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g100num [7]
3 years ago
6

Please can someone help me? −12(7z+4)+15(5z−15)

Mathematics
2 answers:
Vinvika [58]3 years ago
6 0

Step-by-step explanation:

ghofuikgcjjivbiucbkhfkhcuvijnochm

marin [14]3 years ago
4 0
The answer should be -9x - 273. Which should be the same as x= 30.3
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Help me with this ASAP
adelina 88 [10]

Answer:

2 to the power of 2 times three to the power of 2

3 to the power of 2 times 5 to the power of 2

6 to the power of 2 times 7 to the power of 3

7 to the power of 2 times 5 to the power of 3

3 to the power of 2 times 5 to the power 2 times 7 to the power of 2

Step-by-step explanation:

4 0
2 years ago
Substitute x with (-2) and y with (-4)<br> Simplify: 5(41 - x) + {-7(y + x)} =
Gnesinka [82]

Answer:

257

Step-by-step explanation:

5(41-(-2))+{-7(-4-2)}

5(41+2)+{-7(-6)}

5(43)+(42)

215+42

257

4 0
3 years ago
Read 2 more answers
ine segment MN has endpoints M(-5,4) and N(1,-2). Find the equation for the perpendicular bisector of line segment MN.
Gre4nikov [31]

Answer:

y=x-3

Step-by-step explanation:

slope=4+2/-5-1=-1

perpendicular slope= negative reciprical=1

y=x+b

midpoint on perpendicular bisector= (-5+1/2, 4-2/2)=(-2,1)

substitution-2=1+b, b=-3

y=x-3

4 0
3 years ago
Consider an airplane heading due east at 150 miles/hour relative to the air. The wind is blowing at 7.1 miles/hour at 45º south
sergij07 [2.7K]

We have

<span>Va(airplane)=150  East</span>

Vw(wind)=7.1 South East

<span>
</span><span>resulting vector R</span>

airplane

Vax=150    Vay=0   it only has component x 


Wind
Vwx=7.1*cos45=5.02

Vwy=7.1*sin45=-5.02 is negative because is South direction

 |R|=(Rx^2+Ry^2) ^0.5

Rx=150+5.02=155.02

Ry=0-5.02=-5.02

<span>|R|=155.10 miles/hour South East</span>

Determine angle θ

Rx=R*cos(θ)

<span>Cos(θ)=Rx/R</span> <span>Cos(θ)=155.02/155.10=0.9995</span>

 θ =arc cos Rx/R θ =1.8119 º

 Rx represents the component in the East direction of the resultant force. Your contribution is given by both, the force of the plane and the wind. The contribution of the wind makes the airplane's speed greater

 Ry represents the component in the South direction of the resulting force Its contribution is exclusive of the wind since the airplane has no component in this direction

 |R| the force resulting from the combined action of the force of the plane and the force of the wind

 θ represents the angle that forms the resultant force with respect to the x axis or east direction

5 0
2 years ago
Read 2 more answers
Find the area of Pentagon ABCDE in which BL perpendicular to AC, CM perpendicular to AD, EN perpendicular to AD such that AC = 8
deff fn [24]

Answer:

Area ABCDE = 82 cm²

Step-by-step explanation:

ABCDE = ΔEAD + ΔDAC + ΔCAB

ABCDE = (12×5)/2 + (12×6)/2 + (8×4)/2 = 30+36+16 = 82

6 0
2 years ago
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