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3 years ago

Mixed numbers between 6 and 8 with an interval of 1/4 between each pair of mixed numbers

1 answer:

7 0

Those numbers would be,
$6 \frac{1}{4} 6 \frac{2}{4} 6 \frac{3}{4}$ $7$ $7 \frac{1}{4} 7\frac{2}{4} 7\frac{3}{4}$
Hope this helps!=)

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Does anyone have the answer to this? <br> 3(x+2)-7 = 5x + 7.

Aleks04 [339]

Answer:

-4

Step-by-step explanation:

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2 years ago

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A tourist in France wants to visit 8 different cities. If the route is randomly selected, what is the probability that she will

Harlamova29_29 [7]

Answer:

Probability p( selecting 8 cities alphabetically) = 2.48×10^-5

Step-by-step explanation:

Number of possible ways of choosing 8 cities=Permutation P(n,k) = n!/(n-k)!

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Probability (selecting 8 cities alphabetically) = 1/40320 = 2.48×10^-5

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3 years ago

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How would you go about finding the solution to this system of three equations in three variables? Be specific. For example, you

kupik [55]

I:2x – y + z = 7
II:x + 2y – 5z = -1
III:x – y = 6

you can first use III and substitute x or y to eliminate it in I and II (in this case x):
III: x=6+y
-> substitute x in I and II:
I': 2*(6+y)-y+z=7
12+2y-y+z=7
y+z=-5

II':(6+y)+2y-5z=-1
3y+6-5z=-1
3y-5z=-7

then you can subtract II' from 3*I' to eliminate y:
3*I'=3y+3z=-15

3*I'-II':
3y+3z-(3y-5z)=-15-(-7)
8z=-8
z=-1

insert z in II' to calculate y:
3y-5z=-7
3y+5=-7
3y=-12
y=-4

insert y into III to calculate x:
x-(-4)=6
x+4=6
x=2

so the solution is
x=2
y=-4
z=-1

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3 years ago

timothy creates digital art prints for his art show.in 1 day he created 8 diffrent art prints.which equation best represents y,t

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Answer:

Step-by-step explanation:

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2 years ago

The area of a triangle is 20 cm², and the

grandymaker [24]

Answer:

Heavenly, we need the forumula for the area of a triangle, do you know it?

Step-by-step explanation:

Area of a triangle is (1/2 ) * B*H

where B = base

H = height

then

A = 1/2* B * H

A is given to be 20

B = b

H = b+4

plug all those into the formula,

20 = (1/2)*b*(b+4)

use your algebra skillz :P

20 = 1/2 *( $b^{2}$ + 4b)

20*2 = $b^{2}$ + 4b

40 = $b^{2}$ + 4b

0 = $b^{2}$ + 4b-40

rewrite the above so it's in x format

$x^{2}$ + 4x -40 = 0

use the quadratic formula to find x , and for our problem, remember that x represents the base, or b, but don't mix it up with the b in the quadatic fomula, with the b of the triangle, which is the base, they are differnt "b"s :P

X = (b± $\sqrt{b^{2}-4*a*c }$ ) / 2*a