3 years ago

I need help with 1 and 2

Mathematics

1 answer:

ratelena [41]3 years ago

4 0

Answer:3

Step-by-step explanation:

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What is X squared +3x-70

Aleksandr-060686 [28]

Answer:

x = 7, x = -10

Step-by-step explanation:

$x^2+3x-70 = 0$

Use the quadratic formula.

$x = \frac{-3 + \sqrt{3^2-4(1)(-70)} }{2(1)} \\x = \frac{-3 - \sqrt{3^2-4(1)(-70)} }{2(1)} \\$

Solve.

x = 7, x = -10

You can also factor if you want - that is a faster method.

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3 years ago

graph the parabola y equals negative x squared + 3 to graph a parabola plot the vertex and four additional points two on each si

Nataliya [291]

You don't have the graph icon here, so we'll have to graph this parabola without it.

Your parabola is y = -x^2 + 3., which resembles y = a(x-h)^2 + k. We can tell immediately that this parabola opens down and that the vertex is (0,3).

Plot (0,3). Besides being the vertex, this point is also the max. of the function.

Now calculate four more points. Choose four arbitrary x-values, such as {-2, 1, 4, 5} and find the y value for each one. Plot the resulting four points. Draw a smooth curve thru them, remembering (again) that the vertex is at (0,3) and that the parabola opens down.

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2 years ago

Emily bought 51 yards of fabric to make curtains,

OLga [1]

51 x3 is 153 is 153 x 12 is 22032

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2 years ago

Read 2 more answers

What is the value of x? Enter your answer in the box. x =

irinina [24]

4x-10+5x-22+3x+2=180

So x=35/2 or 17.5