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tekilochka [14]
3 years ago
15

HELPPP!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Xelga [282]3 years ago
3 0
First question : A
2cm×1cm×2+2cm×4cm×2+1cm×4cm×2= 28cm^2
Third question
7x+3(x-2)-4x+8
= 7x+3x-6-4x+8
=7x+3x-4x-6+8
=10x-4x+2
=6x+2
Idon't know the second one but i hope i could still help
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Miss Ortega is purchasing 3.4 pounds of trail mix that cost 4.25 per pound how much change will Miss Ortega receive if she gives
Elena-2011 [213]

Answer:

$5.55

Step-by-step explanation:

4.25 * 3.4 = $14.45

20 - 14.45 = $5.55

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4 years ago
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23x +5y−2, when x=6 and y=3.
zhenek [66]

Answer:

151

Step-by-step explanation:

Plug in 23(6)+5(3)-2

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Solve 153-2

151

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Check all of the correct names for the object pictured below.
gizmo_the_mogwai [7]

Answer:

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Step-by-step explanation:

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3 years ago
The area of a rectangle is 28 square meters. The length is 7meters.
Leviafan [203]

Answer:

width is 4 meters

Step-by-step explanation:

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7 0
3 years ago
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Find BD. NO LINKS ALLOWED PLEASE.<br>​
r-ruslan [8.4K]

Answer:

Step-by-step explanation:

You have an angle bisector in AD. That means the sides are in proportion to to BD and DC

It's much easier just to look at the proportion.

AB / BD = AC/DC

18 / (3x - 3) = 15/(x + 5)              Cross multiply

18*(x + 5) = 15 (3x - 3)                Remove the brackets

18x + 90 = 45x - 45                  Switch the sides.

45x - 45 = 18x + 90                  Subtract 18x from both sides

<u>-18x           -18x</u>

27x - 45 = 90                           Add 45 to both sides

<u>       +45    45</u>

27x = 135

x = 5

But that's not the answer (even though it is correct). You want BD

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BD = 15 - 3

BD = 12

3 0
3 years ago
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