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inna [77]
3 years ago
15

(05.02 LC)

Mathematics
1 answer:
zzz [600]3 years ago
7 0

Answer:

3

Step-by-step explanation:

the line crosses the y-axis at 0 and its slope is 2

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Solve by the substitution method.<br> 4x+4y=20<br> -2x+y=11
max2010maxim [7]

Answer:

x = -2,   y = 7

Step-by-step explanation:

Since it's a system of equations, we know that the they use the same variables. To use substitution to solve a system of equation, we must take one equation and solve it for a variable, then you plug the solution into that variable for the other equation:

-2x + y = 11

y = 2x + 11

-------

4x + 4y = 20

4x + 4(2x + 11) = 20

4x + 8x + 44 = 20

12x + 44 = 20

12x = -24

x = -2

Then we can plug "x" into the first equation:

-2x + y = 11

-2(-2) + y = 11

4 + y = 11

y = 7

6 0
4 years ago
Factorise completely ​
Oduvanchick [21]

Answer:

Where is the question????

4 0
3 years ago
Read 2 more answers
Construct a triangle ABC, right angled at B and the sides BC = 4cm and AC = 5cm. Measure side AB.
MaRussiya [10]

Answer:

3

Step-by-step explanation:

6 0
3 years ago
In which quadrant is the point (4,-2 located<br>​
zheka24 [161]

Answer:

quadrant 4

Step-by-step explanation:

Hope this helped :)

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4 0
3 years ago
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When the function f(x) = 3(5)x is changed to f(x) = 3(5)x + 22, what is the effect? (4 points) There will be no change to the gr
Dima020 [189]

Answer:

the y-intercept is 22 spaces higher.

Step-by-step explanation:

I don't know, what special operations you want to express with 3(5)x.

as it is written this simply means

3×5×x

no exponents or other special things are visible.

but it should not matter.

whatever is the first function is unchanged the first part of the second function.

so, the only difference is the "+ 22" part.

and that simply means that all y values (the functional result values) are increased by 22.

you know that "f(x) =" has the same meaning as "y =".

and with that also the y-intercept (the y value when x = 0, and therefore the point, where the curve intersects the y-axis) is increased by 22 spaces.

4 0
2 years ago
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