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Naily [24]
3 years ago
9

Im begging someone help me please

Mathematics
1 answer:
Tems11 [23]3 years ago
7 0

Answer:

c. a: 4

b: 12

c: 9

4x² +12x+9=0

(2x+3)(2x+3)= 0

(2x+3)²=0 {square root both sides}

2x+3=0

2x=-3

x= -3/2

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−7/2÷7/5 i do not get it PLZ HELP!!! ASAP
yulyashka [42]
Okay, to start, when dividing fractions, one thing I use is to flip the numerator and denominator of the divisor and change the division sign to a multiplication sign so it would look like this: 
-7/2*5/7
Then, you would multiply straight across and you would get -35/14 which simplifies to -5/2.

4 0
3 years ago
Write 3.2x10 square (-5) in standered form
kotykmax [81]
I believe it would be 320000 sorry if I didn't really help
5 0
3 years ago
Derive the equation of the parabola with the focus <br> is (-7,5) and the directrix of y=-11
Volgvan
So, notice, the focus point is at -7, 5, and the directrix is at y = -11.

keep in mind that the vertex is half-way between those two fellows, and the distance from the vertex to either one of them is "p" units, check the picture below.

with that focus point and that directrix, the half-way over the axis of symmetry will be -7, -3, that's where the vertex is at, and notice the distance "p", is 8 units.

since the parabola is opening upwards, "p" is positive 8.

\bf \textit{parabola vertex form with focus point distance}\\\\&#10;\begin{array}{llll}&#10;4p(x- h)=(y- k)^2&#10;\\\\&#10;\boxed{4p(y- k)=(x- h)^2}&#10;\end{array}&#10;\qquad &#10;\begin{array}{llll}&#10;vertex\ ( h, k)\\\\&#10; p=\textit{distance from vertex to }\\&#10;\qquad \textit{ focus or directrix}&#10;\end{array}\\\\&#10;-------------------------------\\\\&#10;\begin{cases}&#10;h=-7\\&#10;k=-3\\&#10;p=8&#10;\end{cases}\implies 4(8)[y-(-3)]=[x-(-7)]^2&#10;\\\\\\&#10;32(y+3)=(x+7)^2\implies y+3=\cfrac{1}{32}(x+7)^2&#10;\\\\\\&#10;y=\cfrac{1}{32}(x+7)^2-3

8 0
3 years ago
The area of the parallelogram is 17.6cm. What is the length of the base
Svetllana [295]

Answer:

hope it helps

area of parallelogram: base × height = 17.6 cm sq

                                  ⇒ 4 × h = 17.6

                                  ⇒ h = 17.6/4

                                  ⇒ h = 4.4 cm

Step-by-step explanation:

7 0
2 years ago
As a salesperson, you are paid $50 per week plus $2 per sale. This week you
deff fn [24]

Answer:25 sales

Step-by-step explanation:

$100 is how much you want to make.

you automatically make $50

100-50=50

if you make $2 per sale then you make the equation 50/2=?

this will give you 25 Sales

5 0
3 years ago
Read 2 more answers
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