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Lyrx [107]
3 years ago
11

Guys i'm really dumb, please help me, thank you

Mathematics
2 answers:
MrRa [10]3 years ago
6 0
It’s the first choice because of the mm
melisa1 [442]3 years ago
4 0

Answer:

44cm^2

Step-by-step explanation:

(a+b)h/2

=(9+13)4/2

=22x4/2

=88/2

=44

The Area is 44 cm^2, so it's the first choice.

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2 (r - 3) - 5(r + 2)
DochEvi [55]

Answer:

-3r -16

Step-by-step explanation:

2 (r - 3) - 5(r + 2)

Distribute

2r-6 - 5r - 10

Combine like terms

-3r -16

3 0
3 years ago
Fast-Food Delight is open
LekaFEV [45]

Answer:

10.30p.m - 6.00a.m = 4.30

11.00p.m - 6.00a.m = 5.00

11.00p.m - 7.00a.m = 4.00

4.30 + 5.00 + 4.00 = 13.30

or you could do

4.30 + 4.00 = 8.30

8.30 + 5.00 = 13.30

13.30 = 1.30

I don't know if this is right, but i tried my best to help.

4 0
4 years ago
A rocket is launched vertically from the ground with an initial velocity of 64 ft/sec.
diamong [38]

we know the rocket was launched from the ground, meaning its initial height is 0, thus

~~~~~~\textit{initial velocity in feet} \\\\ h(t) = -16t^2+v_ot+h_o \quad \begin{cases} v_o=\textit{initial velocity}&64\\ \qquad \textit{of the object}\\ h_o=\textit{initial height}&0\\ \qquad \textit{of the object}\\ h=\textit{object's height}&\\ \qquad \textit{at "t" seconds} \end{cases} \\\\\\ h(t)=-16t^2+64t+0\implies h(t)=-16t^2+64t

Check the picture below.

3 0
2 years ago
How do you solve this
lys-0071 [83]
2x^2 + 14x = -12

Step 1: Subtract -12 from both sides.

2x^2 + 14x - (-12) = -12 - (-12)

2x^2 + 14x + 12 = 0

Step 2: Factor the left side of the equation.

2(x + 1)(x + 6) = 0

Step 3: Set Factors equal to 0.

x + 1 = 0 or x + 6 = 0

x = -1 or x = -6

Answer:
x = -1 or x = -6

Hope this helps. : )
5 0
4 years ago
Help with this question please
Veronika [31]

Answer:

I don't normally really really really really really really really really

3 0
3 years ago
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