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almond37 [142]
3 years ago
14

X^2+2x=4 Can someone help me complete the square I forgot how to do it. pls show steps​

Mathematics
1 answer:
VladimirAG [237]3 years ago
4 0

Answer:

First of all , you need to make the standard form of equation out of datas . In order to do that transfer (4) to the left side of equation and put 0 instead of it .

The next levels are shown in the above pics , sorry i coulden't write them here .

Step-by-step explanation:

Hope it was helpful dear .

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Simplify the expression 9xy + 6xy − 2xy. What is the coefficient of the simplified expression?
Art [367]
Hi there!

To find our answer we need to collect the terms of the expression.

9xy + 6xy - 2xy = \\ 15xy - 2xy = \\ 13xy

The coefficient (which is the number just before the variable) of the simplified expression is 13.
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I need the answer plzzzz
Vladimir79 [104]
I think the equation that is not true is D. (200m = 2cm)
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Pls help for brainlist
snow_tiger [21]

Answer: 7/20

Step-by-step explanation:

3/4 - 2/5

= 3x5/4x5 - 2x4/5x4

=15/20 - 8/20

= 7/20

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abruzzese [7]

Answer:

6.28

Step-by-step explanation:

You need to find the circumference,

so 2*3.14*R

the radius is 4 so

2*3.14*4

25.12

now you have found the length of the full circle, you need to find a quater like because there is 4 90 degres in a circle

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5 0
4 years ago
Which inequality is represented by the graph?
Taya2010 [7]

Answer:

Option B

Step-by-step explanation:

Notice that the region of the inequality is bounded by a line.

The first thing to do is find the equation of this line.

Note that the line intersects the x-axis at x = 3.5 and intercepts the y-axis at y = -2.5

We know that the equation of a line has the following form:

y = mx + b

Where m is the slope of the line and b is the intercept with the y axis.

So we already know that:

b = -2.5 = -\frac{5}{2}

Then we know that when x = 3.5 then y = 0

Thus:

0 = 3.5m -2.5

Ahroa we clear m.

m = \frac{2.5}{3.5}\\\\m = \frac{5}{7}

Then, the equation of the line is:

y = \frac{5}{7}x -\frac{5}{2}

We can also multiply by -2 both sides of the equation and we have:

-2y = -\frac{10}{7}x +5

Then:

\frac{10}{7}x -2y =5

The option that contains this equation is option B.

To verify it, enter a point within the shaded region, such as the point (0,0), in the selected inequality. If the inequality is satisfied then option B is correct

\frac{10}{7}x -2y\leq5\\\\\frac{10}{7}(0) -2(0)\leq5\\\\0\leq5

The inequality is satisfied because 0 is less than 5. Then the correct option is B

7 0
3 years ago
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