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Elena L [17]
3 years ago
8

13x + 6y = -30

Mathematics
1 answer:
Brilliant_brown [7]3 years ago
5 0
The answer is d, (-2.5,0.75)
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Suppose that the probability density function for the length x in feet of some type of fish caught by sport fishermen is given b
Firdavs [7]

Answer:

The probability that a fish caught by a fisherman is between 0.25 feet and 2 feet long is 0.4375.

Step-by-step explanation:

The probability density function or p.d.f. for the length <em>x,</em> in feet, of some type of fish caught by sport fishermen is :

p(x) = \left \{{{(\frac{1}{4})\ ;\  0\leq x\leq 4 } \atop{0\ ;\ otherwise} \right.

The probability that a fish caught by a fisherman is between 0.25 feet and 2 feet long is:

P(0.25\leq X\leq 2)=\int\limits^{0.25}_{2} {(\frac{1}{4})} \, dx \\=|(\frac{1}{4})x|^{2}_{0.25}\\=(\frac{1}{4})(2-0.25)\\=0.4375

Thus, the probability that a fish caught by a fisherman is between 0.25 feet and 2 feet long is 0.4375.

8 0
3 years ago
Pls solve this math question
Otrada [13]

Answer:

so let's call the unknown number x.

-5/4 x X = 7/2

by changing the subject, X = 7/2 / -5/4

to divide fractions, we turn the fraction we're dividing by upside down and change the sign to multiplication. so X = 7/2 x 4/-5

after multiplying, X =>28/-10

simplified, X = 14/-5

5 0
2 years ago
Nola caminó por un sendero a un ritmo constante durante 10 minutos. Su cambio de elevación fue de -200 pies. Luego continuó cami
Karolina [17]

Answer:

fgrth hetrhw w 4yrty

Step-by-step explanation:

wjy kqgelur o;euro;gwegrg;oycro;a

8 0
2 years ago
The first term of an arithmetic sequence is -5, and the tenth term is 13.
Leokris [45]

Answer:

Step-by-step explanation:

Let d be the common difference.

a₁₀ = a₁ + (10-1)d

13 = -5 + 9d

d = 2

5 0
2 years ago
A. Translate each of the following into algebraic expressions: (1 point each)
myrzilka [38]
A. Translate each of the following into algebraic expressions: (1 point each) 1.x plus y squared ---> x + y^2
2.8 times a number, x, decreased by y  ---> 8x - y
3.the sum of x and y, squared ---> (x + y)^2
4.3 times the difference of x and y ---> 3( x - y)
5.6 less than x cubed --- > x^3 - 6


B. Translate the following phrases into algebraic expressions. Explain, in complete sentences, the difference between the two. (3 points)

´twice the sum of x and y ---> 2(x + y)
´the sum of twice x and y ---> 2x + y

The first one adds first x and y, and then doubles the result, while the second one first doubles de value of x and the adds y.


C. Create your own example of a mathematical phrase you might hear in the real world and provide the translation for it. Be sure to identify what part of the phrase i

The sales of this year exceeded the sales of last year in tweny millions.

y = x + 20,000,000, where x represents the sales of last year and y represents the sales of this year,
5 0
3 years ago
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