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Hunter-Best [27]
2 years ago
6

Add −3x2y2z2+12xyz2+7xyz and 10xyz−10xyz2

Mathematics
1 answer:
Andre45 [30]2 years ago
6 0

Answer:

3xyz

Step-by-step explanation:

The required sum = 7xyz+(−5xyz)+9xyz+(−8xyz)

=7xyz–5xyz+9xyz–8xyz

=(7–5+9–8)xyz

=(16–13)xyz

=3xyz

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ollegr [7]
The slope of this line is -1/6.  

2 Point:     (6,2)         (-6,6)
                   x₁ y₁         x₂ y₂
       

Remember: 
  
    rise          change in y          y₂ - y₁          6 - 2            4
 ---------- =  ------------------- = ------------- = ----------- = ----------
    run            change in x         x₂ - x₁         -6 - 6          -12


Simplify 4/-12

     4 ÷ 4             1
  -------      = ------------- = -1/3
   -12 ÷ 4          -3

The slope of the line is -1/3.






3 0
3 years ago
If the simple interest on ​$4,000 for 7 years is ​$1,960​, then what is the interest​ rate?
maks197457 [2]

Answer:

The interest if for evey one year it 280 dollars

4 0
3 years ago
Which equation correctly uses point (–2, –6) to write the equation of this line in point-slope form? Y – 6 = y minus 6 equals St
Tanya [424]

Answer:

Step-by-step explanation:

The standard way of writing equation of a line in a point-slope form is as given;

y - y0 = m(x-x0)

m is the slope of the line

(x0,y0) is a point on the line.

Given the point (-2,-6), in order to determine with of the equation that correctly uses the point, we will substitute the point into the formula and get the necessary equation.

y - y0 = m(x-x0)

y - (-6) = m(x-(-2))

y+6 = m(x+2)

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8 0
3 years ago
A tug boat traveled -15 miles in 0.3 hours what was its velocity
GenaCL600 [577]

Answer:

22.35 m/s

Step-by-step explanation:

The distance is always a positive unit, so distance traveled (d) = 15 miles

Time (t) = 0.3 hours

Time (t) = 0.3 * 60 = 18 minutes

(1 hour = 60 minutes)

Velocity (v) = ?

The formula of distance is: d = v*t

=> v = d/t = 15/18 = 0.83 miles/minute

we can also calculate velocity is meter/sec, for that

1 minute = 60 sec

=> 18 mins = 18*60 = 1080 sec

1 mile = 1609.34 meters

=> 15 miles = 15 * 1609.34 = 24,140 m

hence,

v = 24,140/1080 = 22.35 m/s

4 0
3 years ago
Please help me with this and find x!! Thank you, only if you know!
scoray [572]

Answer:

x = 9.8

Step-by-step explanation:

to find x, use pythagorean theorem

a^{2} = c^{2} - b^{2}

a^{2} = 14^{2}  - 10^{2}

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\sqrt{a^2} = \sqrt{96}

a = 9.7979 ⇒ 9.8

7 0
3 years ago
Read 2 more answers
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