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katrin [286]
3 years ago
10

PLS HELP ME I ONLY HAV 2 MINS PLSSSSS

Mathematics
2 answers:
muminat3 years ago
6 0

Answer:

- 8

Step-by-step explanation:

Y_Kistochka [10]3 years ago
3 0

Answer:

-8

Step-by-step explanation:

3x(x+x)−6x^2+2^2−12

=6x^2+−6x^2+4+−12

Combine Like Terms:

=6x^2+−6x^2+4+−12

=(6x^2+−6^2)+(4+−12)

=−8

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Please answer this correctly
Gnoma [55]

Answer:

3:30 pm

Step-by-step explanation:

Games : 1 hour

Cleaning : 1 hour

Homework: 30 minutes

Total time

1+1+ 30 minutes

She started at 1 pm

1 + 2 hour 30 minutes

1 +2 hours = 3 pm

3+30 minutes = 3:30

3 0
3 years ago
Read 2 more answers
the probability of winning a game is 20%. if you play 20 times how many times should you expect to win
julia-pushkina [17]
The probability of winning a game out of 20 is 4 times. 
6 0
3 years ago
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Which is an equation in point-slope form for the given point and slope?
Kisachek [45]

The point-slope form: y-y_1=m(x-x_1)

Q2.

(1,\ -7)\to x_1=1,\ y_1=-7\\m=1\\\\y-(-7)=1(x-1)\\\\y+7=(x-1)

Q3.

(5,\ 9)\to x_1=5,\ y_1=9\\m=2\\\\y-9=2(x-5)

Q4.

y=mx+b\\\\(0,\ 1)\to b=1\\\\y=mx+1

The formula of a slope: m=\dfrac{x_2-x_1}{y_2-y_1}

((-2,\ 4)\to x_1=-2,\ y=4\\(2,\ -2)\to x_2=2,\ y_2=-2\\\\m=\dfrac{-2-4}{2-(-2)}=\dfrac{-6}{4}=-1.5

y=-1.5x+1

8 0
3 years ago
X-5y-z=-20<br><br>-2x-y-6z=25<br><br>-x-4y-z=-15<br>Solve by elimination
Tju [1.3M]

Answer:

x = 0

y = 5

z = -5.

Step-by-step explanation:

X-5y-z=-20

-2x-y-6z=25

-x-4y-z=-15

Add equation 1 and 3:

-9y - 2z = -35 .......... A

Multiply the first equation by 2:

2x - 10y - 2z = -40

Now add this to equation 2:

-11y -8z = -15.............B

Now multiply equation A by -4:

36y + 8x = 140.........C

Add equations B and C:

25y = 125

y = 5.

Substitute for y in equation A:

-9*5 - 2z = -35

2z = -45 + 35 = - 10

z = -5.

Now find x by substituting for y and z in the first equation:

x - 5(5) - (-5) = -20

x - 20 = -20

x = 0.

6 0
3 years ago
Tyler has a bag of shapes with 8 octagons, 24 trapezoids, 5 pentagons, 14 hexagons what is the probability he will pick a shape
lana [24]
More than 5 sides have octagons and hexagons
so 
8+14=22
altogether  8+14+24+5 =22+29=51
P=22/51
5 0
3 years ago
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