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Sonbull [250]
2 years ago
10

Simplify the polynomial then evaluate for x=-1 3x^2-4+2x-1+x^2

Mathematics
1 answer:
yuradex [85]2 years ago
7 0

Answer:

-3

Step-by-step explanation:

Simplified polynomial: 4x^2 + 2x - 5

Plug in -1: 4(-1)^2 + 2(-1) - 5

= -3

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a mountaineer climbed 1,000 feet at a rate of x feet per hour, he climbed and additional 5,000 feet at a different rate. this ra
marshall27 [118]

A mountaineer climbed 1000 feet at a rate of x feet/hour

 1000 = x ( t 1 )         eq1

  5000 = X ( t 2)        eq2     ( he climbed additional at different rate )

the rate was 10 feet / hour less than twice the first rate

 X   = 2x - 10             eq3

take eq1 and eq 2

( total time = t 1 +  t 2 =   T)

T = 1000/x  + 5000/X

but X = 2x-10

T = 1000/x   +  5000/( 2x -10)

T = 1000/x   +  5000/( 2(x-5))

T  = 1000/x   +    2500 /  (x-5)



3 0
2 years ago
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40 multiply 10=4 multiple
leva [86]
40  the answer i think
6 0
2 years ago
Vada places a box of toys and a box of books together. The box of toys has a length of 5 feet, a width of 3 feet, and a height o
Elena L [17]

Answer:

78 ft³

Step-by-step explanation:

<u />

Volume of a rectangular prism = length × width × height

<u />

<u>Toy Box</u>

  • length = 5 ft
  • width = 3 ft
  • height = 2ft

⇒ volume = 5 × 3 × 2 = 30 ft³

<u>Book Box</u>

  • length = 6 ft
  • width = 4 ft
  • height = 2 ft

⇒ volume = 6 × 4 × 2 = 48 ft³

Total combined volume = 30 + 48 = 78 ft³

7 0
2 years ago
Read 2 more answers
√4/4
Lady_Fox [76]

Answer:

D. \frac{4}{16}^{1/2}

Step-by-step explanation:

\frac{\sqrt{4} }{4} = 0.5

and

\frac{4}{16}^{1/2}=0.5

3 0
3 years ago
What is an integet generated by chance. Such as by rolling a number cube or using a graphing calculator?
Romashka-Z-Leto [24]
An integer generated by chance is an integer (a whole number) that has been generated using a method that is completely random and unaffected by bias. 
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3 years ago
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