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leva [86]
3 years ago
13

Help pls! ill mark best answer brainliest

Mathematics
1 answer:
loris [4]3 years ago
5 0
D is equal to 19 :)))
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A freight train completes its journey of 150 miles 1 hour earlier if its original speed is increased by 5 miles/hour what is the
vlabodo [156]
<span>A freight train completes its journey of 150 miles 1 hour earlier if its original speed is increased by 5 miles/hour. What is the train’s original speed?
***
let x=original speed
x+5=increased speed
travel time=distance/speed
..
lcd:x(x+5)
150(x+5)-150x=x(x+5)
150x+750-150x=x^2+5x
x^2+5x-750=0
(x-25)(x+30)=0
x=25
What is the train’s original speed? 25 mph</span>
7 0
3 years ago
Let f (x) be a polynomial function with a zero of multiplicity of 1 at 2 and a zero of multiplicity of 2 at 1. Let g(x) be the r
Stella [2.4K]

The polynomial functions in their expanded form is given as follows. It is right to state that there are no breaks in the domain of h(x).

<h3>

What is a polynomial function?</h3>

In an equation such as the quadratic equation, cubic equation, etc., a polynomial function is a function that only uses non-negative integer powers or only positive integer exponents of a variable.

For instance, the polynomial 3x+4 has an exponent of 1.

Part A: F(x) has zero at 2 and multiplicity of 1; and

1 at the multiplicity of 2

f(x) = x-2) (x-1)²

= (x-2) (x² - 2x + 1)

= x³ - 4x² + 5x -2

Part B: h (x) = \left \{ {{x^3 -4x^2 + 5x -2; X < 0} \atop {\sqrt[3]{x-2} ; X\geq 0 }} \right.

The domain of X is X ∈ R

Hence it is correct to state that there are no breaks in the domain of h(x).

Learn more about polynomial functions:
brainly.com/question/2833285
#SPJ1

6 0
2 years ago
For every 4 inches of wire, the Carpenture must use 10 feet of wood. He uses 10 inches of wire. how many feet of wood does he us
Lesechka [4]
4/10 = 10/x
x = 25

<span>C) 25 feet
</span>
3 0
4 years ago
Please help me!!
Fittoniya [83]

Answer:

511.425

Step-by-step explanation:

Easy add them all together = 2045.7 then divide by how many numbers are there so 4 thats  511.425  and theres ur answer please mark me as brainlest!

7 0
3 years ago
Please Help! I will give you a lot of points if you do!
Tanzania [10]

Answer:

47

Step-by-step explanation:

According to the number system 7 lines and 12 dots, a line is 5 and a dot is 1

you do 5*7+12 which is equal to 47

So the answer is 47,

Hope this helps!

7 0
3 years ago
Read 2 more answers
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