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lesantik [10]
3 years ago
6

ANSWER ! 20 characters rule

Mathematics
1 answer:
barxatty [35]3 years ago
5 0

Answer:

-2x + 15y = -24

2x  +  9y  =  24

= 0  = 24y   =0

y = 0

-2x + 15(0) = -24

-2x = -24

-----    ------

2         2  

x = 12

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Instructions: Problem 1 ! Find the missing angle in the image below. Do not include spaces in your answers
sweet-ann [11.9K]

Answer:

40 degrees

Step-by-step explanation:

The 100 degree angle is supplementary to angle CED. This means CED will end up being 80 degrees. Since the angles in all triangles equate to 180 degrees 80 + 60 + angle D must equal 180 degrees. Therefore, angle D has to be 40 degrees.

5 0
3 years ago
A baker is using two different cake molds. A round mold with diameter 8in and height 2in, and a rectangular mold with dimensions
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Answer:   The cake density is 0.454 ounce per cubic inch and the fair price is $0.20 per ounce.  What should be a fair price for each cake?

Step-by-step explanation:The cake density is 0.454 ounce per cubic inch and the fair price is $0.20 per ounce.  What should be a fair price for each cake?

8 0
3 years ago
A university found that 25% of its students withdraw without completing the introductory statistics course. Assume that 30 stude
Morgarella [4.7K]

Answer:

0.0106 = 1.06% probability that 2 or fewer will withdraw

Step-by-step explanation:

For each student, there are only two possible outcomes. Either they withdraw, or they do not. The probability of an student withdrawing is independent of any other student, which means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

25% of its students withdraw without completing the introductory statistics course.

This means that p = 0.25

Assume that 30 students registered for the course.

This means that n = 30

Compute the probability that 2 or fewer will withdraw:

This is:

P(X \leq 2) = P(X = 0) + P(X = 1) + P(X = 2)

In which

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 0) = C_{30,0}.(0.25)^{0}.(0.75)^{30} = 0.0002

P(X = 1) = C_{30,1}.(0.25)^{1}.(0.75)^{29} = 0.0018

P(X = 2) = C_{30,2}.(0.25)^{2}.(0.75)^{28} = 0.0086

P(X \leq 2) = P(X = 0) + P(X = 1) + P(X = 2) = 0.0002 + 0.0018 + 0.0086 = 0.0106

0.0106 = 1.06% probability that 2 or fewer will withdraw

8 0
3 years ago
A kayak rental company charges $25.00 to rent a kayak and $3.50 for each half hour it is used.
pogonyaev

Answer:

Option D (r(t) = 3.50t +25 ; r(8) = 53)

Step-by-step explanation:

The fixed cost to rent the kayak $25. This is the cost which remains fixed irrespective of the usage of the kayak. The variable cost of using the kayak is the cost which depends on the usage of the kayak. It is mentioned that the kayak is used for 4 hours and the company charges $3.5 for every half hour. The cost function is given by:

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4 hours means that there are 8 half-hours. Therefore, t=8. Put t=8 in r(t).

r(8) = 25 + 3.5*(8) = 25 + 28 = 53.

Therefore, Option D is the correct answer!!!

3 0
3 years ago
Read 2 more answers
What Value of N makes the equation true?
Ludmilka [50]
N=25


Mark brainliest please


Hope this helps you
7 0
3 years ago
Read 2 more answers
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