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ludmilkaskok [199]
3 years ago
15

Find the product. (r + s)^2

Mathematics
1 answer:
lana [24]3 years ago
8 0

Answer:

r^2+2rs+s^2

Step-by-step explanation:

If you simplify you get

r^2 + 2rs + s^2

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What is the simplified expression for 2 (x minus 5)?
sp2606 [1]

Answer:

2x-10

Step-by-step explanation:

you have to distribute your parentheses to the 2

5 0
3 years ago
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PLEASE HELP IM SO CONFUSED <br> Which expression gives the volume of a sphere with radius 8?
kumpel [21]
The answer is B :))
im sure
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Hampsphire hill is 87/9 meters tall. Write its height as a mixed number.
Umnica [9.8K]
I think it is 9 6/9 but im not quite sure . 
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Find each measure m&lt;1, m&lt;2,m&lt;3
Leno4ka [110]

Answer:

option 2.

m1 = 75    ,   m2 = 129   ,   m3 = 100

Step-by-step explanation:

with the rule that the internal angles of a triangle add up to 180 ° we can calculate the missing angles

x + 46 + 29 = 180

x = 180 - 46 -29

x = 105

a flat angle has 180 °

m1 + 105 = 180

m1 = 180 - 105

m1 = 75

46 + 54 + y = 180

y = 180 - 46 -54

y = 80

80 = z + 29

z = 80 - 29

z = 51

as they are two crossed lines the angle is reflected from the opposite side

with that principle and knowing that the angle of a turn is 360 °, if we subtract the 2 known angles and divide it by 2 we will obtain the missing angle (m2)

m2 * 2 = 360 - 51 * 2

m2 = 258/2

m2 = 129

m2 = 29 + m3

129 = 29 + m3

m3 = 129 - 29

m3 = 100

4 0
3 years ago
Two airplanes are are 1600 miles apart and heading toward each other at different altitudes. The first plane is traveling north
Elden [556K]

The planes will pass each other in 1.14 hours.

Why?

To solve the problem, we must remember that since both planes are heading toward each other, the speed to the calculations will be their combined speeds.

The speed will be:

Speed=PlaneA+PlaneB\\\\Speed=620mph+780mph=1400mph

Now, calculating the time, we have:

x=v*t\\\\1600mi=1400mph*t\\\\t=\frac{1600mi}{1400mph}=1.14hours

Hence, the planes will pass each other in 1.14 hours.

Have a nice day!

6 0
3 years ago
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