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Arte-miy333 [17]
4 years ago
5

Simplify the expression and find its value: (2x+0.5)^2–(2x–0.5)^2 for x=−3.5

Mathematics
1 answer:
lys-0071 [83]4 years ago
6 0
The answer is -70.25
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Help out <br><br><br><br><br> Aaaaaaaaaaaa
diamong [38]

Answer:

y=\frac{6}{5}x-8

Step-by-step explanation:

we know the slope (or m in y=mx+b) is 6/5 we just need to solve for b

we will do this by plugging in the required coordinates

-2=(6/5)*5+b

-2=6+b

-8=b

put it all together

7 0
3 years ago
Read 2 more answers
I need help with this work
Anton [14]

Answer:

Please find the answer in the image attached

Step-by-step explanation:

Here we are asked to solve a pair of linear inequalities.

In order to do so , we are first required to plot the two lines with inequalities taking into considerations.

Hence let us plot

x+2y=-4 and 5x+2y=4

let us first plot x+2y=-4

y=\frac{-4-x}{2}

let us plot a table for the same for two random values of x and putting them into above equation

x     y

0    -2

2    -3

Let us now plot these points and join the line .

Let us check whether (0,0) satisfies the in equation or not

0+2(0)≤-4

0≤-4

Which is not true , Hence we shade the portion divided by our line which does not contain (0,0)

Now let us plot the second line 5x+2y=4

y = \frac{4-5x}{2}

let us plot a table for the same for two random values of x and putting them into above equation

x     y

0     2

1     -0.5

Let us now plot these points and join the line .

Let us check whether (0,0) satisfies the in equation or not

5(0)+2(0)≤4

0≤4

Which is true , Hence we shade the portion divided by our line which does  contain (0,0)

Please refer to the image attached with this answer.

now the commonly shaded area as shown in the image will be our solution to the above pair of in equations.

3 0
3 years ago
If an exterior angle of a regular polygon is 21.2°, how many sides does the polygon have?
sesenic [268]
360 divided by x = 21.2 recurring
So rearrange that to get x = 360 divided by 21.2
Which rounds up to 17
3 0
3 years ago
3p − 5 = 10 what does p equal?
Alenkinab [10]

Answer:

p =5

Step-by-step explanation:

3p − 5 = 10

Add 5 to each side

3p-5+5 =10+5

3p = 15

Divide each side by 3

3p/3 = 15/3

p =5

5 0
4 years ago
Read 2 more answers
To solve the equation below, you would?
xxMikexx [17]

Step-by-step explanation:

step 1. x - 70 = 135

step 2. x = 205. add 70 to each side

8 0
3 years ago
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