All categories

4 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!

Mathematics

1 answer:

andrew-mc [135]4 years ago

5 0

$x^2+8x+20=0\\\\x^2+8x+16+4=0\\\\(x+4)^2=-4\\\\x+4=\sqrt{-4} \vee x+4=-\sqrt{-4}\\\\x=-4+2i \vee =-4-2i$

You might be interested in

Which expression is equivalent to 3x+10−x+12 ?

Stells [14]

Answer:

D)---—————------->

2x+22

6 0

3 years ago

Read 2 more answers

Find the components of the vertical force Bold Upper FFequals=left angle 0 comma negative 10 right angle0,−10 in the directions

quester [9]

Solution :

Let $v_0$ be the unit vector in the direction parallel to the plane and let $F_1$ be the component of F in the direction of $v_0$ and $F_2$ be the component normal to $v_0$ .

Since, $|v_0| = 1,$

$(v_0)_x=\cos 60^\circ= \frac{1}{2}$

$(v_0)_y=\sin 60^\circ= \frac{\sqrt 3}{2}$

Therefore, $v_0 = \left$

From figure,

$|F_1|= |F| \cos 30^\circ = 10 \times \frac{\sqrt 3}{2} = 5 \sqrt3$

We know that the direction of $F_1$ is opposite of the direction of $v_0$ , so we have

$F_1 = -5\sqrt3 v_0$

$=-5\sqrt3 \left$

$= \left$

The unit vector in the direction normal to the plane, $v_1$ has components :

$(v_1)_x= \cos 30^\circ = \frac{\sqrt3}{2}$

$(v_1)_y= -\sin 30^\circ =- \frac{1}{2}$

Therefore, $v_1=\left< \frac{\sqrt3}{2}, -\frac{1}{2} \right>$

From figure,

$|F_2 | = |F| \sin 30^\circ = 10 \times \frac{1}{2} = 5$

∴ $F_2 = 5v_1 = 5 \left< \frac{\sqrt3}{2}, - \frac{1}{2} \right>$

$=\left$

Therefore,

$F_1+F_2 = \left< -\frac{5\sqrt3}{2}, -\frac{15}{2} \right> + \left< \frac{5 \sqrt3}{2}, -\frac{5}{2} \right>$

$= = F$

3 0

3 years ago

What’s standard form of y=6x-4

Natalija [7]

Answer: probably y= -24

Step-by-step explanation:

5 0

3 years ago

Use the Distributive Property to<br> simplify the following:<br> 7(y + 3) =

Ksju [112]

Answer:

7y+21

Step-by-step explanation: i solve it hope this help.

8 0

3 years ago

The weights of bags of baby carrots are normally distributed, with a mean of 2929 ounces and a standard deviation of 0.330.33 o

Alex73 [517]

<span>Mean is in ounces = 32 Standard Deviation in Ounces = 0.36 Cumulative percentage = 100 â€“ 4.5% = 95.5% Now, Z Value = 1.695398 X Value = 32.61034 So P(x>=?) = 0.45 is similar to P(x <=?) = 0.955 So looking at the area as 0.955 and use x = mu + z*sigma X = 36 + 1.695*0.36 Weight of the bag that baby carrots cannot weigh over 32.61034 oz.</span>

5 0

4 years ago