) which according to the data plotted in both axis, means that for 5 hours of service, the cost is $175.

One can calculate the slope of this line as that of the segment that joins (0, 0) with (5, 175) as:

slope = (175 - 0) / (5 - 0) = 175 / 5 = 35 / 1

Notice as well that such slope reads the amount of dollars to hire a face painter for ONE hour (so it is the rate per hour for hiring a face painter).

So the point (1 , y) should be completed as: (1, 35) and means "the rate per hour for hiring a face painter."

5 0

2 years ago

According to data from the 2010 United States Census, 71.6% of the total United States population was over the age of 20. Suppos

Luden [163]

Answer:

Mean is 0.6.

Standard deviation is 0.059

Step-by-step explanation:

The first step is finding the sample proportion p.

Suppose Maria, a researcher, takes a random sample of 70 Americans and finds that 42 are over the age of 20.

This means that $p = \frac{42}{70} = 0.6$

What are the mean and standard deviation of the sampling distribution of p?

Mean:

The mean of a proportion is the same as the proportion. So the mean is 0.6

Standard deviation:

Proportion p in a sample of size n. The standard deviation is:

$s = \sqrt{\frac{p(1-p)}{n}}$

Sample size 70, so:

$s = \sqrt{\frac{0.6*0.4}{70}} = 0.059$

5 0

3 years ago

A statue is mounted on top of a 21 foot hill. From the base of the hill to where you are standing is 57feet and the statue subte

puteri [66]

Please find the attached diagram for a better understanding of the question.

As we can see from the diagram,

RQ = 21 feet = height of the hill

PQ = 57 feet = Distance between you and the base of the hill

SR= h=height of the statue

$\angle SPR=7.1^0$ =Angle subtended by the statue to where you are standing.

$\angle x$ = $\angleRPQ$ which is unknown.

Let us begin solving now. The first step is to find the angle $\angle x$ which can be found by using the following trigonometric ratio in $\Delta PQR$ :

$tan(x)=\frac{RQ}{PQ}=\frac{21}{57}$

Which gives x to be:

$x=tan^{-1} (\frac{21}{57})\approx 20.22^{0}$

Now, we know that $\angle x$ and $\angle SPR$ will get added to give us the complete angle $\angle SPQ$ in the right triangle $\Delta PQS$ .

We can again use the tan trigonometric ratio in $\Delta PQS$ to solve for the height of the statue, h.

This can be done as:

$tan(\angle SPQ)=\frac{SQ}{PQ}$

$tan(7.1^0+20.22^0)=\frac{SR+RQ}{PQ}$

$tan(27.32^0)=\frac{h+21}{57}$

$\therefore h+21=57\times tan(27.32^0)$

$h\approx8.45 feet$

Thus, the height of the statue is approximately, 8.45 feet.

5 0

2 years ago

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PRE CALC QUESTION, PLEASE HELP

strojnjashka [21]

For applies= associative and distributive
and for doesnt apply = commutative.

im not 100 sure for the distributive answer but ik the other ones are right

4 0

3 years ago

A side of 6 feet, and a 120° angle A. One B. None. C. Many