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VladimirAG [237]
4 years ago
5

Which is point (-1, 2) on the graph? A. W B. X C. Y D. Z

Mathematics
1 answer:
Lelechka [254]4 years ago
5 0
It’s choice D. Z, hope that helps :)
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Which system of equations can be used to find the roots of the equation 4x^2=x^3+2x?
irina [24]
Next time, please share the answer choices.
Starting from scratch, it's possible to find the roots:

<span>4x^2=x^3+2x should be rearranged in descending order by powers of x:

x^3 - 4x^2 + 2x = 0.  Factoring out x:  </span>x(x^2 - 4x + 2) = 0

Clearly, one root is 0.  We must now find the roots of (x^2 - 4x + 2):

Here we could learn a lot by graphing.  The graph of y = x^2 - 4x + 2 never touches the x-axis, which tells us that (x^2 - 4x + 2) = 0 has no real roots other than x=0.  You could also apply the quadratic formula here; if you do, you'll find that the discriminant is negative, meaning that you have two complex, unequal roots.
5 0
3 years ago
Read 2 more answers
Sisters Lisa and Melissa want to share equally the cost of a $609 lap top computer. How much should each girl pay?
Natali5045456 [20]

Answer:

$304.5...........................

3 0
3 years ago
Which statement is the correct interpretation of the inequality ?4 &gt; ?5? On a number line, ?4 is located to the left of 0 and
iragen [17]

Answer:

On a number line, -4 is located to the right of -5

Step-by-step explanation:

5 0
3 years ago
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2. What is the value of x if the angles<br> within a triangle are 2x +1, 7x-2 and 3x<br> +5?
noname [10]

Answer:

 x=14.67\\°

Step-by-step explanation:

The sum of all the three angles of any triangle is 180°

Putting sum of all the angles given equals to 180°

                      (2x+1)+(7x-2)+(3x+5)=180°

                              2x+7x+3x+1-2+5=180°

                                                         12x+4=180°

                                                                   x=\frac{180-4}{12}

                                                                   x=14.67\\°

The value of the x is found on solving the given angles of the triangles.

8 0
3 years ago
HELP PLEASE ASAP !!!
Zepler [3.9K]

Answer:

X = 6.25 ft.

Step-by-step explanation:

From the figure:

∵ Two angles in the small flag = the corresponding angles in the large flag

∴ Two flags are similar

∴ Their sides are proportional

∴ \frac{4}{5}=\frac{5}{x} \\ x=\frac{(5)(5)}{4}=6.25

∴ x = 6.25 ft

8 0
3 years ago
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