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Lubov Fominskaja [6]
3 years ago
15

Pleasseee hellp for brainleist answer and extra points if you correct the 2 first top rows

Mathematics
2 answers:
andrew-mc [135]3 years ago
7 0
So close! But instead of adding the multiplication sign after the number you need to add them before. Good job though! :)
guapka [62]3 years ago
6 0
5. X+10
6. 3x+5
7. 21+4x
8. 11-7x
9. 10+3x
10. 40-12x
Hope that helps
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X+y-z=5 -x-4y-8z=6 3x+5y-4z=-20
Juli2301 [7.4K]

Answer:

x = 24.48, y = -15.52, z = 3.95 to the nearest hundredth.

Step-by-step explanation:

 x+y-z=5             (a)

-x-4y-8z=6          (b)

3x+5y-4z=-20      (c)

Adding equations a and b:

-3y - 9z = 11       (d)

Now multiply equation b by 3:

-3x - 12y - 24z = 18        (e)

Adding  c and e:

-7y - 28z = -2      (f)  Multiply by 3 to give (g)

-3y - 9z = 11         (b)   Multiply by  -7 to give (h)

-21y - 84z = -6     (g)

21y + 63z = -77    (h)    Adding g and h:

-21z = - 83

z =  3.952

and y is found bt substituting in equation d:

-3y - 9(3.952) = 11

y = ( 11 + 9(3.952) / -3

= -15.52.

Now find x by substituting for y an z in equation a:

x - 15.52 - 3.952 = 5

x = 5 + 15.52 + 3.952

= 24.476.

3 0
3 years ago
Which graph represents a function
ICE Princess25 [194]

Answer:

the bottom left one (the graph that looks like a circle) is not a function, but the other ones are.

Step-by-step explanation:

A function is defined so that for every x value within a function has a y value.  This means that an x value CANNOT have more than one y value.  The bottom right one has two y values for almost every x value within the domain.  The top ones are functions, because all x values have only 1 y value (a discontinuous function is still a function!)  And the bottom right is too.

3 0
3 years ago
I need help with this ASAP please!!
Ilia_Sergeevich [38]

Answer:

Translation 1 unit left

Step-by-step explanation:

we have

f(x)=x

g(x)=(x+1)

we know that

The rule of the transformation of f(x) to g(x) is equal to

f(x) ------> g(x)

(x,y) -----> (x-1,y)

That means----> The translation is 1 unit to the left

6 0
3 years ago
Han buys an item with a normal price of 15$ and uses a 10% off coupon. How much does he save by using the coupon
valina [46]

Answer: $1.50

Step-by-step explanation:

The item's normal price is $15.

Han uses a 10% off coupon so he saves 10% which is:

= 15 * 10%

= $1.50

He therefore bought the item for $8.50.

6 0
3 years ago
Where do the graphs of the linear equation y=2x+5 and y=-2x-3 intersect?
Aleksandr [31]
It graphs in the y=2x-3 so I say it’s d bc it is in the answer up above
6 0
3 years ago
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