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3 years ago

9

How many real number solutions does this equation have

a1" title="-7x^2+6x+3=0" alt="-7x^2+6x+3=0" align="absmiddle" class="latex-formula">

1 answer:

garik1379 [7]3 years ago

8 0

Answer:

None

Step-by-step explanation:

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Examine the diagram.

wolverine [178]

Answer:

$m\angle 1 =60.75^\circ \\m\angle 2 =119.25^\circ$

Step-by-step explanation:

From the diagram:

$m\angle 1 =60.75^\circ $(Corresponding Angles)\\$

Now Angle 1 and Angle 2 are on a straight line, therefore:

$m\angle 1 +m\angle 2 =180^\circ $(Linear Postulate)\\Since m\angle 1=60.75^\circ\\60.75^\circ +m\angle 2 =180^\circ\\m\angle 2=180^\circ-60.75^\circ\\m\angle 2 =119.25^\circ$

3 0

3 years ago

A parachutist's speed during a free fall reaches 207 kilometers per hour. What is this speed in meters per second? At this speed

Mamont248 [21]

<span>The speed is 57.5 m/s and the parachutist will fall 1150 m in 20 seconds.

Explanation<span>:
We start out with the ratio 207 km/1 hr.

We know that 1 km = 1000 m; this means 207 km = 207*1000 = 207000 m. This gives us 207000 m/1 hr.

We know that 1 hr = 60 minutes, so we have 207000 m/60 min.

We also know that 1 min = 60 seconds, so 60 min = 60*60 = 3600 sec; this gives us 207000 m/3600 sec.

Dividing this, we get 57.5 m/s.

In 20 seconds, the parachutist will fall 57.5(20) = 1150 m.</span></span>

4 0

4 years ago

Read 2 more answers

Round 146.56 to the nearest tenth.

Georgia [21]

146.6. Nearest tenth is one place after the decimal.

3 0

3 years ago

Read 2 more answers

How to find the vertices of the hyperbole

torisob [31]

The answer is the second one

If you want a fast explanation

You have to remember that the minus sign indicates which direction the hyperbole will follow, if the minus is on x, that indicates the hyperbole will be vertical, and if the minus is in y, then it'll be horizontal

If you check the vertices points those indicates the length of 2a thus thatll be 6

To get the center just use middle point equation and you'll get (1,3)

Just to know, a indicates the distance from the center to the vertices, b indicates how wide the hyperbole box is, and c indicates the distance from center to focis

A=3

B=?

C=6

We use Pythagoras so

$b = \sqrt{(6) ^{2} - (3) ^{2} }$

Thus you get

$b = \sqrt{27}$

With that data now you can get the equation

You know that below (y-3)^2 there should be a^2 so that means there will be the 9

And in the (x-1)^2 there should be b^2 so that means there will be the 27

PD. The 3 besides y, and 1 besides x represent the center

5 0

3 years ago

Read 2 more answers

Which expression is equivalent to (3−2^2) 5 ? 5−3^2 5−2^2 2^2−5 3^2−5

tamaranim1 [39]

Well (3-2^2)5 = -5
and 5-3^2=-4
5-2^2=1
2^2-5=-1
3^2-5=4
but if you have to multiply them by 5 as well then (2^2-5)5=-5

8 0

3 years ago