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3 years ago

“ I need help with these . I’m trying my best so can u help .

Mathematics

2 answers:

Debora [2.8K]3 years ago

5 0

Can not see it sorry

Sidana [21]3 years ago

4 0

Given : 2(x - 3) + 21 = -3

⇒ 2x - 6 + 21 = -3

⇒ 2x + 15 = -3

⇒ 2x = -3 - 15

⇒ 2x = -18

⇒ x $\bf{= \frac{-18}{2}}$

⇒ x = -9

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#1 #2 #3 & #4 thank you

lubasha [3.4K]

I only (sort of) know 3 and 4

3. Andle 1 is an example of an angle bigger than
${90}^{o} c$
I don't know what you call it.

4. If you have a straight line, both angles (or more) added up need to be
${180}^{o} c$
so if angle 1 is 129, 180-129=51
angle 2 is
${51}^{o} c$

If 1 is what is the relationship between the two angles, then maybe the answer is that they both added up need to be 180 degress (?)

And 2 is probably the same as 3 but with angle 2, angle two is an example of an angle smaller than 90 degrees

6 0

3 years ago

Read 2 more answers

2.4x-9 < 1.8x+6 solve the inequality

nasty-shy [4]

Answer:

x<25

Step-by-step explanation:

Let's solve your inequality step-by-step.

2.4x−9<1.8x+6

Step 1: Subtract 1.8x from both sides.

2.4x−9−1.8x<1.8x+6−1.8x

0.6x−9<6

Step 2: Add 9 to both sides.

0.6x−9+9<6+9

0.6x<15

Step 3: Divide both sides by 0.6

0.6x/0.6 < 15/0.6

x<25

8 0

3 years ago

4/9 divided by what equals 12

NeX [460]

(4/9)/x = 12
(4/9) = 12x
Divide both sides by 12
(1/27) =x

7 0

3 years ago

Read 2 more answers

Michael planted 620 tomato plants in 20 rows. Each row has the same number of tomato plants. Circle each equation that can be us

Natali5045456 [20]

The only answer would be A because if you divide it by 20 it should divide it equally i tried the other ones and they didnt work

8 0

3 years ago

Read 2 more answers

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.

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

8 0

3 years ago