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svet-max [94.6K]
3 years ago
10

Please help......

Mathematics
1 answer:
rosijanka [135]3 years ago
5 0
1. using 2 dots that are on the blue line (0,72) and (6,69)
find the slope:

slope = change in Y over change in x = 69 - 72 / 6-0 = -3 / 6 = -1/2
 equation would be y = -1/2x + 72

2. y = -1/2x+72 = -1/2(30) +72 = -15 +72 = 57 beats per minute

3. replaced x in the equation with 30 to find the beats per minute for exercising 30 minutes

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The price of an item has been reduced by 40%. The original price was $60. What is the price of the item now?
erik [133]
To reduce the item by 40%, you first need to find the 40% of 60. Multiply 0.4*60 and you will get 24. That is 40%. Now you need to subtract that from the original. 60-24 is 36 dollars and that is your answer.
4 0
3 years ago
Alexia set up the tent below in case it rained during the barbecue.​
kherson [118]

Answer:

Is this the question you are trying to ask?

-Alexia set up the tent below in case it rained during the barbecue.Which equation shows how to determine the volume of the tent?-

Bc this doesn't even have a question mark. "Alexia set up the tent below in case it rained during the barbecue.​" haha

4 0
3 years ago
Astronomers treat the number of stars X in a given volume of space as Poisson random variable. The density of stars in the Milky
cupoosta [38]

Answer:

Explained below.

Step-by-step explanation:

The random variable <em>X</em> is defined as the number of stars in a given volume of space.

X\sim \text{Poisson}\ (\lambda=1)

The probability mass function of <em>X</em> is:

p_{X}(x)=\frac{e^{-\lambda}\lambda^{x}}{x!}

(7)

Compute the probability of exactly two stars in 16 cubic light-years as follows:

P(X=2)=\frac{e^{-1}\times 1^{2}}{2!}=\frac{e^{-1}}{2}=\frac{0.36788}{2}=0.18394\approx 0.184

(8)

Compute the probability of three or more stars in 16 cubic light-years as follows:

P(X\geq 3)=1-P(X

(9)

In 16 cubic light years there is only 1 star.

Then in 1 cubic light years there will be, (1/16) stars.

Then in 4 cubic light years there will be, 4 × (1/16) = (1/4) stars.

(10)

In 16 cubic light years there is only 1 star.

Then in 1 cubic light years there will be, (1/16) stars.

Then in <em>t</em> cubic light years there will be, [<em>t</em> × (1/16)] stars.

7 0
3 years ago
Which statement is true? A dilation is not a function because a point on the pre-image could be mapped to more than one point on
lianna [129]

Here the answer is

D) A dilation is a function because every point on the pre-image corresponds to exactly one point on the image.

Definition of Dilation

Dilation stretches or shrinks the original figure.  Each pre-image point has exactly one point on the image which multiplied or reduced the scale factor.

Thank you

6 0
3 years ago
Read 2 more answers
A chair's regular price is $349. It is on clearance for 30% off, and a customer uses a
Nady [450]

Answer:

68.055

Step-by-step explanation:

349-30%=104.7-15%=68.055

3 0
3 years ago
Read 2 more answers
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