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pogonyaev
3 years ago
11

Im stuck help i only have 1 hour for this test

Mathematics
1 answer:
weqwewe [10]3 years ago
7 0

Answer: -161

Step-by-step explanation:

-161 because 23 TIMES -7 is -161

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The following are the ages (years) of 5 people in a room:
juin [17]

Answer:

10

Step-by-step explanation:

14+14+18+18+22=86

6*16=96

96-86=10

7 0
3 years ago
Read 2 more answers
A weightlifter holds a 1,700 N barbell 1 meter above the ground. One end of a 2-meter-long chain hangs from the center of the ba
masha68 [24]
In physics, work is equal to the product of force and distance, given that the direction of force is the same with the direction of the distance.

W = Fd

The total force is 
F = 1,700 N + 500 N = 2,200 N
Now, if the question is the work needed to lift the barbell from the ground, the distance would be 2 m. Hence, the work would be

W = (2,220 N)(2 m) = 4,400 N·m or 4,400 J
5 0
3 years ago
Simplify the expression
vekshin1

Answer:

the answer is c

Step-by-step explanation:

6 0
4 years ago
Find the roots of the quadratic equation w+w²/3=0​
Daniel [21]

I assume that the equation you mean is below:

\large \boxed{w +  \frac{ {w}^{2} }{3}  = 0}

To find roots for this equation, we have to get rid of the denominator. We can do by multiplying both sides by 3.

\large{w(3) +  \frac{ {w}^{2} }{3} (3) = 0(3)} \\  \large{3w +  {w}^{2}  = 0}

Factor w-term out (common factor)

\large{w(3 + w) = 0} \\  \large{w = 0 \:  \:  \:  or \:  \:  \: 3 + w = 0} \\  \large{w = 0, - 3}

Answer

  • The roots of quadratic equation are 0,-3
8 0
3 years ago
Rewrite the function by completing the square 4x^2-16x +7
tia_tia [17]

Answer:

(2x-4)^2-9 => 4(x-2)^2-9

Step-by-step explanation:

=> 4x^2-16x+7\\ =>(2x)^2-2*(2x)*(4)+7\\ =>(2x)^2-2*(2x)*(4)+(4)^2-(4)^2+7\\ =>(2x-4)^2-9\\ =>4(x-2)^2-9

6 0
3 years ago
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