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3 years ago

4х² – 2(x² — 3х+2)combine like terms to write a polynomial in standard form.

Mathematics

1 answer:

Ludmilka [50]3 years ago

6 0

Step-by-step explanation:

$4 {x}^{2} - 2( {x}^{2} - 3x + 2) \\ = 4 {x}^{2} - 2 {x}^{2} + 6x - 4 \\ = 2 {x}^{2} + 6x - 4 = \\ {x}^{2} + 3x - 2$

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yaroslaw [1]

diameter is 15 meters then radius is 15/2 = 7.5 meters

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4 years ago

To solve the equation 2x−3=3x−7 , Esin graphs the functions f(x)=2x−3 and g(x)=3x−7 on the same set of coordinate axes.

Alecsey [184]

We have that

f(x)=2x−3
g(x)=3x−7

2x-3=3x-7-------------> 3x-2x=-3+7-------> x=4
find the value of f(x) or g(x) for x=4
f(x)=2x−3 -------> f(4)=2*4-3------> f(4)=5
the solution is the point (4,5)

using a graph tool
see the attached figure

statement

case a) The solution of the equation cannot be found graphically. Esin should solve the equation algebraically.
this is not correct

case b) The solution of the equation is the y-intercept of the linear equations.
this is not correct

case c)The solution of the equation is the x-coordinate of the ordered pair where the graphs of the two functions intersect.
this is correct

case d) The solution of the equation is the y-coordinate of the ordered pair where the graphs of the two functions intersect
this is not correct

the answer is
case c) The solution of the equation is the x-coordinate of the ordered pair where the graphs of the two functions intersect.

8 0

4 years ago

In the figure below, solve for the value of a. a = ______ in. (round to the nearest tenth and do NOT include units in your answe

GrogVix [38]

Answer:

6.9

Step-by-step explanation:

sinX=opposite/hypotenuse

sin35=a/12

a=12*0.57357643635

a=6.88291723621≈6.9

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3 years ago

The ratio between the number of red and green marbles in a box is 3:7. How many marbles are in the box if there are 20 fewer red

jeyben [28]

Answer:

50 marbles

Step-by-step explanation: The difference between the ratio of the red and green marbles is 4 units and the number value is 20 so its safe to say that 4 units is equal to 20 and thus one unit is 5 and because of the fact that there is a total of 10 units of marbles in the box according to the ratio, just multiply 5 and 10 which you get 50.

4 units = 20

1 unit = 20÷4 = 5

Total = 10 units

10 unit = 5 ×10 = 50

Ans : 50 marbles

3 0

3 years ago

4. Cecelia is an avid art collector who owns many original works of art. Recently, she decided to sell an oil painting by Norman

Elis [28]

Hi there

Capital gain
500,000−350,000
=150,000
Capital gain tax
150,000×0.15
=22,500

Hope it helps

5 0

3 years ago

4х² – 2(x² — 3х+2)combine like terms to write a polynomial in standard form.​

4х² – 2(x² — 3х+2)combine like terms to write a polynomial in standard form.