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grigory [225]
3 years ago
9

Plzzzzzzzzz help 10 points and will mark brainiest

Mathematics
2 answers:
mixer [17]3 years ago
5 0

Answer:

2.8 < x < 5.4

Step-by-step explanation:

Given 2 sides of a triangle then the third side is in the range

difference of 2 sides < x < sum of 2 sides , that is

4.1 - 1.3 < x < 4.1 + 1.3 , then

2.8 < x < 5.4

melamori03 [73]3 years ago
3 0

Answer:

Hello,

Answer:\  2.8 < x < 5.4

Step-by-step explanation:

The simpliest is to use the triangular inequality:

in a triangle, a side must be inferior to the sum of the 2 others sides.

\left\{\begin{array}{ccc}4.1& < &x+1.3\\1.3&< &4.1+x\\x & < & 4.1+1.3\\\end{array}\right.\\\\\\\left\{\begin{array}{ccc}2.8& < &x\\1.3-4.1&< &x\ not\ used\\x & < & 5.4\\\end{array}\right.\\\\\\Finaly:\ 2.8 < x < 5.4

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If a: b= 3:4 then find the value of<br>(6a-3b :(5a + 2b)​
KengaRu [80]

Answer:

6 : 23

Step-by-step explanation:

a : b = 3 : 4 ....(given)\\  \\ let \: a = 3x \\ b = 4x \\  \\ (6a - 3b) : (5a + 2b) \\  \\  =  \frac{(6a - 3b)}{(5a + 2b)}  \\  \\  = \frac{6(3x) - 3(4x)}{5(3x) + 2(4x)} \\  \\  =  \frac{18x- 12x}{15x+ 8x} \\  \\  = \frac{6x}{23x} \\  \\  =  \frac{6}{23}  \\  \\ (6a - 3b) : (5a + 2b) = 6  : 23

7 0
3 years ago
let p be the number of primes less than 100, and let Q be the number of primes less than 90. What is the value of P-Q?
3241004551 [841]

The value of P - Q as described in the question above is; P -Q = 2.

According to the question;

  • P = number of primes less than 100
  • Q = number of primes less than 90

Since, we are required to determine what the value of P-Q is;

The value of P-Q is simply the number of primes between 90 and 100.

The prime numbers between 90 and 100 are; 91 and 97.

Therefore, P - Q = 2.

Read more;

brainly.com/question/22257959

3 0
3 years ago
Use the functions f(x) = 4x − 5 and g(x) = 3x + 9 to complete the function operations listed below.
JulijaS [17]
A:

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(f+g)(x)=4x-5+3x+9

(f+g)(x)=7x+4

B:

(f•g)(x)=f(x)•g(x)

(f•g)(x)=(4x-5)(3x+9)

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(f○g)(x)=12x+36-5

(f○g)(x)=12x+31


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3 years ago
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Answer:

The function graphed is f(x) = 3x + 1

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The answer to 12 is C.

The answer to 13 is B.  Neither is a function.  For a function of x to exist, for every x, there must be only one y.  In both tables, there's a number for x that gives two different y's.

Step-by-step explanation:

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