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antiseptic1488 [7]
4 years ago
5

Can someone please factor this out for me and explain how you do it? 9x^2+30xy+25y^2

Mathematics
1 answer:
Alexus [3.1K]4 years ago
6 0
So first I split 30xy into two numbers that were divisible by both 9 and 25, and that's how I got 15xy+15xy, after that it's just simple factorisation

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Estimate 12.56+12.69 using front-end estimation.
marissa [1.9K]
<span>12.56+12.69 = 12.60 + 12.70 = 25.30

answer

</span><span>A. about $25.30</span>
5 0
4 years ago
A cube made of an unknown material has a height of 9 cm. The mass of this cube is 3.645 grams. What is the density of this cube?
ehidna [41]

Answer:

density =  \frac{mass}{volume}

mass = 3.645 g

volume = 9×9×9

= 729 cm³

density = 3.645/729

= 0.005 gcm^-3

Step-by-step explanation:

the volume is 729 cm³ cause the given height is 9cm and it is a cube. cube has equal sides so their lengths are the same.

volume = length × height × width

8 0
3 years ago
If x = 8 units, y = 13 units, and h = 11 units, then what is the area of the parallelogram?
kotegsom [21]

Answer:

the area of the parallelogram = base times the height

For the given parallelogram :

x = 8 units, y = 13 units, and h = 11 units

1) If x is the perpendicular to h

So, the base = 8 and the height = 11

So, the area = 8 * 11 = 88 square units

2) If y is the perpendicular to h

So, the base = 13 and the height = 11

So, the area = 13 * 11 = 143 square units

4 0
3 years ago
HELP EDCITEE !! PLEASE !!!
Mariana [72]

Answer:

75.3074525 dgrees

Step-by-step explanation:

law of sines

29/sin(115 degrees) = 13/sin(B)

==> B = 0.418374736 rad

or 75.3074525 dgrees

3 0
3 years ago
A traveler drove 150 miles at 50 miles per hour and then 160 miles at 40 miles per hours .hiw many hours did the driver take alt
Lapatulllka [165]

Answer:

7= hours total

Step-by-step explanation:

150/50= 3

3=miles per hour

160/40= 4

4= miles per hour

4+3=7

7= hours total

4 0
4 years ago
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